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单选题
Why do some people get sick after drinking the water from the river?
A
Because the river is polluted
B
Because the river makes the earth more beautiful
C
Because the river can only offer water to animals
D
Because there are too many animals and plants in the river
参考答案
参考解析
解析：
题目问的是“为什么一些人在喝了河水之后生病了”，由The river的描述可知，树很难过，因为人类向河水中排放废物，这些废物杀死了许多喝我的河水的动物和植物。一些人喝了这种水也生病了，因此答案为A项，意思是“因为河流受到了污染”。
题目问的是“为什么一些人在喝了河水之后生病了”，由The river的描述可知，树很难过，因为人类向河水中排放废物，这些废物杀死了许多喝我的河水的动物和植物。一些人喝了这种水也生病了，因此答案为A项，意思是“因为河流受到了污染”。
更多 “单选题Why do some people get sick after drinking the water from the river?A Because the river is pollutedB Because the river makes the earth more beautifulC Because the river can only offer water to animalsD Because there are too many animals and plants in the river” 相关考题
考题
Water is the __46___ of all the things we eat and drink . Not many people understand this but __47____ quite true . The human body can go without ___48___ for a long time . We’ve got many examples for this . Yet two __49___ three days without water can usually make people __50____ . Man can’t live __51____ water .Many people don’t understand how ___52__ water the human body needs __53___ work well , and many people , especially young people , do not drink enough , ___54__ in very hot weather . Our body has mostly water , about 65% to 75% . That is to say about two thirds of our body is water . When we do sports , some of the water will get away from our body . __55 _ we don’t drink some water , we won’t have enough water． And if we don’t have enough water , we’ll feel tired and many of us will get ill . So you know how important water is to us .46.___________( )46. A. importantB. most importantC. more importantD. different
考题
What effect does excessive positive ions have on some people?A．They think they are mad.B．They feel very tired.C．They become violently sick.D．They are too tired to do anything.
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Why does the woman plan to go to town?A．To pay her bills in the bank.B．To buy books in a bookstore.C．To get some money from the bank,
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BThe world is not only hungry，it is also thirsty for water． this may seem strange to you，since nearly 75% of the earth is covered with water． But about 97% of this water is sea water．Man can only drink and use the other 3% fresh water that comes from rivers，lakes，under-ground and other places． And we cannot even use all of that，because some of this fresh water has been made dirty．At the moment，this small amount(数量) of fresh water is still enough for us． However，our need for water is getting greater and greater． Only if we take steps to solve this problem now，we can get away from a serious world water shortage later on． The people of the world cannot have an enjoyable life without enough clean water．On one hand we should stop wasting this little water of ours，on the other hand we should find ways to reuse it，but this has not been done widely．Today，in most large cities，water is used only once and it then returns to the sea or runs into underground places．lf we can make it clean again，it can be used once more just as if it were fresh from a spring．But even if large cities reuse its water，we still would not have enough in the future． Where．could we turn to next for water? To the ocean! How can we do to make use of this great a-mount of sea water? We can take the salt from the water to make it fresh．So if we take all these steps，we'll be in no danger of drying up!( )26． Why does the writer say that the world is thirsty for water?A． The amount of fresh water is really very small．B． The people of the world waste too much water．C． The people of the world have to drink a lot of water every day．D． There are too many people in the world needing water．
考题
Why does the woman plan to go to town？A To pay her bills in the bank. B To buy books in a bookstore. C To get some money from te bank.
