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单选题
Mice in northern Europe go away from homes when _____.
A
they are short of food
B
there is not enough space
C
it’s getting warmer in the low land
D
it’s getting colder in the mountains
参考答案
参考解析
解析：
由第二段倒数第三句“In northern Europe, there is a kind of mouse. They leave their mountain homes when they become too crowded.”可以推测，住宅中已经没有足够的空间供老鼠生存了。
由第二段倒数第三句“In northern Europe, there is a kind of mouse. They leave their mountain homes when they become too crowded.”可以推测，住宅中已经没有足够的空间供老鼠生存了。
更多 “单选题Mice in northern Europe go away from homes when _____.A they are short of foodB there is not enough spaceC it’s getting warmer in the low landD it’s getting colder in the mountains” 相关考题
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In the Northern Hemisphere a wind is said to veer when the wind ______.A.changes direction clockwise, as from north to east, etcB.changes direction counterclockwise, as from south to east, etcC.changes direction violently and erraticallyD.remains constant in direction and speed
考题
请阅读Passage l。完成第21—25小题。
Passage 1
It's one of our common beliefs that mice are afraid of cats. Scientists have long known that even if a mouse has never seen a cat before, it is still able to detect chemical signals released from it and run away in fear. This has always been thought to be something that is hard-wired into a mouse s brain.
But now Wendy Ingram, a graduate student at the University of California, Berkeley, has challenged this common sense. She has found a way to"cure" mice of their inborn fear of cats by infecting them with a parasite, reported the science journal Nature.
The parasite, called Toxoplasma gondii, might sound unfamiliar to you, but the shocking fact is that up to one-third of people around the world are infected by it. This parasite can cause different diseases among humans, especially pregnant women--it is linked to blindness and the death of unborn babies.
However, the parasite's effects on mice are unique. Ingram and her team measured how mice reacted to a cat's urine(尿) before and after it was infected by the parasite. They noted that normal mice stayed far away from the urine while mice that were infected with the parasite walked freely around the test area.
But that's not all. The parasite was found to be more powerful than originally thought—even after researchers cured the mice of the infection. They no longer reacted with fear to a cat's smell,which could indicate that the infection has caused a permanent change in mice's brains.
Why does a parasite change a mouse's brain instead of making it sick like it does to humans?
The answer lies in evolution.
"It's exciting scary to know how a parasite can manipulate a mouse's brain this way," Ingram said. But she also finds it inspiring."Typically if you have a bacterial infection, you go to a doctor and take antibiotics and the infection is cleared and you expect all the symptoms to also go away."
She said, but this study has proven that wrong."This may have huge implications for infectious disease medicine."
The passage is mainly about__________.
查看材料
A．mice' s inborn terror of cats
B．the evolution of Toxoplasma
C．a new study about the effects of a parasite on mice
D．a harmful parasite called Toxoplasma gondii
考题
请阅读Passage l。完成第21—25小题。
Passage 1
It's one of our common beliefs that mice are afraid of cats. Scientists have long known that even if a mouse has never seen a cat before, it is still able to detect chemical signals released from it and run away in fear. This has always been thought to be something that is hard-wired into a mouse s brain.
But now Wendy Ingram, a graduate student at the University of California, Berkeley, has challenged this common sense. She has found a way to"cure" mice of their inborn fear of cats by infecting them with a parasite, reported the science journal Nature.
The parasite, called Toxoplasma gondii, might sound unfamiliar to you, but the shocking fact is that up to one-third of people around the world are infected by it. This parasite can cause different diseases among humans, especially pregnant women--it is linked to blindness and the death of unborn babies.
However, the parasite's effects on mice are unique. Ingram and her team measured how mice reacted to a cat's urine(尿) before and after it was infected by the parasite. They noted that normal mice stayed far away from the urine while mice that were infected with the parasite walked freely around the test area.
But that's not all. The parasite was found to be more powerful than originally thought—even after researchers cured the mice of the infection. They no longer reacted with fear to a cat's smell,which could indicate that the infection has caused a permanent change in mice's brains.
Why does a parasite change a mouse's brain instead of making it sick like it does to humans?
The answer lies in evolution.
"It's exciting scary to know how a parasite can manipulate a mouse's brain this way," Ingram said. But she also finds it inspiring."Typically if you have a bacterial infection, you go to a doctor and take antibiotics and the infection is cleared and you expect all the symptoms to also go away."
