网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
问答题
Directions: Suppose you are Li Ming, and you are not satisfied with the service in your library, such as the books not arranged in serial orders, librarians’ bad service and the noise in the reading- room. Write a letter to President of your university to make a complaint and give suggestions at the same time. You should write about 120 words. You do not need to write the address. Now write the letter on the Answer Sheet.
参考答案
参考解析
解析：
暂无解析
更多 “问答题Directions: Suppose you are Li Ming, and you are not satisfied with the service in your library, such as the books not arranged in serial orders, librarians’ bad service and the noise in the reading- room. Write a letter to President of your university to make a complaint and give suggestions at the same time. You should write about 120 words. You do not need to write the address. Now write the letter on the Answer Sheet.” 相关考题
考题
单选题M: Would you like to come to a concert on Friday? W: ______, but I’m busy that evening.A
It’s hard to sayB
Well, I’d love toC
Yes, I likeD
Good! I’ll think
考题
问答题In this section, there is one passage followed by a summary. Read the passage carefully and complete the summery below by choosing a maximum of three words from the passage to fill in each of the blanks 51-5.Remember to write the answers on the answer sheet. Malnutrition during weaning age—when breast milk is being replaced by semi-solid foods—is highly prevalent in children of poor households in many developing countries. While the etiology is complex and multifactorial, the immediate causes are recognized as feeding at less than adequate levels for child growth and development, and recurrent infections, including diarrhoea, resulting mainly from ingestion of contaminated foods. As a result, many young children, particularly between six months to two years of age, experience weight loss and impaired growth and development. Two such answers have arisen. Firstly, cereal fermentation is used for reducing the risk of contamination under the existing inappropriate conditions for food preparation and storage in many households. Secondly, a tiny amount of sprouted grains flour is used in preparation of weaning foods as a magic way to lessen the viscosity without decreasing energy density. A method to eliminate pathogenic bacteria and inhibit their growth during storage of weaning preparations can benefit nutrition and health in young children considerably. Use of fermented foods for feeding children of weaning age appears to be an effective solution. Fermented foods have lower levels of diarrhoeal germ contamination, they are suitable for child feeding, and can be safely stored for much longer periods of time than fresh foods. The practice has been a traditional way of food preservation in many parts of the world. The antimicrobial properties of fermented foods and their relative higher safety-documented since the early 1900’s—have been indicated in a number of studies. What are the underlying mechanisms by which fermentation processes help to prevent or reduce contamination? A possible answer suggests that during the fermentation process foods become more acid. This explains why diarrhoea-causing bacteria are not able to grow in fermented foods as rapidly as in unfermented ones. It is also hypothesized that some of the germs present in the foods are killed or inhibited from growing through the action of antimicrobial substances produced during fermentation (Dialogue on Diarrhoea, 1990). The fermented foods can, therefore, be kept for a longer time compared to fresh ones. It has been shown that while contamination levels in cooked unfermented foods increase with storage time, fermented foods remain less contaminated. Whatever the underlying mechanisms, the fact is that the exercise reduces contamination without adding to the household cost both in terms of time and money. Its preparation is easy. The cereal flour is mixed with water to form a dough which is left to be fermented; addition of yeast, or mixing with a small portion of previously fermented dough is sometimes needed. The dough can then be cooked into porridge for feeding to the child. Summary: Malnutrition and the resulting impaired growth and development in children of weaning age in developing countries results not only from (1) but also from infections caused by contaminated food. Studies have addressed the problem of inadequate intake by using sprouted grains in food preparation. Contamination has been tackled with (2) Both of these methods are, or were, used traditionally and are practical and inexpensive.Fermented foods have higher (3) , and also have antimicrobial qualities. This means that contamination is decreased and that their (4) is increased. Fermentation occurs when (5) is left to stand, occasionally with simple additives.