考题
CFood sometimes gets poisoned with harmful things. A person who eats such food can get an illness called food poisoning. Food poisoning is usually not serious, but some types are deadly. The symptoms of food poisoning usually begin within hours of eating the poisoned food. Fever is one of the most common symptoms.Certain microorganisms（微生物）cause most types of food poisoning. Bacteria and other microorganisms can poison eggs, meat, vegetables, and many other foods. After entering the body, these tiny living things release（释放）poisons that make people sick.Some chemicals can also cause food poisoning. They are often added to food while it is being grown, processed, or prepared. For example, many farmers spray chemicals on crops to kill weeds and insects. Some people may have a bad reaction to those chemicals when they eat the crops.Some plants and animals contain natural poisons that are harmful to people. These include certain kinds of seafood, grains, nuts, seeds, beans, and mushrooms.When people handle food properly, the risk of food poisoning is very small. Microorganisms multiply rapidly in dirty places and in warm temperatures. This means that people should never touch food with dirty hands or put food on unwashed surfaces. Food should be kept in a refrigerator to stop microorganisms from growing. Meat needs to be cooked thoroughly to kill any dangerous microorganisms. People should also wash food covered with chemicals before eating it. Finally, people should not eat wild mushrooms or other foods that grow in the wild. Some of these foods may contain natural materials that are poisonous to humans. In addition, some types of fish can be poisonous.Most people recover from food poisoning after a few days of resting and drinking extra water. If people eat natural poisons, they must go to the hospital right away to have their stomachs emptied.51. Which of the following statements is NOT true?A. Food when poisoned can make people sick.B. Food poisoning means death.C. Food poisoning comes in varieties.D. Food poisoning can be serious.
考题
Why do workaholics enjoy their jobs so much?A、It provides people with paychecks.B、It offers more than financial security.C、It provides people with self-confidence.D、People can get a feeling of satisfaction.
考题
Why do some people oppose cloning?()
A.It is not perfectB.It is against our traditional ethics and moralityC.It is against the natural lawD.It may devaluate real life
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Tiny InvadersThe human body is truly amazing. It allows us to sense the world around us,to do work and have fun, and to move from place to place.In fact,the human body does its work so well that most people don't think about it very much-until they get sick.The germs（致病菌）that make people sick are everywhere. You can ' t see them , but they ' re there. They're sitting on your desk.They're hiding on your computer's keyboard.They're even in the air that you are breathing. There are two types of germs : viruses and bacteria（细菌）.Viruses are germs that can only live inside animals or plants. Viruses cause illnesses such as flu and measles（麻疹）.Bacteria are tiny creatures.Some bacteria are good.They can help your stomach break down food.Other bacteria aren't so good. They can make you sick. Bacteria can cause sore throats（喉痛）and ear infections.How can you stop these tiny invaders from making you sick?Your skin is the first defense against germs.You can prevent some illnesses simply by washing,with soap and water. But germs can still enter the body through small cuts in the skin or through the mouth,eyes,and nose.Once germs are inside your body , your immune（免疫的）system tries to protect you. It looks for and destroys germs.How does it do that?Special cells patrol your body.Some of these cells actually eat germs! Other cells make antibodies.An antibody sticks to a germ.There is a different antibody for each kind ofgerm.Some antibodies keep germs from making you sick.Others help your body find and kill germs.After agerm is destroyed,the antibodies stay in your body.They protect you if the same kind of germ comes back. That way you will not get the same illness twice.You can keep your body healthy by eating a nutritious（有营养的）diet to make your immune systerm strong. You can also help your immune system fight germs by getting vaccinated（接种）.Vaccines are medicines.They contain germs that have been killed or weakened.The dead germs can't make you sick. Instead,they cause your body to make antibodies.If the same germ ever shows up again,then yourantibodies attack it.The heart contains the body's strongest muscle.A:RightB:WrongC:Not mentioned
