壁胸膜和脏胸膜（）。 A.在胸膜顶处移行 B.在肺裂处移行 C.在肺根处移行 D.在

阅读短文，回答问题。

     What do you do to relax? Do you watch TV? Do you read a book? Or do you listen to music? How

many of us actually play a musical instrument? How many of us go to concerts? How important is music

in our lives? What kind of music do we like?

     The survey above shows the musical habits of a few of our readers. Interestingly, fourteen people

out of the twenty questioned actually play a musical instrument, while only six people don't. Out of these,

ten people practice their musical instrument between 0-3 hours a week and the other four between three

and six hours a week.

     The best instrument to play is the guitar; eight people say it is their favourite instrument to play.

Another four people like playing the piano and two like playing the violin. Two people, however,

don't like playing the violin or the piano as they think they are too difficult.

     Pop concerts are always popular but, in this survey only eight people say they like going to concerts,

six to pop concerts and two to jazz concerts.

     A higher number, eighteen, say they like listening to music as they find it relaxing. Only two people

don't like listening to music at all. These results seem to suggest that we are more actively musical than

we think ...

1. How many of the twenty people don't play a musical instrument?

_____________________________________________________ .

2. How many of the fourteen people like playing the guitar?

_____________________________________________________ .

3. Why don't the two people like playing the violin or the piano?

_____________________________________________________ .

4. Do most people like listening to music?

_____________________________________________________ .

恩格尔系数下降，表明

①食品支出在家庭总支出中的比重下降

②人们生活水平提高，消费结构改善

③居民消费结构日益合理

④居民发展资料消费和享受资料消费已占主体

A．①②③

B．②③④

C．①③④

D．①②④

证券经纪商可以将客户股票借给他人作担保物．

CIF LANDED______支付卸船费。

A．买方

B．卖方

C．收货人

D．发货人

简述炽灼残渣的定义及其检查时的注意事项。