Question

Sugar—free beets（甜菜）that still taste sweet, tastier tomatoes and brighter-colored fruits and vegetables that stay ripe（熟的）longer are all foods that are being grown now. How can they

carry traits, such as being tastier, brighter, and riper? They are genetically engineered.

Genetic engineering（基因工程）is like making a change in a recipe. For example, when you make cakes, you mix together all of the usual ingredients. If you add an extra ingredient, like salt, the cakes will taste differently.

Genes are ingredients in the recipe for life. They carry the traits of living things. Your genes dictate what color hair and eyes you’ll have, how tall you’ll be, as well as many other traits. Genes carry traits for plants, too. By adding genes to a plant, you can sometimes create new traits. For example, adding a certain gene to a potato plant can make the potato plant distasteful to bugs（蟲子）. This makes some farmers happy because they don’t have to use chemicals to keep bugs away from their plants.

It sounds great, but some people are opposed to the idea of food that is genetically engineered. Ronnie Cummins, from the Campaign for Food Safety, is against it. He says that one of the major concerns is allergies（過敏）. Supermarkets don’t always label foods that are genetically engineered. A customer could unknowingly buy food that has an added gene from another plant that he or she is allergic to. It could be dangerous.

Gary Burton from Monsanto, a seed（種子）company that engineers food, disagrees. He says his company tests for allergies. Burton believes that genetic engineering is a valuable tool for making better food. The technology can help farmers use less insecticide（殺蟲劑）and grow healthier crops. Burton thinks there are many advantages.

But Cummins says that we just don’t know what will happen in the future if we keep adding genes to foods. We could mistakenly create a monster.

People have different opinions about genetic engineering. One side supports it and thinks it will only help us. The other side is opposed to playing with nature and fears health risks. Which side do you think is right?

1.What could be a good thing about food that is genetically engineered?

A．It’s more expensive.

B．It could taste different.

C．It requires less insecticide.

D．It’s not labeled in the supermarket.

2.In general, who does not support the idea of genetic food?

A．People from seed companies.

B．Farmers who use engineered seeds.

C．People from the Campaign for Food Safety.

D．Scientists who create genetically engineered food.

3.It can be inferred that          .

A．growing genetic foods will make farmers richer

B．people will eat more genetic foods in the future

C．using fewer chemicals could make the food tastier

D．there could be unknown dangers about genetic foods

4.What is the best title of this passage?

A．Future Farming

B．Genetic Engineering

C．Foods with a Difference

D．Genetically Engineered Fruits

 

Answer 1

【答案】

1.C

2.C

3.D

4.B

【解析】

試題分析：這篇短文主要介紹了轉(zhuǎn)基因工程對于人類的影響，雖然他們對我們有一些很有幫助的影響，但是也存在一些不確定的危險因素。因此人們的觀點也有兩種相反的觀點。

1.根據(jù)第二段For example, adding a certain gene to a potato plant can make the potato plant distasteful to bugs（蟲子）. This makes some farmers happy because they don’t have to use chemicals to keep bugs away from their plants.描述可知，轉(zhuǎn)基因植物需要更少的農(nóng)藥，故選C。

2.根據(jù)第四段It sounds great, but some people are opposed to the idea of food that is genetically engineered. Ronnie Cummins, from the Campaign for Food Safety, is against it.描述可知選C。

3.根據(jù)But Cummins says that we just don’t know what will happen in the future if we keep adding genes to foods. We could mistakenly create a monster.描述可知對于轉(zhuǎn)基因食品還存在很多不確定的危險，故選D。

4.這篇短文主要描述了基因工程對于食品方面的影響。故選B。

考點：關(guān)于基因工程的議論文

點評：本文中長句較多，生僻詞也較多，一時很難讀懂句子含義，注意多讀幾遍，不要強求非得理解一詞一句的含義，能把握文章大意就行。然后帶著問題閱讀短文，一般就能順利找出答題依據(jù)。對于不能直接找到根據(jù)的問題注意聯(lián)系上下文，根據(jù)短文中心總結(jié)出正確答案。