题文

阅读理解

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. When did we first know why we look like other people in our family?

A. In 1860.           B. In 1953.             C. In 1961.             D. In 2000.

2. What does the underlined word "gene" mean?

A. The "map" of DNA.                       B. A special language. C. Small parts of DNA.                       D. DNA.

3. 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.

4. 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.

5. What do people think about this work?

A. It can cause good or bad resutls.             B. It can cause only good results.   C. It can cause good results but won’t work.       D. It can cause only bad results.

题型：阅读理解  难度：中档

答案

1-5 A C D B A

据专家权威分析，试题“阅读理解On June 26, 2000, two scientists, called Francis Col..”主要考查你对  科教类阅读  等考点的理解。关于这些考点的“档案”如下：

科教类阅读

考点名称：科教类阅读

• 科普类的阅读：
  科普类的阅读理解包含介绍科学知识、社会知识的短文。阅读这类短文时，要以事实为中心进行思考，抓住事物的特征、用途、相互关系等。
  如果是介绍社会现象的文章，要掌握所谈现象的内涵。

• 答题技巧：
  1. 加强整体意识，把握文章的主要内容。在阅读的时候可给段落标上序号，并给重要的句子和
     关键词做上记号，尤其是各段中心句，为答题提供更快捷更多的信息源。
  2. 审清题干，发觉和把握试题中有效的提示性信息，确认命题的角度、阅读范围和答题方式。
  3. 定位阅读，强化对应意识。同时要注意原文利用和自我加工相结合。