.

Some people can stay up all night and still get work done the next day. I’m not one of them. After a night without enough sleep, I feel sleepy. I have trouble remembering things. And all I want to do is to go back to bed and sleep.

How do you feel after you’ve stayed up late to finish schoolwork? Or the day after a slumber(睡眠) party? Scientists now say that your answers to these questions may depend on your genes, which tell our bodies and brains what to do. People have about 40,000 genes, and each gene can have different forms.

A new research suggests that a gene called period3 affects how well you function without sleep. The discovery adds to older evidence that period3 helps determine whether you like to stay up late or get up early.

The period3 gene comes in two forms: short and long. Everyone has two copies of the gene. So, you may have two longs, two shorts, or one of each. Your particular combination depends on what your parents passed on to you.

Scientists studied 24 people who had to stay awake for 40 hours straight. Then they took tests that measured how well they could remember lists of numbers.

Results showed that the people with the short form of period3 performed much better than those with the long form did. In both groups, people performed worst in the early morning. After the first round of experiments, participants were finally allowed to sleep. People in the group that performed well on the tests took about 18 minutes to nod off(瞌睡).

People with long period3 gene fell asleep in just 8 minutes. They also spent more time on deep sleep. That suggests that people with the long form of the gene need more and deeper sleep to keep their brains working in top form.

I think I must have the long form period3. What about you?

68. The purpose of the writer in the first paragraph is to ____________.

   A. attract readers to the topic of the passage

   B. show his /her poor memory for things

   C. show his /her envy of those energetic people

   D. prove his/her need for sleep

69. Whether you can stay up or not depends on___________.

   A. the size of your brain         B. the kind of genes you have

   C. your health                 D. your will

70. The aim of the research is to _______.

   A. find a new gene called period3   B. find out how genes affect a person’s need for sleep

   C. test how long you can stay awake   D. measure how good your memory is

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科目：高中英語(yǔ) 來(lái)源： 題型：閱讀理解

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B. Coffee is native to Colombia.
C. Coffee can keep one awake.
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A．learning English on Internet
B．teaching yourself English
C．the history of English
D．English broadcast on TV or over the radio
【小題2】English on - line interests a lot of people because     .
A．only in this way one can learn the language well
B．people don’ t have to pay
C．the learners can have a face to face study of courses with the teachers
D．it makes learning easier and more interesting
【小題3】Which of the following is NOT true according to the passage?
A．English is the only useful language on the Internet.
B．The Internet can provide people with the cultural information they need.
C．At http://www. Englishtown. com, people can study and play.
D．One can find a pen-friend on http://www.Englishtown. com.
【小題4】The underlined word “ surfing" probably means       .
A．setting upB．going overC．researchingD．inventing
【小題5】The omitted (省略）part of the passage might  .
A．show us some of the web sites on which sell books
B．tell us how to use the Internet
C．tell us where to get the CD - ROMS we need
D．show us some of the web sites on which English is taught

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B. The restaurants are expensive.

C. The bill is not fairly shared.

D. People  have  to  pay cash 

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A. A bit unusual   B. Full of tricks  C.Less costly  D. More interesting

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科目：高中英語(yǔ) 來(lái)源： 題型：閱讀理解

ple — their clothes, ideas, or languages—has changed as much as what they eat. The original chocolate drink was made from the seeds of the cocoa tree(可可樹(shù))by South American. Indians. The Spanish introduced it to the rest of the world during the 1500’s. And although it was very expensive, it quickly became fashionable. In London, shops where chocolate drinks were served became important meeting places. Some still exist today.
The potato is also from the New World. Around 1600, the Spanish brought it from Peru to Eu??rope, where it soon was widely grown. Ireland became so dependent on it that thousands of Irish peo??ple starved when the crop failed during the "Potato Famine (饑荒)" of 1845—1846, and thousands more were forced to leave their homeland and move to America.
There are many other foods that have traveled from South America to the Old World. But some others went in the opposite direction. Brazil is now the world’s largest grower of coffee, and coffee is an important crop in Colombia and other South American countries. But it is native to Ethiopia, a country in Africa. It was first made into a drink by Arabs during the 1400’s.
according to an. Arabic legend, coffee was discovered when a person named Kaldi noticed that his goats were attracted to the red berries on a coffee, bush. He tried one and experienced the " wide-awake" feeling that one third of the world’s population now starts the day with.

  1. 1.

    according to the passage, which of the following has changed the most in the last 500 years?

    1. A.
      Food.
    2. B.
      Clothing.
    3. C.
      Ideology.
    4. D.
      Language.
  2. 2.

    The word "some" in the last sentence of the first paragraph refers to________.

    1. A.
      some cocoa trees
    2. B.
      some chocolate drinks.
    3. C.
      some shops
    4. D.
      some South American Indians
  3. 3.

    Thousands of Irish people starved during the " Potato Famine" because________

    1. A.
      they were so dependent on potatoes that they refused to eat anything else
    2. B.
      they were forced to leave their homeland and move to America
    3. C.
      the weather conditions in Ireland were not suitable for growing potatoes
    4. D.
      the potato harvest was bad
  4. 4.

    according to the passage, which of the following statements is NOT true?

    1. A.
      One third of the world’s population drinks coffee.
    2. B.
      Coffee is native to Colombia.
    3. C.
      Coffee can keep one awake.
    4. D.
      Coffee drinks were first made by Arabs.

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