其华在爪的脏是（） A.肝 B.心 C.脾 D.肺 E.肾

胸骨后前位

A．平静呼吸下屏气
B．深吸气后屏气
C．深吸气再呼出后屏气
D．平静呼吸不屏气
E．缓慢连续呼吸

根据句意和空缺处所给首字母写单词。

1. I don't like Chinese at a_____.

2. Boys and girls, help y_______ to some apples.

3. My parents are b_____ teachers. But they work in different schools.

4. My uncle d_____ a bus. He is a driver.

5. -Would you like something to d________?

   -Orange juice, please.

You would have helped your mother do some housework. But you_______.

A．don’t

B．didn’t

C．wouldn’t

D．weren’t

危险品包装类型代码的第一部分用（）来表示。

A．一个阿拉伯数字

B．一个大写拉丁字母

C．两个大写拉丁字母

D．两个阿拉伯数字

电动打磨机的钻头生锈的原因是，放在消毒液中浸泡消毒的时间过长，没有及时取出来（）。

A、风干

B、加热

C、晾干

D、清洗