手术人员洗手消毒时，化学消毒剂需浸泡至肘上6cm。

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问题判断题

答案

参考答案：对

补全对话，情景问答

	1. A: What is the ? B: She is to .
	2. A: Which do you like ? B: . A: Why you like spring? B: I can plant trees.
	3. A: the date? B: It's lst. A: Oh, it's our Day.
	4. A: do you up? B: I usually get up at .

填空题

圆的对称轴是这个圆的（）所在的直线。