With the help of high technology, more and more new substances ___in the past fe - 高中英语试题 - 超级试练试题库

题目

题型：不详难度：来源：

With the help of high technology, more and more new substances ___in the past few years.

A．discovered	B．have discovered
C．had been discovered	D．have been discovered

答案

解析

试题分析：考查时态。根据时间状语in the past few years,说明使用现在完成时。根据句意说明使用被动形式。句意：因为有高科技的帮助，早最近几年中，越来越多的物质已经被发现了。故D正确。
点评：对于时态的考查要从关键词着手，也要在语境中进行。

核心考点

试题【With the help of high technology, more and more new substances ___in the past fe】；主要考察你对一般现在时等知识点的理解。[详细]

举一反三

–Why, Jack, you look so tired!
--Well, I ___the house and I must finish the work tomorrow.

A．was painting	B．will be painting
C．have painted	D．have been painting

题型：不详难度：| 查看答案

The mother didn"t know who the glass because it happened when she was out.

A．break

B．has broken

C．had broken

D．breaks

题型：不详难度：| 查看答案

Betty and Arthur ____ on separate holidays in a few days’ time.

A．go

B．going

C．are going

D．went

题型：不详难度：| 查看答案

They became friends again that day. Until then, they _____ to each other for nearly two years.

A．won"t speak	B．haven"t spoken
C．hadn"t spoken	D．haven"t been speaking

题型：不详难度：| 查看答案

—Did you notice my little son just now?
—No, Mrs Black. I ______ computer games.

A．play

B．am playing

C．would play

D．was playing

题型：不详难度：| 查看答案

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