With the help of high technology, more and more new substances ______ in the pa - 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 years.

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

答案

解析

时态和语态。由句中的时间状语in the past years可知，空格应填现在完成时；又因句子中的主语new substances与discover为被动关系，故选D项。

核心考点

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

举一反三

– Do you think we should accept that offer?
-- Yes, we should, for we ___such bad luck up till now, and time __ out.

A．have had; is running	B．had; is running
C．have; has been run	D．have had; has been run

题型：不详难度：| 查看答案

We first met on a train in 2000. We both felt immediately that we ______ each other for years.

A．knew

B．have known

C．have known

D．know

题型：不详难度：| 查看答案

Over the past decades, sea ice _____ in the Arctic as a result of global warming.

A．had decreased

B．more than

C．attach

D．apply

题型：不详难度：| 查看答案

－ What do you think of the movie?
－ It’s fantastic. The only pity is that I __________ the beginning of it.

A． Missed

B．had missed

C．miss

D．would miss

题型：不详难度：| 查看答案

—How can I apply for an online course?
—Just fill out this form and we _______ what we can do for you.

A．see

B．are seeing

C．have seen

D．will see

题型：不详难度：| 查看答案

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