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问题 选择题

建国以来，我国农村生产关系的变革和调整经历了四个步骤，依次是

①土地改革 ②人民公社化  ③农业合作化  ④家庭联产承包责任制

A．①②③④

B．①③②④

C．①④②③

D．③①④②

答案

答案：B

单项选择题

In the following essay, each blank has four choices. Choose the best answer and write down on the answer sheet. Communicating via e-mail is by far the most common Intemet activity. You can （）with anyone in the world who has an Intemet address or e-mail （）with a system connection to the Internet. All you need is （）the Internet and an e-mail program. Two of the most widely used e-mail programs are Microsoft’s （） and Netscape’s Navigator. A typical e-mail message has three basic （）: header, message, and signature.

You can （）with anyone in the world.

A．connect

B．exchange

C．communicate

D．game
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单项选择题

地球绕太阳公转的速度是30km/s，我们课间休息10分钟内，实际上相当于绕太阳运行了（）

A.18000m

B.0

C.300km

D.18000km
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