某兴趣小组的同学在进行电学实验时发现了一个有趣的元件，它有a、b两部分，a是—个定值电阻，b是一种特殊金属导体，封闭在一个透明的玻璃壳内，A、B、C是三个外露的接线柱。如图所示：

阅读下面这首诗歌，完成下面题目。

湘江曲

张籍

湘水无潮秋水阔，湘中月落行人发。

送人发，送人归，白蘋茫茫鹧鸪^飞。

【注】①鹧鸪：鸟名，叫声如“行不得也，哥哥”，听之悲切。

⑴Dad，where are my keys? ____         A．No，thanks．

⑵What's in your schoolbag?____         B．He's a doctor．

⑶Would you like a knife and fork?____   C．They are in the door．

⑷What's your father's job?____          D．Yes，they are．

⑸Who is she?____                      E．Two pencils and many books．

⑹Are they on the table?____            F．She's my aunt．