1 . I really don’t know why his latter discovery, _________ greater importance to science, is not so well-known to the world.

A．which I think is of	B．which I think it is of
C．of which I think it is	D．I think which is of

2 . I wish to thank Professor Smith, without _________ help I would never have got this far.

A．who

B．whose

C．whom

D．his

3 . I was told that there were about 50 foreign students         Chinese in the school, most        were from Germany.

A．studying; of whom	B．study; of whom
C．studying; of them	D．study; of them

4 . President Xi Jinping and his recent visit to UK, _______ was considered a big success may help increase people’s interest in traveling there.

A．who

B．that

C．which

D．where

5 . More and more college graduates, _______ the survey(调查) shows, feel it hard to find a nice job.

A．what

B．who

C．as

D．that

6 . Walter Disney, _______ money was now no problem, started a new film company.

A．for whose

B．for whom

C．for which

D．to which

7 . It is said that a most popular emoji (expression of emotion on the Internet) is the “face with the rolling eyes”, ________ is used in 14 percent of text messages.

A．that

B．what

C．which

D．whose

8 . The death of the closest relatives, ________ almost every one of us has experienced, always makes people feel bitter and unbearable.

A．which

B．who

C．as

D．the one

9 . ________ is known to us all, April 14, 2010 was the day ________ Yushu earthquake happened.

A．It; when	B．What; which
C．As; that	D．As; when

10 . _________ is mentioned above, the number of the students of senior high school is increasing.

A．Which

B．As

C．That

D．It