People born in winter are more likely to suffer mental health disorders, according to a recent study carried out by researchers at Vanderbilt University in Tennessee.Researchers raised baby mice from 题目和参考答案——青夏教育精英家教网—

题目内容

People born in winter are more likely to suffer mental health disorders, according to a recent study carried out by researchers at Vanderbilt University in Tennessee.

Researchers raised baby mice from birth to weaning (断奶) in either “summer” light cycles of 16 hours of light and 8 hours of dark or “winter” cycles of 8 hours of light and 16 hours of dark. A third group experienced 12 hours of light and 12 hours of dark a day.

Then half the winter mice stayed in a winter cycle, while half switched to a summer schedule. The summer mice were similarly split. The mice raised in equal periods of light and dark were split into three groups, one of which stayed on the 12?hour schedule, one of which joined the winter group, and one of which joined the summer group.

After 28 days, it turns out the summer?born mice behaved the same whether they stayed on the summer cycle or switched to winter. But among the winter?born mice, those stayed in winter kept their previous schedule, while those that switched to summer stayed active for an extra hour and a half, which indicates that mice born and weaned in a winter light cycle showed dramatic disruptions（破坏） in their biological clocks.

The finding is the first of its kind in mammals, and it could explain why people born in winter are at higher risk for mental health disorders.

“We know that the biological clock regulates(管理) mood in humans,” said study researcher McMahon. “If the mechanism (机制) similar to the one that we found in mice operates in humans, then it could not only have an effect on a number of behavioral disorders, but also have a more general effect on personality.”

1. How many groups of mice are there finally in all in the experiment?

A．Four. B．Five. C．Six. D．Seven.

2.What's the main idea of the text?

A．The biological clock regulates mood in humans.

B．People born in winter are at higher risk for physical health disorders.

C．Being born in winter has a negative effect on people's mental health.

D．The length of light will influence the behavior of the mice.

3. The underlined word “split”(Paragraph 3) can be replaced by ________.

A．divided B．torn C．hit D．ended

4.Who is probably the reader of the passage?

A．A job?hunter.

B．A student in the university.

C．A newly?married couple.

D．An experienced dentist.

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文中共有10处语言错误，错误涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。

删除：把多余的词作斜线（\）划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：1.每处错误及其修改均仅限一词； 2.只允许修改10处，多者（从第11处起）不计分。

My father speaks very well English, but he knows little Japanese. He went to Tokyo in November 11 for a meeting. The meeting over a week later. The next morning he went to a park and then do some shopping. At noon, he was very much hungry. He went to nearest restaurant and sat down at a table. A man came up to him and asked that he needed. He said he liked noodles, chicken and some fishes. He spoke to the man in English, and the man couldn't understand him. My father had to write some Chinese words for the food and got them.

Electrical devices (仪器) could soon use power made by human energy. Scientists say they have developed an experimental device that produces electricity from the physical movement of a person walking. British scientist Max Donelan and other scientists in Canada and the United States developed the device.

The device connects to a person's knee. As the person walks, the device captures energy each time the person slows down. To do this, the device helps with the slowing down movement of the leg. The movements of the walking person push parts of a small machine that produces electricity. Using the device, an adult walking quickly could produce thirteen watts of electricity in just a minute. Donelan says walking at that speed could produce enough power to operate a laptop computer for six minutes.

There are several possible uses for the device. Developers say it could help people who work in areas without electricity to operate small computers. The device could also be used in hospitals to operate heart pacemakers (起搏器). It could even be used to assist in the movement of robotic arms and legs.

The experimental version of the device weighs about one and a half kilograms, but it is too costly for most people to buy. But the researchers hope to make a lighter, less costly version. An improved version should be ready in one year.

The developers hope the device will one day help developing countries. Nearly twenty-five percent of people around the world live without electric power.

A similar product was invented in 2005 by Larry Rome of the University of Pennsylvania. He created a bag carried on a person's back that also produces power from walking. The knee device does not produce as much electricity as the bag. But the bag requires the walker to carry a load of twenty to thirty kilograms.

1.The second paragraph mainly talks about ________.

A. who developed the device

B. how the device works

C. several possible uses for the devices

D. how much electricity the device can produce

2.What is the disadvantage of the experimental version of the device?

A. It is too heavy for the walker to bear.

B. It is too complex for people to use.

C. It will slow down one's walking speed.

D. It is too expensive for most people to afford.

3.Compared with the device designed by Larry Rome, this new device ________.

A. produces power without adding more loads to the walker

B. can produce more power in a much shorter time

C. needs to be equipped with a battery

D. can help the walker walk faster

4.From the passage, we can learn that the electrical device can ________.

A. help housewives operate the micro-wave oven

B. make it much easier for us to go online

C. produce more electricity than that invented by Larry Rome

D. be applied in medicine to operate heart pacemakers

Was it because she was ill ________ she didn’t go to attend the meeting?

A. that B. which

C. as D. what

–Where is Mother?

–She is in the kitchen. She ______ the housework all morning.

