C’est promis : je vous appellerai dès que

元旦期间，一个小组有若干人，他们之间互送贺卡一张，已知全组共送贺卡132张，则这个小组共有（    ）人

A．11

B．12

C．13

D．14

请根据对话内容，在下面的空白处填入适当的词，使对话完整与正确，并将答案填在答题卷相应的横线上。每空一词。

A: It’s a __小题1:___ day. We can go out to play.

B: Yes. But I’d like to stay at home.

A: It’s not  ___小题2:____ for your health without playing sports for a long time.

B: Where do you think we should go then?

A: What about going to the East Lake this afternoon? It’s a great place for __小题3:___.

B: And you have got ready for it,  ____小题4:____  you?

A: Yes. I have invited other friends. If you like, go ____小题5:___ us.

B: OK. Thanks! See you then.

工作i-j自由时差正确计算为( )。

A．FF_i-j=LS_i-j-ES_i-j

B．FF_i-j=ES_j-k-EF_i-j

C．FF_i-j=ES_j-k-ES_i-j-D_i-j

D．FF_i-j=LF_i-j-EF_i-j

E．FF_i-j=LS_i-k-LS_i-j

下列哪种方法常用来保存磁痕显示图形（）

A．贴印

B．橡胶铸型复印

C．照相

D．以上全