题文

阅读理解。

Today there are 6 billion people on the earth. By the year 2050 there may be 12.5 billion. This means we need more food.      One way to produce more food is by growing stronger plants. For thousands of years, farmers have made plants better. Every season, they pick the best plants for the next season. It works very slowly. Since 1983, scientists have been able to change plants more quickly by changing their genetic material (遗传物质). Foods from plants grown in this way are called genetically modified foods (转基因食品), or GM foods.      By changing the genetic material of a plant, it is possible to make new plants. They make plants which are strong against plant diseases. They can also help in our diseases: a kind of rice is being prepared (准备), for example, which stops people from becoming blind.      Rich countries produce GM food because they are easy to grow and bring in more money. Poor countries are interested in them because they help produce more food.      GM plants are not natural. No one knows how good or bad they are. Making GM foods is only one way of feeding people in 2050. There are strong feelings against them, because they are unnatural. They may feed people, then hurt them or their children later. But, both rich and poor countries are very interested in their use, and they are not going to go away. In 2050 we may think differently about them.

1. GM foods are made by _____.

A. farmers B. workers C. scientists D. plants

2. What are the good things about GM foods?

A. They make plants strong against diseases. B. They are unnatural. C. They can help in human diseases. D. Both A and C.

3. GM foods _____.

A. are a quick way to produce food B. grow in the wild C. are safe D. are grown only in rich countries

4. Why do some people not like GM foods?

A. They are not useful. B. They are not helpful. C. They are not natural. D. They are not cheap.

5. From the reading we know that _____.

A. GM foods will disappear one day in the future B. GM foods will not disappear in the future C. people will not be interested in GM food D. people will have to stop using GM food

题型：阅读理解  难度：中档

答案

1-5 CDACB

据专家权威分析，试题“阅读理解。 Today there are 6 billion people on the earth. B..”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。