He has made another wonderful discovery, __________of great importance to science.

A．which I think is

B．which I think it is

C．I think which is

D．of which I think it is

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参考答案

“which I think is”是“which”引导的一个非限定性定语从句，此处修饰“discovery”。故选A。此句意为：他已经创造了另外一个伟大的发现．我认为对科学是至关重要的。

1 ——Whose advice do you think I should take?
——__________.

A．That's OK

B．You are right

C．It's up to you

D．It's a secret

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2 Janet as well as the other young people who__________sent abroad by the government__________brought up in the small town.

A．was; was

B．was ; were

C．were; were

D．were ; was

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3 The guide then led us to a(n) __________bridge behind the palace.

A．Chinese old stone

B．old stone Chinese

C．Chinese stone old

D．old Chinese stone

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