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Alcoholism1 .Yes,alcoholism can be treated. Alcoholism treatment programs use both counseling and medication（药物治疗）to help a person stop drinking. Most alcoholics need help to recover from their disease. With support and treatment,many people are able to stop drinking and rebuild their lives.2. A range of medication is used to treat alcoholism. Benzodiazepines（苯二氮平类药物） are sometimes used during the first days after a person stops drinking to help him or her safely withdraw from alcohol. However,these medications are not used beyond the first few days because they may be highly addictive. Other medications help people remain sober（清醒）. One medication used for this purpose is naltrexone（环丙甲经二经吗啡酮) . When combined with counseling,naltrexone can reduce the strong desire for alcohol and help prevent a person from returning to heavy drinking. Another medication, disulfiram（戒酒硫）,discourages drinking by making the person feel sick if he or she drinks alcohol. Though several medications help treat alcoholism,there is no“magic bullet”.Developing new and more effective medications to treat alcoholism remains a high priority for researchers.3 .Alcoholism treatment works for many people. But just like any chronic disease,there are different levels of success in treatment.Some people stop drinking and remain sober. Others cannot stop drinking for any length of time. With treatment,one thing is clear,however,the longer a person stops drinking alcohol,the more likely he or she will be able to stay sober.4 .No,alcoholism cannot be cured at this time. Even if an alcoholic hasn't been drinking for a long time,he or she can still return to the drinking habit.To guard against it,an alcoholic must continue to avoid all alcoholic drinks.Medication can help some people______.A: stay confusedB: alcoholic drinksC: medical treatmentD: feel sickE: in every personF: stop drinking
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Tiny InvadersThe human body is truly amazing. It allows us to sense the world around us,to do work and have fun, and to move from place to place.In fact,the human body does its work so well that most people don't think about it very much-until they get sick.The germs（致病菌）that make people sick are everywhere. You can ' t see them , but they ' re there. They're sitting on your desk.They're hiding on your computer's keyboard.They're even in the air that you are breathing. There are two types of germs : viruses and bacteria（细菌）.Viruses are germs that can only live inside animals or plants. Viruses cause illnesses such as flu and measles（麻疹）.Bacteria are tiny creatures.Some bacteria are good.They can help your stomach break down food.Other bacteria aren't so good. They can make you sick. Bacteria can cause sore throats（喉痛）and ear infections.How can you stop these tiny invaders from making you sick?Your skin is the first defense against germs.You can prevent some illnesses simply by washing,with soap and water. But germs can still enter the body through small cuts in the skin or through the mouth,eyes,and nose.Once germs are inside your body , your immune（免疫的）system tries to protect you. It looks for and destroys germs.How does it do that?Special cells patrol your body.Some of these cells actually eat germs! Other cells make antibodies.An antibody sticks to a germ.There is a different antibody for each kind ofgerm.Some antibodies keep germs from making you sick.Others help your body find and kill germs.After agerm is destroyed,the antibodies stay in your body.They protect you if the same kind of germ comes back. That way you will not get the same illness twice.You can keep your body healthy by eating a nutritious（有营养的）diet to make your immune systerm strong. You can also help your immune system fight germs by getting vaccinated（接种）.Vaccines are medicines.They contain germs that have been killed or weakened.The dead germs can't make you sick. Instead,they cause your body to make antibodies.If the same germ ever shows up again,then yourantibodies attack it.Washing your skin can prevent some illnesses.A:RightB:WrongC:Not mentioned
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Tiny InvadersThe human body is truly amazing. It allows us to sense the world around us,to do work and have fun, and to move from place to place.In fact,the human body does its work so well that most people don't think about it very much-until they get sick.The germs（致病菌）that make people sick are everywhere. You can ' t see them , but they ' re there. They're sitting on your desk.They're hiding on your computer's keyboard.They're even in the air that you are breathing. There are two types of germs : viruses and bacteria（细菌）.Viruses are germs that can only live inside animals or plants. Viruses cause illnesses such as flu and measles（麻疹）.Bacteria are tiny creatures.Some bacteria are good.They can help your stomach break down food.Other bacteria aren't so good. They can make you sick. Bacteria can cause sore throats（喉痛）and ear infections.How can you stop these tiny invaders from making you sick?Your skin is the first defense against germs.You can prevent some illnesses simply by washing,with soap and water. But germs can still enter the body through small cuts in the skin or through the mouth,eyes,and nose.Once germs are inside your body , your immune（免疫的）system tries to protect you. It looks for and destroys germs.How does it do that?Special cells patrol your body.Some of these cells actually eat germs! Other cells make antibodies.An antibody sticks to a germ.There is a different antibody for each kind ofgerm.Some antibodies keep germs from making you sick.Others help your body find and kill germs.After agerm is destroyed,the antibodies stay in your body.They protect you if the same kind of germ comes back. That way you will not get the same illness twice.You can keep your body healthy by eating a nutritious（有营养的）diet to make your immune systerm strong. You can also help your immune system fight germs by getting vaccinated（接种）.Vaccines are medicines.They contain germs that have been killed or weakened.The dead germs can't make you sick. Instead,they cause your body to make antibodies.If the same germ ever shows up again,then yourantibodies attack it.Vaccines can make you sick.A:RightB:WrongC:Not mentioned
