1 . A good advertisement, ________ people attach positive meanings to, can contribute to the sales of a product.

A．that

B．which

C．to which

D．whose

2 . The tsunami ruined the holiday, _______made many of the citizens change their travel plans.

A．it

B．that

C．for

D．which

3 . Recently I bought an ancient Chinese vase, ________ was very reasonable.

A．which price

B．the price of which

C．its price

4 . Is this the reason ________ he refused our offer?

A．on which

B．in which

C．for which

D．from which

5 . The number of smokers, ________ is reported, has dropped a lot.

A．which

B．that

C．it

D．as

6 . This gift was the Amber Room, ________ was given this name because several tons of amber were used to make it.

A．that

B．which

C．why

D．what

7 . Tu Youyou was awarded the Nobel Prize, ________ is considered one of the highest international honours a person can receive.

A．that

B．what

C．which

D．where

8 . The first trial of this medicine took place in 1899, _______ the company, _______ Hoffmann worked, began distributing（分发；分配） the medicine in powder（粉末） form to physicians to use with patients.

A．when; which

B．when ; for which

C．which; in which

D．which; where

9 . ______is often the case, whoever hangs on in any adversity will succeed some day.

A．Why

B．What

C．That

D．As

10 . The factory produces half a million pairs of shoes every year, 80%_________are sold abroad.

A．of which

B．which of

C．of them

D．of that