A: Hey, Peter, what’s wrong?

B: I had a fight with my best friend. What _小题1:_____ I do?

A: Well, you could write him a letter.

B: I don’t think so, although it’s a good _小题2:____. I ’m just not very good at writing.

A: Maybe you should ___小题3:_him up..

B: No, I don’t want to talk it on the phone.

A: But you ___小题4:__ should talk to him so that you can say you’re sorry.

B: Yes, I know I should I should, but it’s not ____小题5:___.

对聚合物 和 的下列说法中正确的是  [ ]

A．两者互为同系物

B．均由加聚反应制得

C．两者互为同分异构体

D．由不同的单体缩聚得到