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Tiny InvadersThe human body is truly amazing. It allows us to sense the world around us,to do work and have fun, and to move from place to place.In fact,the human body does its work so well that most people don't think about it very much-until they get sick.The germs（致病菌）that make people sick are everywhere. You can ' t see them , but they ' re there. They're sitting on your desk.They're hiding on your computer's keyboard.They're even in the air that you are breathing. There are two types of germs : viruses and bacteria（细菌）.Viruses are germs that can only live inside animals or plants. Viruses cause illnesses such as flu and measles（麻疹）.Bacteria are tiny creatures.Some bacteria are good.They can help your stomach break down food.Other bacteria aren't so good. They can make you sick. Bacteria can cause sore throats（喉痛）and ear infections.How can you stop these tiny invaders from making you sick?Your skin is the first defense against germs.You can prevent some illnesses simply by washing,with soap and water. But germs can still enter the body through small cuts in the skin or through the mouth,eyes,and nose.Once germs are inside your body , your immune（免疫的）system tries to protect you. It looks for and destroys germs.How does it do that?Special cells patrol your body.Some of these cells actually eat germs! Other cells make antibodies.An antibody sticks to a germ.There is a different antibody for each kind ofgerm.Some antibodies keep germs from making you sick.Others help your body find and kill germs.After agerm is destroyed,the antibodies stay in your body.They protect you if the same kind of germ comes back. That way you will not get the same illness twice.You can keep your body healthy by eating a nutritious（有营养的）diet to make your immune systerm strong. You can also help your immune system fight germs by getting vaccinated（接种）.Vaccines are medicines.They contain germs that have been killed or weakened.The dead germs can't make you sick. Instead,they cause your body to make antibodies.If the same germ ever shows up again,then yourantibodies attack it.Viruses can only live inside people or animals.A:RightB:WrongC:Not mentioned
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Tiny InvadersThe human body is truly amazing. It allows us to sense the world around us,to do work and have fun, and to move from place to place.In fact,the human body does its work so well that most people don't think about it very much-until they get sick.The germs（致病菌）that make people sick are everywhere. You can ' t see them , but they ' re there. They're sitting on your desk.They're hiding on your computer's keyboard.They're even in the air that you are breathing. There are two types of germs : viruses and bacteria（细菌）.Viruses are germs that can only live inside animals or plants. Viruses cause illnesses such as flu and measles（麻疹）.Bacteria are tiny creatures.Some bacteria are good.They can help your stomach break down food.Other bacteria aren't so good. They can make you sick. Bacteria can cause sore throats（喉痛）and ear infections.How can you stop these tiny invaders from making you sick?Your skin is the first defense against germs.You can prevent some illnesses simply by washing,with soap and water. But germs can still enter the body through small cuts in the skin or through the mouth,eyes,and nose.Once germs are inside your body , your immune（免疫的）system tries to protect you. It looks for and destroys germs.How does it do that?Special cells patrol your body.Some of these cells actually eat germs! Other cells make antibodies.An antibody sticks to a germ.There is a different antibody for each kind ofgerm.Some antibodies keep germs from making you sick.Others help your body find and kill germs.After agerm is destroyed,the antibodies stay in your body.They protect you if the same kind of germ comes back. That way you will not get the same illness twice.You can keep your body healthy by eating a nutritious（有营养的）diet to make your immune systerm strong. You can also help your immune system fight germs by getting vaccinated（接种）.Vaccines are medicines.They contain germs that have been killed or weakened.The dead germs can't make you sick. Instead,they cause your body to make antibodies.If the same germ ever shows up again,then yourantibodies attack it.After they kill germs,antibodies stay in the body.A:RightB:WrongC:Not mentioned
