Question

【題目】 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(xì)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 can help to make better medicine to help sick people. Other people worry that when we learn more“ word” and find out more information, we will use it in the wrong way. Just to make people more attractive, or stop sick people getting jobs.

【1】Watson and Crick found in 1953.

A. all the words in the DNA map

B. small things called“ genes” in our body

C. genes are written in the DNA with a special language

D. the first" word" they could understand in that language

【2】If we understand more" words" in the DNA map, we can help sick people.

A. get jobsB. get better medicine

C. in the wrong wayD. in an attractive way

【3】What do people think about this research about DNA?

A. It can be only bad.B. It can be only good.

C. It can be good and bad.D. It can be good but won't come true.

【4】If we put the passage into three parts, which of the following is the best?

（①-Para. （自然段）1②=Para. 2③=Para. 3④-Para. 4）

A. ①; ②③; ④B. ①; ②: ③④C. ①②; ③; ④D. ①②; ③④

Answer 1

【答案】

【1】C

【2】B

【3】C

【4】A

【解析】

這篇短文簡(jiǎn)要的介紹了DNA的發(fā)現(xiàn)歷史，并介紹了這一發(fā)現(xiàn)對(duì)于人類(lèi)生活的影響及人們對(duì)此的不同意見(jiàn)。

【1】細(xì)節(jié)理解題。根據(jù)第二段In 1953, two scientists, Watson and Crick, found out that genes are really messages. They're written in the DNA with a special language. 可知，基因的確是信息。它們是用一種特殊的語(yǔ)言寫(xiě)在DNA上的。故選C。

【2】細(xì)節(jié)理解題。根據(jù)最后一段Most people hope that this will help to make better medicine and help sick people．及上文描述，可知，如果我們對(duì)DNA圖譜有更多的理解，就可以制作更好的藥物來(lái)幫助病人。故選B。

【3】細(xì)節(jié)理解題。根據(jù)最后一段Most people hope that this can help to make better medicine to help sick people大多數(shù)人希望制作更好的藥物來(lái)幫助病人 。Other people worry that when we learn more“ word” and find out more information, we will use it in the wrong way. Just to make people more attractive, or stop sick people getting jobs.有些人擔(dān)心我們用錯(cuò)。只是為了讓人們更具吸引力，或者阻止病人找到工作�？芍�，人們對(duì)這一發(fā)現(xiàn)持正反兩方面的意見(jiàn)，可能好可能壞。故選C。

【4】段落大意題。通讀全文，第一段主要介紹DNA。第二段和第三段主要介紹DNA的發(fā)現(xiàn)歷史。第四段主要說(shuō)明人們對(duì)這一發(fā)現(xiàn)持不同意見(jiàn)。故文章可分三大段。故選A。