考题
问答题There is one passage in this section with 5 statements. Go over the passage quickly and answer the questions on the Answer Sheet. For questions 1-5, mark Y (for YES) if the statement agrees with the information given in the passage; N (for NO) if the statement contradicts the information given in the passage; NG (for NOT GIVEN) if the information is not given in the passage. When was the last time you saw a frog? Chances are, if you live in a city, you have not seen one for some time. Even in wet areas once teeming with frogs and toads, it is becoming less and less easy to find those slimy, hopping and sometimes poisonous members of the animal kingdom. All over the world, even in remote jungles on the far side of the globe, frogs are losing the ecological battle for survival, and biologists are at a loss to explain their demise. Are amphibians simply over-sensitive to changes in the ecosystem? Could their rapid decline in numbers be signalling some coming environmental disaster for us all? This frightening scenario is in part the consequence of a dramatic increase over the last quarter of a century in the development of once natural areas of wet marshland: home not only to frogs but to all manner of wildlife. Yet, there are no obvious reasons why certain frog species are disappearing from rainforests in the Southern Hemisphere which are barely touched by human hands. The mystery is unsettling to say the least, for it is known that amphibian species are extremely sensitive to environmental variations in temperature and moisture levels. The danger is that planet Earth might not only lose a vital link in the ecological food chain (frogs keep populations of otherwise pestilent insects at manageable levels), but we might be increasing our output of air pollutants to levels that may have already become irreversible. Frogs could be inadvertently warning us of a catastrophe. An example of a bizarre occurrence regarding a species of frog dates from the summer of 1995, when “an explosion” of multi-coloured frogs of the species Rana klepton esculenta occurred in the Netherlands. Normally these frogs are brown and greenish-brown, but some unknown contributory factor is turning these frogs yellow and / or orange. Nonetheless, so far, the unusual bi- and even tri-coloured frogs are functioning similarly to their normal-skinned contemporaries. It is thought that frogs with lighter coloured skins might be more likely to survive in an increasingly warm climate due to global warming. One theory put forward to explain extinct amphibian species that seems to fit the facts concerns the depletion of the ozone layer, a well-documented phenomenon which has led to a sharp increase in ultraviolet radiation levels. The ozone layer is meant to shield the Earth from UV rays, but increased radiation may be having a greater effect upon frog populations than previously believed. Another theory is that worldwide temperature increases are upsetting the breeding cycles of frogs. Statements: 1．Biologists are unable to explain why frogs are dying out. 2．Attempts are being made to halt the development of wet marshland. 3．Frogs are important in the ecosystem because they control pests. 4．It is not known why Dutch frogs are changing colour. 5．It is a fact that frogs’ breeding cycle has been upset by worldwide increases in temperature.
考题
单选题Tina’s children, ______all live nearby, organized a big party for her eightieth birthday.A
who B
thatC
which D
as
考题
单选题If I lose my new watch my parents will be very annoyed ______ me.A
against B
with C
forD
about
考题
问答题Room prices are regularly $100, but for each additional room rented by a group, the price is reduced by $3 for each room. For example, 1 room costs $100, 2 rooms cost 2× $97 = $194, 3 rooms cost 3 ×$94 = $282, and so on. What is the total cost of renting 6 rooms?
考题
问答题Directions:Write a composition of no less than about 160 words, giving your views on the following question: Should companies give men and women equal opportunities to have time off work to look after their children?
考题
单选题What is the problem with Premier’s present IT system? A
It is very complicated to operate.B
It frequently breaks down.C
It is very slow.
考题
问答题Fuel Cells: 21st Century Electricity The 21st century’s leading energy source may very well depend on the development of a technology that was first discovered in 1839. Indeed, many experts believe that the future of electricity generation will not come from further refinement of solar, wind, coal or nuclear energy, but from fuel cells. Among the various types of fuel cells, the ceramic or solid oxide fuel cell promises to achieve the greatest efficiency of conversion of fossil fuels such as gas and coal to electricity while producing only very low levels of pollutants. To this end, a consortium comprising five leading organizations has established Ceramic Fuels Ltd, initially to expand fuel cell research and development and secondly, to bring the technology to commercial application. Ceramic fuel cells are electrochemical devices that directly convert fuels such as gasified coal or natural gas into electricity without the limitation of the Carnot cycle (an ideal thermodynamic cycle in which heat is taken onto a working fluid at a constant upper temperature and rejected at a constant lower temperature). In many respects, fuel cells work like batteries. As long as they are constantly supplied with fuel and oxidant, fuel cells can continuously produce power, removing the need for recharging. Fuel cells offer several advantages over traditional thermal power plants. The major difference between these two power generators is that the chemical energy of the fuel cell is converted directly to electrical power without intermediate conversion first to heat. The efficiency of a coal-fired thermal plant is typically in the range of 30%-35%. In a combined cycle gas turbine system running on natural gas, the maximum efficiency is in the range 