A. is doing B. was doing

C. has done D. has been doing

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。

删除：把多余的词用斜线(＼)划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：1．每处错误及其修改均仅限一词；

2．只允许修改10处，多者(从第11处起)不计分。

As winter vacation are coming soon, my classmates are trying very hardly to get train tickets to go home. But I have made up my minds to spend the vacation far from home for first time in my life. My parents have agreed to visiting me, and I will have a different vacation. When they came here, I will show them around my university and the city just as well. I have decided to buy them some nice gifts. It will be a big surprising for them. My parents have done a lot to me, and I think it is high time that I did anything special to express my thanks.

Outside her shabby cottage, old Mrs. Tailor was hanging out laundry on a wire line, unaware that some children lay hidden in the leaves of a nearby tree watching her every move. They were determined to find out if she really was a witch.

They watched as she took a broomstick to clean the dirt from her stone steps. But, much to their disappointment, she did not mount the broomstick and take a flight. Suddenly, the old lady’s work was interrupted by the cackling of her hen—a signal that an egg had been laid in the warm nest on top of the haystack.

The old broomstick was put aside as she hobbled off towards the haystack followed by Sooty, a black cat she had rescued from a fox trap some time back. With only three legs, it was hard for Sooty to keep up with the old lady. The cat provided proof—the children were sure that only a witch could own a black cat with three legs.

There, standing on a wooden box, was Mrs. Tailor, stretching out to gather her precious egg. Taking the egg in one of her hands, she began to climb down when, without warning, the box broke and the old lady fell.

“We have to got and help her,” whispered Amy.

“What if it is a trick?” replied Ben.

“Don’t be silly, Ben. If she were a witch, she would have turned us into frogs already,” reasoned Meg. “Come on, Amy, let’s go.” The girls climbed down the tree and ran all the way to the haystack.

Approaching carefully, they could see a wound on the old lady’s face. She had knocked her head on a stone and her ankle was definitely broken. “Go and get Dad,” Amy yelled to her brother. “Tell him about the accident.”

The boys did not need another excuse to leave. They ran as fast as they could for help, hoping that Mrs. Tailor would not wake and turn the girls into frogs.

1.Why were the children hiding in the tree?

A. They wanted to watch Mrs. Tailor do her housework closely.

B. They were playing a hide-and-seek game.

C. They wanted to find out if the rumors about Mrs. Tailor were true.

D. They were pretending to be spies.

2.Mrs. Tailor stopped sweeping when ________.

A. her front steps were clean

B. she noticed the children in the tree

C. she was ready to take a flight

D. she heard the hen cackling

3.Ben did not rush in help Mrs. Tailor because ________.

A. he thought that she could be tricking them

B. he knew that they could not have been in the tree

C. he did not see the old lady fall down

D. he was afraid of the three-legged cat

4.Which of these old sayings best suits the story’s lesson for us?

A. Make hay while the sun shines.

B. Never judge a book by its cover.

C. People in glasshouses should not throw stones.

D. A bird in the hands worth two in the bush.

Why don’t you just _______ your own business and leave me alone?

A. makeB. openC. considerD. mind

Our room was on the second floor but you could still hear the roar of the ocean and see the stars at night. I used to take long walks along the water. The food in town was wonderful and the people were very friendly. The area was very quiet and peaceful, and fairly deserted.

The last evening of our vacation, however, we all heard strange footsteps following closely behind us as we were walking up to our room in the holiday centre. We turned around and noticed a fairly young man moving very rapidly across the beach and getting closer to us. He was tall and wore a baseball cap. We couldn’t see his face and he was approaching us very rapidly. The man’s actions made my dad very nervous. Dad warned us that we’d better try to make it to our hotel room as quickly as possible. I didn’t like my dad’s voice; I could hear fear in it. It was late and we were all alone. We didn’t have any cell phones on us. I never saw Dad as worried as he was then and I knew that something was terribly wrong. The sense of fear started to overwhelm Mom and me. We had had such a good time in town. Now, the night was rapidly turning into a dangerous situation.

We could hear the man’s footsteps getting closer. Dad’s face was almost pale. The so-called intruder (侵入者) had moved nearer and nearer when all of a sudden, the nearby vending(自动贩卖) machine started going crazy and spitting out cans of soda! The noise actually scared the intruder and he ran out of sight. My parents were shaking, but we all turned around to see who had put money into the vending machine downstairs, and actually saved us, but no one was around at all. Not a soul.

It’s one vacation I will never forget.

1.Where did the author spend her vacation?

A. Near a lake.B. At the seaside.

C. In a village.D. In a mountain.

2.What happened on the last evening of their vacation?

A. They were followed by a stranger.

B. Their cell phones were missing.

C. Their money was stolen.

D. They lost their way.

3.The underlined word “overwhelm” in Paragraph 2 means ________.

A. controlB. moveC. exciteD. impress

4.What helped them get out of the trouble?

A. Their quick action.

B. Other people’s kind help.

C. The young man’s warning.

D. The noise from the vending machine.

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