Some of the heat near the surface of the earth _____ electricity.A．is used to m

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Some of the heat near the surface of the earth _____ electricity.

A．is used to making	B．are used for making
C．is used to make	D．are used to make

答案

解析

略

举一反三

In this institution, a medal, together with a prize of a certain sum of money, ________ does best in science and technology every two years.

A．is given to whoever	B．are given to anyone
C．are given to who	D．is given to whom

题型：不详难度：| 查看答案

第二部分: 英语知识运用 (共两节, 满分35分)
第一节：单项选择 (共15小题；每小题1分, 满分15分)
请认真阅读下面各题, 从题中所给的A、B、C、D四个选项中, 选出最佳选项, 并在答题纸上将该项涂黑。
Every possible means ________ tried but the problem remains unsolved.
A. has been B. have been C. are D. is

题型：不详难度：| 查看答案

As I know, it is five years since Mary ____ in the south.

A．lives

B．lived

C．has lived

D．was living

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So long as Peter goes all out to do the work, I don"t mind how long it _____ him to complete it.

A．took

B．will take

C．take

D．takes

题型：不详难度：| 查看答案

Recently Peter________to do his homework, and instead insists on wasting his time playing com-puter games, which extremely annoys his father.

A．had been refusing

B．has been refusing

C．was refusing

D．refused

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