从方框中选择正确的语句补全对话 使对话意思完整(6分)

A

A: What did you do last night?

B: I went to the concert.

A:小题1:

B: Yes. I had a good time. I enjoyed the music and songs very much.

A: 小题2:

B: They were very good.

A: When will there be the next concert?

B: Next Friday evening. Do you want to go?

A: Yes, I do.小题3:

B: 50 yuan.

A: It’s kind of expensive.

B: I agree.

导电材料是指能够输送和传导电流的材料。对导电材料的基本要求是电阻低、熔点高、机械性能好、比重小、电阻温度系数小。( )