1 . He has made a discovery, _________ of great importance to the progress of science and technology．

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

2 . The “new” Japanese prime Minister Shinzo Abe wants the USA to promise _________ Japan declares war against China, the USA will give military aid, __________ promises to be impossible.

A．if; which	B．whether; it
C．if; that	D．when; it

3 . A strange girl entered the room and told me a story of her own, _____ I suspected the truth．

A．that

B．which

C．of which

D．at which

4 . By now, we have raised 50.000 pounds for the poor children, ______ is quite unexpected.

A．that

B．which

C．who

D．it

5 . He made another wonderful discovery, ________ of great importance to science.

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

6 . His new car, ________ he paid 7,000pounds, has already had to be repaired.

A．on which	B．on that
C．for that	D．for which

7 . Advertising can influence consumers' moods，_____ in turn，can influence consumers’reactions to products．

A．that

B．which

C．where

D．when