试题与答案

霉变的花生、玉米等产品中可能存在()致癌物。A、杂环胺类 B、多环芳烃类 C、亚硝酸盐类

题型:单项选择题

题目:

霉变的花生、玉米等产品中可能存在()致癌物。

A、杂环胺类

B、多环芳烃类

C、亚硝酸盐类

D、黄曲霉毒素

答案:

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      Before you go to another country, it is great help if you know the language and some of the customs (风俗)

of the county. 

     When people meet each other for the first time in Britain, they say "How do you do?" and shake hands.

Usually they do not shake hands when just meet or say goodbye. But they shake hands after they haven't met

fot a long time or when they will be away from each other for a long time.

      Last year a group of German students went to England for a holiday. Their teacher told them that the English

people hardly shake hands. So when they met their English friends at the station, they kept their hands behind

their backs. The English students had learned that German people shake hands as often as possible. So they put

their hands in front and got ready to shake hands with them. It make both of them laugh.

1. It is              if you know the language and some of the customs of the country.[ ]

A. not useful

B. not helpful

C. very helpful

D. very bad

2. English people usually shake hands when they             . [ ]

A. meet every time

B. meet for the first time

C. say goodbye to each other

D. say hello to each other

3. Usually English people don't shake hands when they             . [ ]

A. when they will be away for a long time

B. when they say "How do you do?"

C. when they just meet or say goodbye

D. after they haven't met for a long time

4. Which is right (正确的)? [ ]

A. German people shake hands as often as possible.

B. English people like shaking hands very much.

C. German people hardly shake hands

D. Neither English people nor Germans like shaking hands.

5. This story is about             . [ ]

A. shaking hands

B. languages

C. customs

D. languages and customs

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