铜质材料的导线在生活中有着广泛的应用，关于铜导线下列说法中正确的是（　　）

A．铜导线是导电能力最好的导线

B．铜导线截成两段后并成一根使用，电阻变小

C．铜导线均匀拉长后，电阻变小

D．铜导线的温度升到足够高时，电阻为零

补全对话,每空一词

A: Can I   1   you?

B: Yes, I 'd   2  some noodles, please.

A: What kind   3  noodles would you like?

B: What kind of noodles   4  you have?

A : We have beef , chicken, mutton, cabbage, potato…

B: OK, I'd like mutton   5 potato noodles, please.

A:   6  . And what size would you like?

B: What    7  do you have?

A: We have large, medium and   8   bowls.

B: Oh, a medium bowl, please.   9     10   is it?

A: Ten yuan.