E.Instead, you can set an example by following these common airplane courtesies (礼貌)．

　　F.It is not polite to talk loudly in the aircraft.

　　G.If using electronic gadgets (小装置), keep the volume down.

　　答案：1～5　 EDBGC

　　Ⅴ.短文改错

　　A terrible storm took place in a summer night.The wind was so strong that many trees brought down.It was already eleven o'clock.Li Ming, who had been to night school, was still not back and her parents were very anxious.Half an hour late the wind stopped, and it was still raining.Li Ming's parents were about to looking for him when he returned.Li Ming explained the storm has pushed over many big trees as well telephone lines, blocking the roads and that the bridge had been washed away by the floods.So they had been to find another way back.

　　答案：第一句：in→on

　　第二句：trees后加were

　　第四句：been→gone; her→his

　　第五句：late→later; and→but

　　第六句：looking→look

　　第七句：has→had; well后加as

　　第八句：去掉been