She said, but this study has proven that wrong."This may have huge implications for infectious disease medicine."
Which of the following statements is true according to the passage?
查看材料
A．Toxoplasma gondii causes people strange and deadly diseases.
B．With certain infection the infectious disease cannot be cured completely.
C．Human beings infected by toxoplasma gondii will have permanent brain damage.
D．Toxoplasma gondii is harmful to human beings, but it does no harm to mice.
考题
请阅读Passage l。完成第21—25小题。
Passage 1
It's one of our common beliefs that mice are afraid of cats. Scientists have long known that even if a mouse has never seen a cat before, it is still able to detect chemical signals released from it and run away in fear. This has always been thought to be something that is hard-wired into a mouse s brain.
But now Wendy Ingram, a graduate student at the University of California, Berkeley, has challenged this common sense. She has found a way to"cure" mice of their inborn fear of cats by infecting them with a parasite, reported the science journal Nature.
The parasite, called Toxoplasma gondii, might sound unfamiliar to you, but the shocking fact is that up to one-third of people around the world are infected by it. This parasite can cause different diseases among humans, especially pregnant women--it is linked to blindness and the death of unborn babies.
However, the parasite's effects on mice are unique. Ingram and her team measured how mice reacted to a cat's urine(尿) before and after it was infected by the parasite. They noted that normal mice stayed far away from the urine while mice that were infected with the parasite walked freely around the test area.
But that's not all. The parasite was found to be more powerful than originally thought—even after researchers cured the mice of the infection. They no longer reacted with fear to a cat's smell,which could indicate that the infection has caused a permanent change in mice's brains.
Why does a parasite change a mouse's brain instead of making it sick like it does to humans?
The answer lies in evolution.
"It's exciting scary to know how a parasite can manipulate a mouse's brain this way," Ingram said. But she also finds it inspiring."Typically if you have a bacterial infection, you go to a doctor and take antibiotics and the infection is cleared and you expect all the symptoms to also go away."
She said, but this study has proven that wrong."This may have huge implications for infectious disease medicine."
The experiment found that mice infected with toxoplasma gondii__________.
查看材料
A．stayed far away from cat's urine
B．moved around the area freely and tearlessly
C．because more sensitive to cat's smell
D．were more afraid of cats
考题
请阅读Passage l。完成第21—25小题。
Passage 1
It's one of our common beliefs that mice are afraid of cats. Scientists have long known that even if a mouse has never seen a cat before, it is still able to detect chemical signals released from it and run away in fear. This has always been thought to be something that is hard-wired into a mouse s brain.
But now Wendy Ingram, a graduate student at the University of California, Berkeley, has challenged this common sense. She has found a way to"cure" mice of their inborn fear of cats by infecting them with a parasite, reported the science journal Nature.
The parasite, called Toxoplasma gondii, might sound unfamiliar to you, but the shocking fact is that up to one-third of people around the world are infected by it. This parasite can cause different diseases among humans, especially pregnant women--it is linked to blindness and the death of unborn babies.
However, the parasite's effects on mice are unique. Ingram and her team measured how mice reacted to a cat's urine(尿) before and after it was infected by the parasite. They noted that normal mice stayed far away from the urine while mice that were infected with the parasite walked freely around the test area.
But that's not all. The parasite was found to be more powerful than originally thought—even after researchers cured the mice of the infection. They no longer reacted with fear to a cat's smell,which could indicate that the infection has caused a permanent change in mice's brains.
Why does a parasite change a mouse's brain instead of making it sick like it does to humans?
The answer lies in evolution.
"It's exciting scary to know how a parasite can manipulate a mouse's brain this way," Ingram said. But she also finds it inspiring."Typically if you have a bacterial infection, you go to a doctor and take antibiotics and the infection is cleared and you expect all the symptoms to also go away."
She said, but this study has proven that wrong."This may have huge implications for infectious disease medicine."
The author's attitude towards the experiment is__________.
查看材料
A．positive
B．subjective
C．negative
D．objective
考题
根据以下材料，回答
It′s one of our common beliefs that miceare afraid of cats. Scientists have long known that even if a mouse has neverseen a cat before, it is still able to detect chemical signals released from itand run away in fear. This has always been thought to be something that is hard-wiredinto a mouse′ s brain.
