It is pretty well understood __________controls the flow of carbon dioxide in an - 高中英语试题 - 超级试练试题库

题目

题型：不详难度：来源：

It is pretty well understood __________controls the flow of carbon dioxide in and out the atmosphere today.

A．that

B．when

C．what

D．how

答案

解析

主要测试主语从句。分析句子结构可知：句子属于形式主语格式；另外主句中缺少主语。双重作用的引导词只能是what。例如：It is still doubtful what he said at the meeting yesterday。昨天他在会上说的话仍然值得怀疑。

核心考点

试题【It is pretty well understood __________controls the flow of carbon dioxide in an】；主要考察你对句法等知识点的理解。[详细]

举一反三

There is a new problem involved in the popularity of private cars ____________ road conditions need ____________.

A．that; to be improved

B．which; to be improved

C．where; improving

D．when; improving

题型：不详难度：| 查看答案

______ made the school proud was ______ more that 90% of the students had been admitted to key universities.

A．What…because

B．What…that

C．That…what

D．That…because

题型：不详难度：| 查看答案

The road is covered with snow. I can’t understand ________ they insist on going by motor-bike.

A．why

B．whether

C．when

D．how

题型：不详难度：| 查看答案

A modern city has been set up in ________ was a wasteland ten years ago .

A．what

B．which

C．That

D．where

题型：不详难度：| 查看答案

After Yang Li Wei succeeded in circling the earth, _______ our astronauts desire to do is walk in space.

A．where

B．what

C．that

D．How

题型：不详难度：| 查看答案

最新试题

热门考点