现行《自动扶梯和自动人行道监督检验规程》规定，自动扶梯监督检验，万用表的精度要求是±（）%。

A.1

B.2

C.3

D.5

根据句意和单词的首字母提示写单词。

1. This question is d_________. I can't answer it.

2. I have no brother or sister, b_________ I have many friends.

3. I like playing computer games.It's very i_________.

4. He has o_________ one pencil in his pencil case.

5. —Let's play soccer.—That sounds f_________.