But now Wendy Ingram, a graduate student atthe University of California, Berkeley, has challenged this common sense. Shehas found a way to "cure" mice of their inborn fear of cats by infectingthem with a parasite, reported the science journal Nature.
The parasite, called Toxoplasma gondii,might sound unfamiliar to you, but the shocking fact is that up to one-third ofpeople around the world are infected by it. This parasite can cause different diseasesamong humans, especially pregnant women--it is linked to blindness and thedeath of unborn babies.
However, the parasite′s effects on mice areunique, Ingram and her team measured how mice reacted to a cat′ s urine (尿) before and after it was infected by the parasite. They noted thatnormal mice stayed far away from the urine while mice that were infected withthe parasite walked freely around the test area.
But that′s not all. The parasite was foundto be more powerful than originally thought--even after researchers cured themice of the infection. They no longer reacted with fear to a cat′s smell, whichcould indicate that the infection has caused a permanent change in mice′ sbrains.
Why does a parasite change a mouse′s braininstead of making it sick like it does to humans? The answer lies in evolution.
"It′s exciting scary to know how aparasite can manipulate a mouse′s brain this way," Ingram said. But shealso finds it inspiring. "Typically if you have a bacterial infection, you go to a doctor andtake antibiotics and the infection is cleared and you expect all the symptomsto also go away." She said, but this study has proven that wrong. "This may have huge implicationsfor infectious disease medicine."
The experiment found that mice infectedwith toxoplasma gondii ____________.A.stayed far away from cat' s urine
B.moved around the area freely andfearlessly
C.because more sensitive to cat' s smell
D.were more afraid of cats
考题
It’s one of our common beliefs that mice are afraid of cats. Scientists have long known that even if a mouse has never seen a cat before, it is still able to detect chemical signals released from it and run away in fear. This has always been thought to be something that is hard-wired into a mouse’ s brain.
But now Wendy Ingram, a graduate student at the University of California, Berkeley, has challenged this common sense. She has found a way to “cure” mice of their inborn fear of cats by infecting them with a parasite, reported the science journal Nature.
The parasite, called Toxoplasma gondii, might sound unfamiliar to you, but the shocking fact is that up to one-third of people around the world are infected by it. This parasite can cause different diseases among humans, especially pregnant women—it is linked to blindness and the death of unborn babies.
However, the parasite’s effects on mice are unique. Ingram and her team measured how mice reacted to a cat's urine (尿) before and after it was infected by the parasite. They noted that normal mice stayed far away from the urine while mice that were infected with the parasite walked freely around the test area.
But that's not all. The parasite was found to be more powerful than originally thought—even after researchers cured the mice of the infection. They no longer reacted with fear to a cat's smell, which could indicate that the infection has caused a permanent change in mice's brains.
Why does a parasite change a mouse's brain instead of making it sick like it does to humans The answer lies in evolution.
“It’s exciting scary to know how a parasite can manipulate a mouse's brain this way,"Ingram said. But she also finds it inspiring. "Typically if you have a bacterial infection, you go to a doctor and take antibiotics and the infection is cleared and you expect all the symptoms to also go away,” she said, but this study has proven that wrong. “This may have huge implications for infectious disease medicine."
The author's attitude towards the experiment is__________.查看材料A.positive
B.subjective
C.negative
D.objective
考题
根据以下材料，回答
It′s one of our common beliefs that miceare afraid of cats. Scientists have long known that even if a mouse has neverseen a cat before, it is still able to detect chemical signals released from itand run away in fear. This has always been thought to be something that is hard-wiredinto a mouse′ s brain.
But now Wendy Ingram, a graduate student atthe University of California, Berkeley, has challenged this common sense. Shehas found a way to "cure" mice of their inborn fear of cats by infectingthem with a parasite, reported the science journal Nature.
The parasite, called Toxoplasma gondii,might sound unfamiliar to you, but the shocking fact is that up to one-third ofpeople around the world are infected by it. This parasite can cause different diseasesamong humans, especially pregnant women--it is linked to blindness and thedeath of unborn babies.
However, the parasite′s effects on mice areunique, Ingram and her team measured how mice reacted to a cat′ s urine (尿) before and after it was infected by the parasite. They noted thatnormal mice stayed far away from the urine while mice that were infected withthe parasite walked freely around the test area.
