Question

【题目】 Today there are more than 6 million 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 lowly. 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, for example, which stops people from becoming blind.

Rich countries produce GM foods 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】What does the underlined word “GM foods” in paragraph 2 mean?

A.Genetic material of a plantB.Genetic material

C.DiseasesD.Genetically modified foods

【2】How many people will there be by the year 2050?

A.6 billion.B.Perhaps 12.5 billion.

C.Less than 6 billion.D.We have no idea.

【3】Does anyone know how good or bad GM foods are?

A.No, no one knows.B.Yes, no one does.

C.No, someone does.D.Yes, someone knows.

【4】Why do rich countries produce GM foods?

A.Because they work very slowly.

B.Because poor countries are not interested in this kind of foods.

C.Because GM foods are easy to grow and bring in more money.

D.Because GM plants are not natural.

【5】The best title of this passage is ________.

A.Dolphin’s life and foodB.Amy’s job at a marine park

C.Education in parkD.GM foods

Answer 1

【答案】

【1】D

【2】B

【3】A

【4】C

【5】D

【解析】

这篇短文主要讲述转基因问题。文章指出，转基因可以使植物增强抗病能力，也可以对人类疾病有帮助。同时指出，转基因植物非自然生长，其好坏尚不可知。

【1】词义猜测题。根据文章第二段“Foods from plants grown in this way are called genetically modified foods (转基因食品), or GM foods. 这种方式生长的植物的食物被称为转基因食品（转基因食品），或转基因食品。”“GM”即“genetically modified”的缩写。故答案为D。

【2】细节理解题。根据文中第一段“By the year 2050 there may be 12.5 billion. 到2050年可能有125亿”，A. 6 billion 6亿；B. Perhaps 12.5 billion.大概125亿；C. Less than 6 billion.少于60亿；D. We have no idea.我们不知道。故答案为B。

【3】细节理解题。根据文章最后一段中的“No one knows how good or bad they are. 没有人知道他们生产转基因食品有多好或有多坏”可知没有人知道转基因食品是好还是坏。故答案为A。

【4】细节理解题。根据文章最后一段“Rich countries produce GM foods because they are easy to grow and bring in more money.富裕国家生产转基因食品是因为它们很容易生长并带来更多钱。”故答案为C。

【5】文章标题题。A. Dolphin’s life and food海豚的生活和食物；B. Amy’s job at a marine park艾米在海洋公园的工作；C. Education in park公园教育；D. GM foods转基因食物；通读全文可知，本文主要讲述的是转基因食物。故答案为D。

词义猜测题是阅读理解中常见的一种题型，所猜测词汇可以是生词，也可以是熟词新义，还可以是人称代词的指代内容。词义猜测题主要考查考生根据上下文推测词义和语义的能力，突出考查对语境的分析和把握能力。常见的猜词法有：（1）利用上下文语境。猜测任何词义都离不开上下文，所以要借助上下文对需要猜测的词或短语进行合乎逻辑的推测。

（2）利用定义或解释性的线索。阅读文章中的有些生词往往在其后会有对该词进行解释说明的短语或句子，利用它们猜词义较容易。

（3）利用文章的逻辑关系答题。如并列、对比、因果、转折关系等。这些逻辑关系往往通过一些相应的词或短语表达出来，如文中出现的but, or, however, so, because等。

（4）利用构词法知识答题。熟记一些前缀、后缀所表达的意思，不仅可以扩大词汇量，而且帮助我们猜测词义。第1小题的词义猜测题就是利用第1种解题方法。