阅读理解 Solid proof is rising that drinking tea can prevent cell damage that leads to cancer, heart disease and perhaps other ills, scientists said on Tuesday. It may soon be time to add tea to the list 题目和参考答案——青夏教育精英家教网—

阅读理解

　　Solid proof is rising that drinking tea can prevent cell damage that leads to cancer, heart disease and perhaps other ills, scientists said on Tuesday.

　　It may soon be time to add tea to the list of fruits and vegetables that experts advise Americans to eat as often as possible to reduce their risk of disease, the researchers told a meeting hosted by the U. S. Department of Agriculture, the Teas Council, the American Cancer Society and other groups.

　　“In some respects, it is good to think of it as a plant food,” Jeffrey Blumberg, a nutritionist(营养学家)at Tufts University in Boston, told a news conference.

　　Blumberg said tea is full of phytochemicals(植物化学)－a wide range of molecules that can act as antioxidants(防老化剂). Such compounds work against the damage done to DNA cells by free radicals (原子团)produced by sunlight, chemicals, many foods and simply the stress of day－to－day living.

　　Damaged DNA is the first step to cancer, and is also related to heart disease.

　　Vitamins such as A and C are antioxidants, but so are compounds such as the catechins(儿茶酚)found in tea.

　　“It's taken about 30 years to fully appreciate the importance of these compounds,” Blumberg, who acts as an adviser to both the U. S. Food and Drug Administration and the Tea Council, said.

　　The USDA reported on a study suggesting that tea － drinking can also reduce the risk of heart disease by lowering cholesterol(胆固醇).

1．Why may tea reduce risk of cancer and heart disease according to this passage?

[　　]

A．Because tea is very popular with the world

B．Because tea is a kind of plant food

C．Because tea contains Vitamin A and Vitamin C as well as the catechins

D．Because tea contains healthy DNA cells

2．The main purpose of this article is ________.

[　　]

A．to advise people to drink tea

B. to advise people to buy tea

C．to tell people to sell tea to make a fortune

D．to advise people to plant more tea

3．Which of the following agrees with the content of the passage?

[　　]

A．Drinking tea can kill the damaged DNA cells

B．If a person keeps drinking tea, he or she will never suffer heart disease

C．Scientists didn't understand the importance of antioxidants until 30 years ago

D．Antioxidants can prevent DNA cells from being damaged

答案：C;A;D
解析：

　　1．C　　这是一道综合理解题。喝茶之所以能够减少癌症和心脏疾病的发病率是因为茶叶里含有防老化剂。而维生素A和维生素C以及儿茶酚都属于防老化剂，故而C正确。

　　2．A　　这是一道综合理解题。该文的主题便是讲喝茶对人健康的好处。A符合题意。

　　3．D　　这是一道综合理解题。防老化剂的作用就是保护人体中DNA细胸不受损坏。考生很容易错选B项。该选项的表达太绝对化了。

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