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Some doctors think that you should drink a glass of water each morning. You should drink water before doing anything else.The temperature of the water should be similar to body temperature:not hot,not cold.Why should you drink this water?______(46).It helps clean out your kidneys.It prepares your stomach for digestion.______(47).After drinking water,the intestines can more easily take out nutrients from our food. And water helps us go to the bathroom more easily.Scientists suggest that people take in 1,600 milliliters of water each day.______(48).If you do,your kidneys will have to work much harder to eliminate it. It's better to drink some in morning and some in afternoon.______(49).And during meals,they think water dilutes the juices produced in our stomachs.This can interfere with normal digestion.Are you drinking enough water every day?Check the color of your urine.______(50).if your urine is very dark yellow,your probably need to drink more water. A little water each day could make you much healthier._________（47）A:If it is light yellow,you are probably drinking enoughB:Water can also help your intestines work betterC:Some people think it's better to drink between mealsD:Water helps your body in many waysE:But don't drink all of that water in one sitting F: Water is an essential element of life
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WaterEarth is like a big blue marble.From high above the Earth and from the moon,the planet gleams and shines.The blue water in the oceans and seas of the Earth makes a dramatic image.The white clouds above the Earth add beauty to the picture.Water is the source of this beauty and the source of life on Earth.It is the reason people can live on this planet. Water is everywhere.(46)_______.It is in the soil,the ground that grows the food.Water is in rock deep under the ground, in natural holding areas一in storage.In a real sense,water keeps Earth alive.Nature has an unchanging amount of water. Nature has a perfect system for recycling water. (47)_____.It falls as rain.Then it goes to one of three places.It might sink slowly through the soil into the natural holding areas in the rock.(48)_______一by becoming vapor,or gas.It might run off into streams,rivers and oceans.By itself,nature can keep the balance and provide plenty of clean water for us.Nature recycles water.However,people cause problems for this natural recycling system.Nature's recycling system can work well(49)________.Some ways that people upset nature are easy to understand.For example, dirty sewage（污水沟系统）water from homes and factories must not mix with drinking water. People get sick from drinking contaminated water. Sometimes water from factories goes into streams and rivers.It enters into the groundwater. It can flow into lakes too.This kind of contamination from industry(waste water from factories) can be dangerous for people.If water contains poisons and chemicals,it is poison.(50)________;some poisons kill people as well as birds and animals.Without knowing,people can upset nature's recycling system.Lakes and rivers add beauty to the world. People enjoy water for entertainment purposes,too. People enjoy swimming and playing in the cool water of a lake in the summer. They like to ride on boats on rivers.Many people enjoy catching fish in the rivers.They fish for food and for sport.However,in some places,the water of the lakes and rivers is no longer safe.These rivers and lakes are contaminated.The fish are dying because of the chemicals from farms and factories.People cannot swim in the polluted water._________（49）A:Poison makes people sickB:It is in the air that people breatheC:We can not live without waterD:Water is used again and againE:only if people work with the system and not against it F: It might disappear into the air quickly
考题
A.lot of people could fall ill after drinking contaminated water.A:muddled B:polluted C:mixed D:troubled
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A lot of people could fall ill after drinking contaminated water.A:muddled B:polluted C:mixed D:troubled
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Motion SicknessLiving in space looks like lots of fun.You can do certain things in space(like floating around,or pushing huge objects)that you cannot do on earth.But being in space can do things to you,too.If you stay too long in a gravity-free environment,your bones could become weak,and a small spaceship just might annoy you after a while,because space travel could make you seasick!On July 4, 1982,after seven days orbiting the earth,astronauts Thomas K. Mattingly and Henry W. Hartsfield returned home.Although not all of the experiments on board worked properly,the flight basically seemed to be a success except for one"little"thing: early in the flight,astronaut Hartsfield became"seasick".Thomas Mattingly,who is also a jet pilot and is highly resistant to motion sickness on earth,did much better.Mattingly sailed through space with a steady stomach.But no one knows why Hartsfield felt uneasy and Mattingly did not.So far it seems there is no reliable way to predict who will become motion sick in outer space and who will not.In all,at least four astronauts have suffered from space motion sickness. Russian and American scientists are working together to try to understand and solve the motion sickness.Space program officials worry that if so many highly-trained pilots get sick in space,what will happen when civilians start flying in the shuttle?Motion sickness is a disagreeable feeling that comes from the pitching,rolling, swaying,or just the moving of the object you are riding in or on.Symptoms of motion sickness include:dizziness,headache,a sinking feeling in the stomach,and vomiting （呕吐）.Why does motion make some people ill?Doctors believe that