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

题目

题型：上海高考真题难度：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

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试题【With the help of high technology, more and more new substances _____ in the past】；主要考察你对被动语态等知识点的理解。[详细]

举一反三

Though we don"t know what is discussed, yet we can feel the topic _______.A. had changed
B. will change
C. was changed
D. has been changed

题型：陕西省高考真题难度：| 查看答案

In recent years many football clubs _____ as business to make a profit.
A. have run
B. have been run
C. had been run
D. will run

题型：上海高考真题难度：| 查看答案

More patients _____ in hospital this year than last year.
A. treated
B. have treated
C. had been treated
D. have been treated

题型：江苏高考真题难度：| 查看答案

— The window is dirty.
— I know. It _____ for weeks.
A. hasn"t cleaned
B. didn"t clean
C. wasn"t cleaned
D. hasn"t been cleaned

题型：高考真题难度：| 查看答案

When and where to enjoy our summer vacation _____ yet.

[ ]

A. aren"t decided
B. isn"t being decided
C. hasn"t been decided
D. haven"t been decided

题型：专项题难度：| 查看答案

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