Question

【題目】

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 (細胞) 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.

根據(jù)短文內(nèi)容，選擇最佳答案。

【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】

本文簡單介紹了科學(xué)家對DNA的研究歷程。大多數(shù)人希望這將有助于制造更好的藥物救治生病的人。其也有人擔心這可能會帶來一些不好的結(jié)果。

【1】題意：1961年這兩位科學(xué)家首次發(fā)現(xiàn)了什么？考查細節(jié)理解。A. The “map” of DNA.：DNA的“地圖”；B. A new illness：一種新的疾��；C. The language of DNA.：DNA的語言；D. A message of DNA：DNA的信息。根據(jù)第3段第1句In 1961, Marshall Nirenberg and Johann Matthaei found a message in DNA showing how DNA tells the cell (細胞) to build its parts.（1961年，MarshallNirenberg和Johann Matthaei在DNA中發(fā)現(xiàn)了一條信息，顯示了DNA如何告訴細胞構(gòu)建其部分。）可知選D。

【2】題意：如果我們理解身體內(nèi)部語言的一些“單詞”，我們能做什么？考查細節(jié)理解。A. Make people get new jobs. 使人們得到新的工作；B. Make medicine for illnesses.制造治療疾病的藥物；C. Make maps of human. 制作人類地圖；D. Make people less attractive.降低人們的吸引力。根據(jù)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.（通過理解一個“詞”的意思，我們可以幫助更多的人從幾種疾病中解脫出來。）Most people hope that this will help make better medicine and help sick people.（大多數(shù)人希望這將有助于制造更好的藥物和幫助病人。）可知“如果我們理解身體內(nèi)部語言的一些“單詞”，我們能制造治療疾病的藥物”；選B。

【3】題意：人們對這項工作怎么看？考查細節(jié)理解。A. It can cause good or bad results. 它可能導(dǎo)致好的或壞的結(jié)果；B. It can cause only good results. 它可能產(chǎn)生好的結(jié)果；C. It can cause good results but won’t work.它可能產(chǎn)生好的效果，但沒有作用；D. It can cause only bad results.它可能導(dǎo)致不良后果。根據(jù)第4段“大多數(shù)人希望這將有助于制造更好的藥物和幫助病人。其他人擔心，當人們開始了解更多的詞語并發(fā)現(xiàn)更多的其他信息時，我們可能會用錯了方式，僅僅是為了讓人們更有吸引力，或者阻止病人就業(yè)。如果不限制DNA技術(shù)的使用，人類將不得不遇到很多麻煩�！笨芍�人們認為它可能導(dǎo)致好的或壞的結(jié)果；選A。