motion sickness is caused by a disturbance in the inner ear.Our ears do more than give us hearing.A part of the ears gives us a sense of balance and helps make us aware of whether we are right side up or upside down.If you know that you get carsick or seasick,what can you do?Speak to your doctor. There are certain medicines available that can help stop that uneasy feeling.But many of them can also make you sleepy.Usually they work best takenbefore you begin feeling ill.Some people also recommend water,ice cubes,mints,or plain toast.But these remedies do not always work for everyone.Perhaps,since motion sickness is such a big problem in outer space,researchers may soon find a way to cure the astronauts一and those of us who stay on earth.The motion sickness some astronauts suffered from during space travel had been caused by the defective digestive system.A:Right B:Wrong C:Not mentioned
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Motion SicknessLiving in space looks like lots of fun.You can do certain things in space(like floating around,or pushing huge objects)that you cannot do on earth.But being in space can do things to you,too.If you stay too long in a gravity-free environment,your bones could become weak,and a small spaceship just might annoy you after a while,because space travel could make you seasick!On July 4, 1982,after seven days orbiting the earth,astronauts Thomas K. Mattingly and Henry W. Hartsfield returned home.Although not all of the experiments on board worked properly,the flight basically seemed to be a success except for one"little"thing: early in the flight,astronaut Hartsfield became"seasick".Thomas Mattingly,who is also a jet pilot and is highly resistant to motion sickness on earth,did much better.Mattingly sailed through space with a steady stomach.But no one knows why Hartsfield felt uneasy and Mattingly did not.So far it seems there is no reliable way to predict who will become motion sick in outer space and who will not.In all,at least four astronauts have suffered from space motion sickness. Russian and American scientists are working together to try to understand and solve the motion sickness.Space program officials worry that if so many highly-trained pilots get sick in space,what will happen when civilians start flying in the shuttle?Motion sickness is a disagreeable feeling that comes from the pitching,rolling, swaying,or just the moving of the object you are riding in or on.Symptoms of motion sickness include:dizziness,headache,a sinking feeling in the stomach,and vomiting （呕吐）.Why does motion make some people ill?Doctors believe that motion sickness is caused by a disturbance in the inner ear.Our ears do more than give us hearing.A part of the ears gives us a sense of balance and helps make us aware of whether we are right side up or upside down.If you know that you get carsick or seasick,what can you do?Speak to your doctor. There are certain medicines available that can help stop that uneasy feeling.But many of them can also make you sleepy.Usually they work best takenbefore you begin feeling ill.Some people also recommend water,ice cubes,mints,or plain toast.But these remedies do not always work for everyone.Perhaps,since motion sickness is such a big problem in outer space,researchers may soon find a way to cure the astronauts一and those of us who stay on earth.People suffering from motion sickness during space travel can alleviate its symptoms by eating or drinking something.A:Right B:Wrong C:Not mentioned
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第一篇Food PoisoningFood sometimes gets poisoned with harmful things,A person who eats such food can get an illness called food poisoning. Food poisoning is usually not serious,but some types are deadly.The symptoms of food poi- soning usually begin within hours of eating the poisoned food.Fever is one of the most common symptoms.Certain microorganisms（微生物）cause most types of food poisoning. Bacteria and other microorganisms can poison eggs,meat,vegetables,and many other foods.After entering the body,these tiny living things re- lease（释放）poisons that make people sick.Some chemicals can also cause food poisoning. They are often added to food while it is being grown,pro- cessed,or prepared.For example,many farmers spray chemicals on crops to kill weeds and insects.Some people may have a bad reaction to those chemical、when they eat the crops.Some plants and animals contain natural poisons that are harmful to people.These includo certain kinds of seafood,grains,nuts,seeds,beans,and mushrooms.When people handle food properly,the risk of food poisoning is very small.Microorganisms multiply rapidly in dirty places and in warm temperatures.This means that people should never touch food with dirty hands or put food on unwashed surfaces.Food should be kept in a refrigerator to stop microorganisms from growing, Meat needs to be cooked thoroughly to kill any dangerous microorganisms. People should also wash food covered with chemicals before eating it.Finally,people should not eat wild mushrooms or other foods that grow in the wild.Some of these foods may contain natural materials that are poisonous to humans.In addition,some types of fish can be poisonous.Most people recover from food poisoning after a few days of resting and drinking extra water. If people eat natural poisons,they must go to the hospital right away to have their stomachs emptied. From Paragraph 5,we can learn that_______________.A:mushrooms should not he eatenB:vegetables are safer than meat and seafoodC:natural poisons are more dangerous than chemicalsD:different types of food should he handled differently
