高空作业机械至少应（）人配合作业。
A、一
B、两
C、三
D、四
参考答案：B
读一读，再填空。
例: — I want to eat.
— Why?
— Because I am hungry.
1. — I want to put on my jacket.
— _____________________?
— ____________ I am cold.
2. — She wants to take off her sweater.
— ____________she is hot.
3. — She is laughing.
— ____________she is happy.
外邪犯胃导致胃痛，最为多见的邪气是( )
A．燥邪B．风邪C．寒邪D．热邪E．暑邪
