Question

【題目】 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 (遺傳物質(zhì)). Foods from plants grown in this way are called genetically modified foods (轉(zhuǎn)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】

這篇短文主要講述轉(zhuǎn)基因問題。文章指出，轉(zhuǎn)基因可以使植物增強抗病能力，也可以對人類疾病有幫助。同時指出，轉(zhuǎn)基因植物非自然生長，其好壞尚不可知。

【1】詞義猜測題。根據(jù)文章第二段“Foods from plants grown in this way are called genetically modified foods (轉(zhuǎn)基因食品), or GM foods. 這種方式生長的植物的食物被稱為轉(zhuǎn)基因食品（轉(zhuǎn)基因食品），或轉(zhuǎn)基因食品�！薄�GM”即“genetically modified”的縮寫。故答案為D。

【2】細節(jié)理解題。根據(jù)文中第一段“By the year 2050 there may be 12.5 billion. 到2050年可能有125億”，A. 6 billion 6億；B. Perhaps 12.5 billion.大概125億；C. Less than 6 billion.少于60億；D. We have no idea.我們不知道。故答案為B。

【3】細節(jié)理解題。根據(jù)文章最后一段中的“No one knows how good or bad they are. 沒有人知道他們生產(chǎn)轉(zhuǎn)基因食品有多好或有多壞”可知沒有人知道轉(zhuǎn)基因食品是好還是壞。故答案為A。

【4】細節(jié)理解題。根據(jù)文章最后一段“Rich countries produce GM foods because they are easy to grow and bring in more money.富裕國家生產(chǎn)轉(zhuǎn)基因食品是因為它們很容易生長并帶來更多錢。”故答案為C。

【5】文章標題題。A. Dolphin’s life and food海豚的生活和食物；B. Amy’s job at a marine park艾米在海洋公園的工作；C. Education in park公園教育；D. GM foods轉(zhuǎn)基因食物；通讀全文可知，本文主要講述的是轉(zhuǎn)基因食物。故答案為D。

詞義猜測題是閱讀理解中常見的一種題型，所猜測詞匯可以是生詞，也可以是熟詞新義，還可以是人稱代詞的指代內(nèi)容。詞義猜測題主要考查考生根據(jù)上下文推測詞義和語義的能力，突出考查對語境的分析和把握能力。常見的猜詞法有：（1）利用上下文語境。猜測任何詞義都離不開上下文，所以要借助上下文對需要猜測的詞或短語進行合乎邏輯的推測。

（2）利用定義或解釋性的線索。閱讀文章中的有些生詞往往在其后會有對該詞進行解釋說明的短語或句子，利用它們猜詞義較容易。

（3）利用文章的邏輯關(guān)系答題。如并列、對比、因果、轉(zhuǎn)折關(guān)系等。這些邏輯關(guān)系往往通過一些相應(yīng)的詞或短語表達出來，如文中出現(xiàn)的but, or, however, so, because等。

（4）利用構(gòu)詞法知識答題。熟記一些前綴、后綴所表達的意思，不僅可以擴大詞匯量，而且?guī)椭�我們猜測詞義。第1小題的詞義猜測題就是利用第1種解題方法。