Although the causes of cancer ____we do not yet have any practical way to preven - 高中英语试题 - 超级试练试题库

题目

题型：不详难度：来源：

Although the causes of cancer ____we do not yet have any practical way to prevent it.

A．are being uncovered	B．have been uncovering
C．are uncovering	D．have uncovered

答案

解析

考查被动语态。选项A是现在进行时的被动；选项B是现在完成进行时的主动语态；选项C是现在进行时的主动语态；选项D是现在完成时的主动语态。根据题意：虽然癌症的成因长在被揭示，但我们眼下还没有防止它的实用方法。故答案为A.

核心考点

试题【Although the causes of cancer ____we do not yet have any practical way to preven】；主要考察你对现在进行时等知识点的理解。[详细]

举一反三

5.―Have you handed in your schoolwork yet?
　―Yes，I have. I guess it ____ now.

A．has graded

B．is graded

C．is being graded

D．is grading

题型：不详难度：| 查看答案

一Have you handed in your schoolwork yet?
一Yes,I have.I guess it _____ now.

A．has graded	B．is graded
C．is being graded	D．is grading

题型：不详难度：| 查看答案

Since 1 won the big prize，my telephone hasn’t stopped ringing. People____to ask how I am going to spend the money.

A．phone	B．will phone
C．were phoning	D．are phoning

题型：不详难度：| 查看答案

let’s go out now. It _____ any more.

A．didn’t rain

B．doesn’t rain

C．won’t rain

D．isn’t raining

题型：不详难度：| 查看答案

— ________ for the glass! —It’s OK. I’m wearing shoes.

A．Look out	B．Walk out
C．Go out	D．get out

题型：不详难度：| 查看答案

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