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精英家教網 > 初中英語 > 題目詳情

Which one is ________of all the stories?


  1. A.
    the interestingest
  2. B.
    more interesting
  3. C.
    the most interesting
  4. D.
    most interesting
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DNA is the whole “map” of the human body. It is something that all humans have, and it tells the body what to do. DNA is the reason that we look like our parents, because we get some of their DNA to make our own.

People have been trying to understand the human body for a long time. In 1860, Mr. Mendel discovered why we look the same as other people in our family. It is because of small things called “genes”(基因)in our body. In 1953, two scientists, Watson and Crick, found out that genes are really messages. They’re written in the DNA with a special language.

In 1961, another two scientists found the first “word” that they could understand in that language. It shows how DNA tells the cell (細胞)to build its parts. So far, scientists have found all the words in the DNA map, but we still don’t understand what they all do. By understanding what just one “word” means, we can help to save people from several illnesses. So the more we understand, the more doctors will be able to do.

Most people hope that this will help to make better medicine and help sick people. Other people worry that when we learn more “words” and find out more information, we will use it in the wrong way. Just to make people more attractive (有吸引力的), or stop sick people getting jobs.

1.When did Mr. Mendel discover why we look the same as other people in our family?

A. In 1680.????????????? ????????????? B. In 1860.????????????? ????????????? C. In 1953.????????????? ????????????? D. In 1961.

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C. Make maps for them.????????? ????????????? D. Make them attractive.

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A. We look like our parents because of “genes” in our body.

B. We have understood what all the words in the DNA map do.

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D. DNA tells the cell to build its parts.

5.What do people think about this research about DNA?

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Baseball is one of the favorite sports in the U.S.A. Children play baseball in sports fields or parks.

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根據句子要求, 用括號中詞的正確形式填空,并將答案寫在答題紙相應題號的橫線上。

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2.It’s very important for students           (sleep) eight hours a night.

3.How many         (foot) does a dog have?

4.Don't ________ (worried) about your English. I can help you.

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6.This song is very popular in many             (west)countries.

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