阅读下面的文章，判断下列句子的正（T）误（F）。

      Hello, everyone. I am Tom. Let me tell you about my family.

      My father is a teacher. His name is Jack. My mother is a doctor. My father calls her lovely Lily. I have

a little sister. And we have a dog. Her name is Nancy. We all like her.

     We are now living in London. But my grandparents are in Beijing. I hope we can go to Beijing one day.

( ) 1. Tom's father is a doctor.

(     ) 2. Tom's sister's name is Nancy.

( ) 3. There is a dog in Tom's family.

(     ) 4. Tom's grandparents are in Shanghai now.

地下工程塑料防水板的搭接缝必须采用（）连接。

A.粘结法

B.热风焊接法

C.黯然圈固定

D.叠接法