阅读下面的短文，根据所给首字母提示，用合适的单词填空。(10分)

Dear Peter:

I’m glad to receive your letter. Thank you for caring for the weather and my health. Now I’d like to tell you something a  小题1: the smog(雾霾)。

Since the winter last year, the smog has t 小题2: place for several times. It has done great harm to our d 小题3: life. Many traffic accidents happened just because of the heavy smog weather. More and more people have to go to see the d 小题4:  because of the serious disease caused by the smog. Quite a lot of flights have to be put off. A great number of people have to stay at h小题5: for fear of the poisonous air caused by smog.

People have realized the great harm caused by the smog and the importance of p小题6:

the environment. People from all over the country are taking actions to reduce the smog weather. The g小题7:  asks people to go to work or school with the public traffic, such as the bus and the u小题8:  . Also we should plant more trees.

According to me, I’ll go to school by bike or on foot, and I won’t throw the waste   a 小题9:.  In addition（另外），I will tell people that all of us should protect the environment as possibly  a小题10:   we can. Would you like to tell me some good ideas? I’m looking forward to your reply.

Yours,

Wang Hua

6、7、18、23、38、（ ）

A．47

B．53

C．62

D．76