单选。 yourjacket.It'scold.[ ] A.Puton B. T

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问题选择题

单选。

your jacket. It's cold.[ ]

A. Put on

B. Take off

C. Put away

答案

答案：A

填空题

根据句意及首字母提示补全单词。

1. Miss Wang t_____ English in No.2 Middle School.

2. A _____ of boys are playing basketball happily.

3. — What's the w_____ like?

— It's cloudy.

4. I don't like the lion,because it is d_____.

5. His father is a doctor, he works in a h_____.

(2)根据数据表，在答题卷的图中绘制硝酸钾的溶解度曲线；

(3)从溶解度曲线上查出：45℃时，氯化钾的溶解度为 g；

(4)据图分析，要除去硝酸钾中混有的少量氯化钾，可采用的结晶方法是。