半衰期是指（） A.药效下降一半所需时间 B.血药浓度下降一半所需时间 C.组织药物

补全对话（10分）

A: Hello, Xiao Hong!

B: Hello!

A: You look a little3 upset. 小题1:_______

B: Yes. It just my mom. She always nags（唠叨）me.

A: Really? What does your mother nag you about?

B: 小题2:________ “Get up now… Everything must be in place… Don’t forget your piano lesson…”

A: Well, all the mothers like saying these words to their children.

B: Also, I’m fond of pop music. 小题3:______ We don’t have the same interest in many things.

A: 小题4:______ But I should say she nags you because she cares about you. You’re lucky to have such a good mother.

B: I agree with you. 小题5:______.

A: That’s right. Understanding is important. If your mom knows that everything is fine, she will never nag.

解剖式人工牙的牙尖斜度一般为（）。

A.0°

B.10°

C.15°

D.20°

E.30°

简述师生间人际关系的特点。

神经调节的基本方式是________。它的结构基础是反射弧，按照神经冲动的传递方向顺序，反射弧结构依次包括感受器→_________→_________→传出神经→__________。

严禁在井下存放（）

A.变压器油

B.润滑油

C.棉纱