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问题 选择题

不可以用分液漏斗分离的一组混合物是（    ）

A．饱和Na2CO3溶液和乙酸乙酯

B．甘油和水

C．溴乙烷和水

D．苯和水

答案

答案：B

甘油可与水以任意比互溶，不能用分液漏斗分离。

综合

读图甲和图乙，完成下列问题。（9分）

（1）图甲中，ABCDE反映的是________________过程，说明该过程的主要标志。（4分）

（2）图甲中E～F所反映的现象为__________________________。（1分）

（3）依据经济发展水平的差异，世界上的国家分为两种类型。图乙中的甲属于__________国家，图乙中的乙属于____________国家。分别说明其劳动力就业结构特点。（4分）
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填空题
填空题。
interest, with,  amaze,  care,  life,  look, many,  surprise,  kill,  they
1. Lots of  ________ things happen every day.
2. Lily is a good girl, she always listens to her teacher ________ in class .
3. There is no plant life ________ air or water.
4. Elephants and whales are the largest ________ animals on land.
5. After you tell me about your school, I know ________ about it.
6. Neighbours were ________ to find the old man dead in his bedroom.
7. My little sister is fond of ________ after her baby cat.
8. This kind of frog is poisonous enough ________ about 2, 200 people.
9. The postcards belong to Tom and Daniel's, they are ________.
10. After reading the storybook, I find it very ________.
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