閱讀理解：
      Mrs Green was the head of a large company，and she often had to have meetings with other people at the meeting，so she often found the air was so bad during the meetings．One day，after an hour，she got much pain in her body．So she called a big air-condition company and asked them to work out how much it would cost to keep the air of the meeting room really clean．After a few days the air-condition company sent in two ways for Mrs Green to choose from．One was for 5，000 pounds to put in new air-condition，and the other was for 5 pounds for a sign which said， "NO Smoking．"

（1）What did Mrs Green do？

B

B

．
A．A worker．
B．A leader．
C．A house woman．
D．An officer．
（2）What did she often have to do with other people in the room in the building？

D

D

．
A．She often had dinner with them．
B．She often played games with them．
C．She often smoked with them．
D．She often had meetings with them．
（3）The air was so bad during the meetings because of smoking，wasn't it？

A

A

．
A．Yes，it was．
B．No，it wasn't．
C．Yes，it wasn't．
D．No，it was．
（4）Why did she called a big air-condition company？

C

C

．
A．Because she wanted to know how much it would cost．
B．Because she wanted to keep the air of the meeting room really clean．
C．Because she got much pain in her body．
D．A，B and C．
（5）Which sentence is true？

B

B

．
A．The air-condition company sold her an air-condition at last．
B．She didn't buy an air-condition because it was too dear．
C．An air-condition cost 5000 dollars and the sign cost 5 dollars．
D．She paid 5 dollars for a sign．