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问题 选择题

据《重庆经济报》2004年4月22日报道，今年我国要确保粮食产量达到4 550亿千克．则该产量用科学记数法表示正确的是 [ ]

A．4.55×103亿千克

B．0.455×104亿千克

C．45.5×102亿千克

D．455×10亿千克

答案

答案：A

填空题

“安全管理证书”系指签发给船舶，表明其公司和船上管理已按照认可的（）运行的证明文件。
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选择题

从A、B、C、D四个选项中，选择与所给句子画线部分意义相同或相近并能替代的那一项。

1. —How many times have you been to Beijing, Li Lei?

    —Several times.

A. many

B. a lot of

C. a few

D. much

2. —You should think it over before making a decision.

    —Thanks. I will.

A. think about it

B. think it of

C. go over it

D. consider it

3. —Everyone is supposed to care for wild animals.

   —Yes, they are our friends.

A. may

B. must

C. should

D. can

4. —What time will you arrive at the airport?

    —In two hours.

A. reach

B. get

C. reach to

D. leave

5. —What do you think of Chinese food?

    —It's very delicious.

A. How do you think

B. How do you like

C. What's your favorite

D. What do you like

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