1. Don't leave the camp before the fire burns        .

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科目：高中英語 來源： 題型：

4. 有一天，克魯索沿著沙灘走向他的船時，在沙子里看見一個人的腳印。

One day,        ， Crusoe saw in the sand the mark of a man's footprints.

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again and again， out of breath， in contrast to， more than， for fear of

1. When I climbed up to the fifth floor,I was        .

2. The manager refused to have his daughter in his department        showing favour to her.

3. He read the English text        but still couldn't recite it.

4. There are several possible explanations for the great job stability in Japan       

the great job mobility in theUSA.

5. Modern education is        sitting at a desk and looking at the blackboard.

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2. I wish I        (今早睡得更久些) ，but I had to get up and come to class.

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 Taking good notes is a time-saving skill that will help you to become a better student in several ways.1     Second,your notes are excellent materi?als to refer to when you are studying for a test. Third,note-taking offers variety to your study time and helps you to hold your interest. You will want to take notes during classroom discussions and while reading a textbook or doing research for a report. 2      Whenever or however you take notes,keep in mind that note-taking is a selective process. 3     

  The following methods may work best for you：

  .Read the text quickly to find the main facts and ideas in it.

  .Carefully read the text and watch for words that can show main points and supporting facts.

  .Write your notes in your own words.

  .4     

.Note any questions or ideas you may have about what was said or written. As you take notes,you may want to use your own shorthand (速記) .

When you do this,be sure that you understand your symbols and that you use them all the time. 5     

   A. Use words,not complete sentences.

   B. There are three practical note-taking methods.

   C. You must write your notes on separate paper.

   D. Otherwise,you may not be able to read your notes later.

   E.You will also want to develop your own method for taking notes.

   F.That means you must first decide what is important enough to include in your notes.

   G.First,the simple act of writing something down makes it easier for you to understand and remember it.

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2. The speaker a     to our emotions rather than to our minds.

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6. It's good to        (breath) in fresh country air instead of city smoke.

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5. If I        (be) fly tomorrow,I would get up at five on the early morning.

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 Researchers at the University of California,San Francisco have discov?ered a gene that might explain why some people need less sleep than others. Experts say the finding opens the door into the study of sleep.

  Even so,Ying-Hui Fu of the University of California? San Francisco says little is known about this basic human need. "We know very little about sleep. We don't know how our sleep is regulated," she said. "We don't know why some people need more sleep;why some people need less sleep;why most of us need eight hours of sleep;why,when we don't sleep,we don't function very well. We just don't know much about sleep at all.” Fu says sleep can be stimulated in humans when they drink alcoholic bev?erages or take sleeping pills. But she says no specific gene had been discovered that appeared to be involved in regulating sleep—until now.

  Fu's research team found the sleep gene by accident while looking for a molecular mechanism (分子機(jī)制) .In the course of their studies,Fu says re?searchers identified a genetic mutation in people who go to bed at a normal time but sleep for only about six hours,feeling as refreshed when they wake up as those who appear to need eight hours or more of sleep.

  Investigators genetically engineered mice to carry the mutation,and com?pared their sleep cycles and brain activity to others that did not have. They found that those with the gene slept less and were awake for longer periods of time. Mice with the mutation were also more energetic than normal mice,af?ter being deprived of sleep for 24 hours.

  Although the gene mutation is thought to be extremely rare,Fu says it is a significant find for sleep researchers. "We essentially don't know anything about how sleep is regulated," she says. "But this gene is kind of opening a door for us to say, ' Now we have this gene and we know it affects human sleep quantity.，” Fu adds that the gene might be related to other medical conditions.

1. What have the researchers discovered?

   A. How our sleep is regulated.

   B. Why some people need less sleep than others.

   C. Why most of us need eight hours of sleep.

   D. Why we don't function very well.

2. According to the passage,we can know      .

   A. the gene can make the body awake longer

   B. the gene extends people's sleep

   C. the gene can improve people's sleep quality

   D. the gene mutation can be found in each one

3. Which is the best title for this passage?

   A. People need right sleep

   B. Gene and sleep

   C. Researchers discover the secret of sleep

   D. Researchers discover the gene that affects sleep

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