Question

You may know the saying: An apple a day keeps the doctors away. A recent study by the Chinese University of Hong Kong has discovered another saying: An apple a day keeps old age away.

The study involved fruit flies, as they share many genes with humans. Researchers gave one group of fruit flies normal food, and another group of fruit flies got the same food including apple.

The results showed that flies that ate apple lived an average of 55 days longer than the flies that didn’t eat apple. The study also found that apple-eating flies were more able to walk, climb and move about as they became old, the Journal of Agricultural and Food Chemistry reports.

The researchers believe that the antioxidants (抗氧化剂) found in apples are good for health.

In another experiment, researchers studied the diets of thousands of women. They found that those women who often ate apples were 20 percent less likely to have a heart attack.

Scientists have recently discovered the apple’s genetic code. This allows scientists to make new kinds of fruit that are healthier. Researchers are already using this information to grow apples with added antioxidants. Antioxidants help to keep eyes and joints (关节) healthy and protect against heart attacks and cancer.

Apples that help people lose weight may be in supermarkets in just four or five years. They are said to be “extra healthy” apples that can stop people from overeating.

1.Fruit flies were used in the research because_______.

A. they are very easy to catch    B. they are fond of eating apples

C. they can live longer than before    D. they share similar genes with humans

2.By studying the diets of many women, researchers _______.

A. found they are healthier than men

B. helped them lose weight successfully

C. discovered the genetic code of the apple

D. proved apples were good for people’s health

3.From the story, we can infer that _____.

A. scientists are studying new types of apples

B. apples’ genetic code is similar to other fruits

C. women like to eat apples more often than men

D. people who eat apples are protected from heart disease

Answer

1.D

2.D

3.A

【解析】本文叙述的是吃苹果有益健康。一天一个苹果，疾病远离我，可最近一项研究表明，一天一个苹果，有助于抗老化。

1.D

细节理解题。根据第二段第一句The study involved fruit flies, as they share many genes with humans. 这项研究涉及果蝇，因为它们与人类有许多相似的基因。故选D。

2.D

细节理解题。根据第四段第一句The researchers believe that the antioxidants (抗氧化剂) found in apples are good for health.可知苹果对人的健康是有好处的。故选D。

3.A

推理判断题。根据最后一段最后一句They are said to be “extra healthy” apples that can stop people from overeating.可知科学家正在研究一种新型的苹果。故选A。

【名师点睛】

做推理判断题时要善于抓住某一段话中的关键信息，即某些关键词或短语去分析、推理、判断，利用逆向思维或正面推理，从而推断出这句话所隐含的深层含义。本题第3小题，根据最后一段最后一句They are said to be “extra healthy” apples that can stop people from overeating.可知科学家正在研究一种新型的苹果。故选A。