根据汉语提示完成句子

1. There is much ______(雨水) here in summer.

2. My uncle often ______(驾驶) his car to work.

3. Last week we had a day ______(休息).

4. I slept ______(晚) but got up early this morning.

5. If I meet Han Hong, the famous singer, I must get her ______(亲笔签名).

电炉丝通电后热得发红，而与电炉丝连接的铜导线却不太热，这是因为( )。

A．通过电炉丝的电流强度比通过铜导线的电流强度大

B．铜导线的电阻小，所以消耗的电能少，电炉丝的电阻大，消耗的能量多，所以热得发红

C．铜导丝有绝缘层，所以不怎么热

D．铜导线比电阻丝传热快，所以不怎么热