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第一篇Food PoisoningFood sometimes gets poisoned with harmful things,A person who eats such food can get an illness called food poisoning. Food poisoning is usually not serious,but some types are deadly.The symptoms of food poi- soning usually begin within hours of eating the poisoned food.Fever is one of the most common symptoms.Certain microorganisms（微生物）cause most types of food poisoning. Bacteria and other microorganisms can poison eggs,meat,vegetables,and many other foods.After entering the body,these tiny living things re- lease（释放）poisons that make people sick.Some chemicals can also cause food poisoning. They are often added to food while it is being grown,pro- cessed,or prepared.For example,many farmers spray chemicals on crops to kill weeds and insects.Some people may have a bad reaction to those chemical、when they eat the crops.Some plants and animals contain natural poisons that are harmful to people.These includo certain kinds of seafood,grains,nuts,seeds,beans,and mushrooms.When people handle food properly,the risk of food poisoning is very small.Microorganisms multiply rapidly in dirty places and in warm temperatures.This means that people should never touch food with dirty hands or put food on unwashed surfaces.Food should be kept in a refrigerator to stop microorganisms from growing, Meat needs to be cooked thoroughly to kill any dangerous microorganisms. People should also wash food covered with chemicals before eating it.Finally,people should not eat wild mushrooms or other foods that grow in the wild.Some of these foods may contain natural materials that are poisonous to humans.In addition,some types of fish can be poisonous.Most people recover from food poisoning after a few days of resting and drinking extra water. If people eat natural poisons,they must go to the hospital right away to have their stomachs emptied. A:are always accompanied by a fever B:are too common to be notedC:can be noticed within hoursD:can he ignored
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第一篇Food PoisoningFood sometimes gets poisoned with harmful things,A person who eats such food can get an illness called food poisoning. Food poisoning is usually not serious,but some types are deadly.The symptoms of food poi- soning usually begin within hours of eating the poisoned food.Fever is one of the most common symptoms.Certain microorganisms（微生物）cause most types of food poisoning. Bacteria and other microorganisms can poison eggs,meat,vegetables,and many other foods.After entering the body,these tiny living things re- lease（释放）poisons that make people sick.Some chemicals can also cause food poisoning. They are often added to food while it is being grown,pro- cessed,or prepared.For example,many farmers spray chemicals on crops to kill weeds and insects.Some people may have a bad reaction to those chemical、when they eat the crops.Some plants and animals contain natural poisons that are harmful to people.These includo certain kinds of seafood,grains,nuts,seeds,beans,and mushrooms.When people handle food properly,the risk of food poisoning is very small.Microorganisms multiply rapidly in dirty places and in warm temperatures.This means that people should never touch food with dirty hands or put food on unwashed surfaces.Food should be kept in a refrigerator to stop microorganisms from growing, Meat needs to be cooked thoroughly to kill any dangerous microorganisms. People should also wash food covered with chemicals before eating it.Finally,people should not eat wild mushrooms or other foods that grow in the wild.Some of these foods may contain natural materials that are poisonous to humans.In addition,some types of fish can be poisonous.Most people recover from food poisoning after a few days of resting and drinking extra water. If people eat natural poisons,they must go to the hospital right away to have their stomachs emptied. Food poisoning can be caused by all of the following EXCEPT_______________.A:some chemicalsB:low temperaturesC:some tiny living thingsD:certain natural materials
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问答题◆Topic 6: Is International Tourism an Effective Bridge of Different Nations? Questions for Reference: 1. Why do you think people like to take an international tourism? 2. What kind of situation are the travelers most likely to be faced with when they get on an international tourism? 3. The international tourism does not promote understanding between people from different cultures. Do you agree?
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单选题When oil is accidentally discharged into the water，what should you do after reporting the discharge（）.A
Contain the oil and remove as much of it as possible from the waterB
Throw chemical agents on the water to disperse the oilC
Throw sand on the water to sink the oilD
Obtain your permit from the Corps of Engineers
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