Question

【题目】

On June 26, 2000, two scientists, called Francis Collins and Craig Venter, told the world that they could now read the whole “map” of the human body: DNA. DNA is something that everybody has, and it tells the body what to do. DNA is the reason that we look like our mother and father, 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, Gregor Mendel discovered a special reason why we look the same as other people in our family. It is because of small things named “genes” in our body. In 1953, James Watson and Francis Crick made another discovery and found out that those small parts are real messages written in the DNA with a special language.

In 1961, Marshall Nirenberg and Johann Matthaei found a message in DNA showing how DNA tells the cell (细胞) to build its parts. Scientists have now found all the words in the DNA map, but we still do not understand what they all do. By understanding what just one “word” means, we can help save more people from several illnesses.

Most people hope that this will help make better medicine and help sick people. Other people worry that when people begin to know more words and find out lots of other information, we might use it in a wrong way, just to make people more attractive, or stop sick people from getting jobs. Man would have to meet a lot of trouble if DNA technic wasn’t limited in use.

根据短文内容，选择最佳答案。

【1】What did the two scientists first discover in 1961?

A. The “map” of DNA.B. A new illness.

C. The language of DNA.D. A message of DNA.

【2】What can we do if we understand some “words” of the language inside the body?

A. Make people get new jobs.B. Make medicine for illnesses.

C. Make maps of human.D. Make people less attractive.

【3】What do people think about this work?

A. It can cause good or bad results.B. It can cause only good results.

C. It can cause good results but won’t work.D. It can cause only bad results.

Answer 1

【答案】

【1】D

【2】B

【3】A

【解析】

本文简单介绍了科学家对DNA的研究历程。大多数人希望这将有助于制造更好的药物救治生病的人。其也有人担心这可能会带来一些不好的结果。

【1】题意：1961年这两位科学家首次发现了什么？考查细节理解。A. The “map” of DNA.：DNA的“地图”；B. A new illness：一种新的疾病；C. The language of DNA.：DNA的语言；D. A message of DNA：DNA的信息。根据第3段第1句In 1961, Marshall Nirenberg and Johann Matthaei found a message in DNA showing how DNA tells the cell (细胞) to build its parts.（1961年，MarshallNirenberg和Johann Matthaei在DNA中发现了一条信息，显示了DNA如何告诉细胞构建其部分。）可知选D。

【2】题意：如果我们理解身体内部语言的一些“单词”，我们能做什么？考查细节理解。A. Make people get new jobs. 使人们得到新的工作；B. Make medicine for illnesses.制造治疗疾病的药物；C. Make maps of human. 制作人类地图；D. Make people less attractive.降低人们的吸引力。根据第3段最后一句和第4段第一句By understanding what just one “word” means, we can help save more people from several illnesses.（通过理解一个“词”的意思，我们可以帮助更多的人从几种疾病中解脱出来。）Most people hope that this will help make better medicine and help sick people.（大多数人希望这将有助于制造更好的药物和帮助病人。）可知“如果我们理解身体内部语言的一些“单词”，我们能制造治疗疾病的药物”；选B。

【3】题意：人们对这项工作怎么看？考查细节理解。A. It can cause good or bad results. 它可能导致好的或坏的结果；B. It can cause only good results. 它可能产生好的结果；C. It can cause good results but won’t work.它可能产生好的效果，但没有作用；D. It can cause only bad results.它可能导致不良后果。根据第4段“大多数人希望这将有助于制造更好的药物和帮助病人。其他人担心，当人们开始了解更多的词语并发现更多的其他信息时，我们可能会用错了方式，仅仅是为了让人们更有吸引力，或者阻止病人就业。如果不限制DNA技术的使用，人类将不得不遇到很多麻烦。”可知人们认为它可能导致好的或坏的结果；选A。