题目内容

Great as Newton was, many of his ideas ________________ today and modified by the work of scientists of our time.

A. are to challenge
B. have challenged
C. have been challenged
D. are challenging

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We __________________ to start our own business, but we never had enough money.

A. have hope
B. hope
C. had hoped
D. should hope

16. He took down a square green bottle, ____________________ he poured into a dish.

A. its content
B. which content
C. the contents of which
D. the content of that

17. Once a class does not need to move at a ______________ pace , students can learn different things rather than all learning the same thing.

A. frequent
B. hasty
C. uniform
D. settled

He studied English in prison from a teach-yourself book, but he has never heard a word of it ______________.

A. speaking
B. spoken
C. to speak
D. to be spoken

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