But that′s not all. The parasite was foundto be more powerful than originally thought--even after researchers cured themice of the infection. They no longer reacted with fear to a cat′s smell, whichcould indicate that the infection has caused a permanent change in mice′ sbrains.
Why does a parasite change a mouse′s braininstead of making it sick like it does to humans? The answer lies in evolution.
"It′s exciting scary to know how aparasite can manipulate a mouse′s brain this way," Ingram said. But shealso finds it inspiring. "Typically if you have a bacterial infection, you go to a doctor andtake antibiotics and the infection is cleared and you expect all the symptomsto also go away." She said, but this study has proven that wrong. "This may have huge implicationsfor infectious disease medicine."
The author′s attitude towards theexperiment is ____________.A.positive
B.subjective
C.negative
D.objective
考题
根据以下材料，回答
It′s one of our common beliefs that miceare afraid of cats. Scientists have long known that even if a mouse has neverseen a cat before, it is still able to detect chemical signals released from itand run away in fear. This has always been thought to be something that is hard-wiredinto a mouse′ s brain.
But now Wendy Ingram, a graduate student atthe University of California, Berkeley, has challenged this common sense. Shehas found a way to "cure" mice of their inborn fear of cats by infectingthem with a parasite, reported the science journal Nature.
The parasite, called Toxoplasma gondii,might sound unfamiliar to you, but the shocking fact is that up to one-third ofpeople around the world are infected by it. This parasite can cause different diseasesamong humans, especially pregnant women--it is linked to blindness and thedeath of unborn babies.
However, the parasite′s effects on mice areunique, Ingram and her team measured how mice reacted to a cat′ s urine (尿) before and after it was infected by the parasite. They noted thatnormal mice stayed far away from the urine while mice that were infected withthe parasite walked freely around the test area.
But that′s not all. The parasite was foundto be more powerful than originally thought--even after researchers cured themice of the infection. They no longer reacted with fear to a cat′s smell, whichcould indicate that the infection has caused a permanent change in mice′ sbrains.
Why does a parasite change a mouse′s braininstead of making it sick like it does to humans? The answer lies in evolution.
"It′s exciting scary to know how aparasite can manipulate a mouse′s brain this way," Ingram said. But shealso finds it inspiring. "Typically if you have a bacterial infection, you go to a doctor andtake antibiotics and the infection is cleared and you expect all the symptomsto also go away." She said, but this study has proven that wrong. "This may have huge implicationsfor infectious disease medicine."
Which of the following statements istrue according to the passage?A.Toxoplasma gondii causes people strangeand deadly diseases.
B.With certain infection the infectiousdisease cannot be cured completely.
C.Human beings infected by toxoplasmagondii will have permanent brain damage.
D.Toxoplasma gondii is harmful to humanbeings, but it does no harm to mice.
考题
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Yet birds travel over mountains,forests,lakes and even across the oceans,and do not stray from?the path.They find their way back in the spring to the same orchard（果园）and the very trees where?they nested the summer before.
It is wonderful how quickly birds travel such long distances from their summer homes to their?winter ones.Some birds have been known to fly hundreds of miles in a day.But others travel much?more slowly.
Why do birds undertake these long journeys twice a year?Perhaps cold weather and lack of?food drive them from us in the autumn,but we cannot tell why they leave the sunny south to come?back to us in the spring.We know only that many of them like to make their nests and rear their?young in the north.
We are sorry to see them go,but we know that when winter is over they will come back to us.
The underlined part"stray from the path"means__________.A.lose its way
B.stay on the path
C.keep away from the path
D.fly along the path
考题
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考题
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考题
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考题
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考题
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makes no change at allB
is somewhat lower than it would be for winds from a northern quadrantC
is uncertain and may fluctuate by increasing and decreasingD
is somewhat higher than it would be for winds from the northern quadrant
考题
单选题When implementing the project, we__________a lot of unexpected opposition from our colleagues．A
run forB
make againstC
run up againstD
make away with
考题
单选题The creation of Northern Ireland dates from（）.when the Irish Free State was set up.A
1916B
1921C
1937D
1949
考题
单选题In the Northern Hemisphere a wind is said to veer when the wind（）.A
Changes direction clockwise，as from north to east，etcB
Changes direction violently and erraticallyC
Remains constant in direction and speedD
Changes direction counterclockwise，as from south to east，etc
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