45%-50%. Many experts believe high temperature fuel cells could reach efficiencies of 80%-85%. Ceramic fuel cells thus offer a more efficient and less polluting alternative to current power generation technologies. By-products from fuel cells are high quality heat, carbon dioxide and steam. The temperature of the exhaust gases is well above 500℃, meaning that solid oxide fuel cells are very attractive for electricity and heat generation as, in addition to supplying electricity, the leftover amounts of heat created during the process could be used to produce heat for industries, provide hot water supplies or warm buildings. Fuel cell technology is not new. In fact, the principles of fuel cell operation were first reported by British scientist Sir William Grove in 1839. His prototype used dilute sulphuric acid and operated at room temperature. Ceramic fuel cells developed much later, with the first one operating at 1000°C in 1937. Ceramic fuel cells offer many advantages over other energy systems: ● they have the potential to produce electricity efficient from several fuel sources ● they can generate large amounts of electricity ● they are relatively quick to install Fuel cell research and development is extremely competitive worldwide, with the USA, Japan and some European countries leading the charge to commercialize this promising technology. For instance, a Dutch Belgian company has developed a fuel cell for a Volkswagen van and is also working on a larger unit to power a bus. Additionally, a German company is working on a fuel cell for the European space shuttle program and for submarines, while a Canadian company is evaluating a fuel cell to be used in small buses. Recent reports point to promising large international markets for ceramic fuel cells. Prospects for fuel cells in South East Asian markets appear good. Several countries, including Indonesia, Thailand and The Philippines are expected to demonstrate high rates of growth in demand for power an encouraging situation for those countries quick enough to develop and commercialize fuel cell technology. Energy is a vital component of a technology-based society and the growing need for electricity generation by the most efficient method will ensure a promising future for ceramic fuel cell technology. The Ceramic Fuel Cells Ltd initiative represents a major collaborative venture between public and private sectors. It is envisaged that this venture will go a long way towards achieving a greater efficiency of energy use worldwide. Do the following statements reflect the claims of the writer in the Reading Passage? YES if the statement reflects the claims of the writer NO if the statement contradicts the claims of the writer NOT GIVEN if it is impossible to say what the writer thinks about this Statements: 1．Sir William Grove was a physicist. 2．Future transport vehicles may be powered by fuel cells. 3．European companies were first in the race to develop fuel cell technology. 4．Some rapidly developing South East Asian countries will soon market fuel cells. 5．Cooperation between private companies and governments will encourage wider use of efficient energy sources.
考题
单选题I was very hungry this morning and I wanted to eat a piece of bread. However, the bread I have is ______.A
very rough B
quite strong C
rather stale D
extremely weak
考题
单选题They are essentially unionistic, and seek union in harmony of spirit, life, and worship, _______ in a logical statement of doctrine.A
other thanB
better thanC
rather thanD
less than
考题
单选题We want such materials ______ can bear high temperature and pressure.A
thatB
asC
what D
which
考题
问答题Peter, David and Paul said following sentences: Peter: David is a liar, Paul always tells the truth. David: Peter is truthful. Paul: David is a liar, Peter is truthful. Two of these men always tell the truth, one of them sometimes tells the truth and sometimes lies. Which of these men is a liar?
考题
单选题______ to flow spontaneously from a block of ice to a surrounding volume of water, this could occur in complete accord with energy conservation.A
There were energy B
There was energyC
Were energyD
If energy is
考题
单选题Mrs. Wang belongs to the type of students who .A
live on a scholarship provided by their working unit back in ChinaB
are usually olderC
haven’t finished their college education in China yet
考题
单选题Sometimes it is necessary to be careful _____ the right date to sit for a test.A
when choosingB
when you will chooseC
when you have chosenD
when you chose
考题
单选题Alan: Wow, your homework looks great! Celia: Thanks.______ Alan: But didn’t Mrs. Smith tell us we had to write it in our books? Celia: ______ ... What am I going to do now?A
I typed it on my Dad’s computer. ; Oh no, you’re right!B
How did you do your homework? ; I remember now.C
Jason helped me with it. ; No, she didn’t, I’m afraid.D
In fact I did it poorly. ; Why didn’t you tell me earlier?
考题
单选题In this experiment, the students’ studies are stopped several times during the listening test and asked to report what they ______ during the pause before answering the questions.A
had just been thinking about B
have just been thinking aboutC
are just thinking aboutD
had just thought about
考题
单选题Jean: Mike, I’m exhausted. How much further is it? Mike: Not far, I promise. Jean: ______ Mike: Oh, come on, Jean.A
That’s great. B
But you said that half an hour ago.C
Let’s quicken our pace.D
Now, I’m as energetic as you.
考题
单选题Jenny and Jessica have short hair. Nicky and Jade have long hair. Jade, Jenny and Nicky are tall. Jessica is not. Jade does not wear spectacles, the others do. Which of the following statements must be true?A
Jade and Jenny are tall and have long hair.B
Jenny and Jessica have short hair and are tall.C
Jessica and Nicky wear spectacles and have short hair.D
Jessica and Jenny have short hair and wear spectacles.
考题
单选题What does the woman mean? A
She likes all of his novelsB
She likes none of his novelsC
She likes his latest novel very much
热门标签
最新试卷
