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问题 单项选择题

分散油是指粒径在（）之间的油滴。

A.100～1000μm

B.10～100μm

C.1³10-3～10μm

D.小于10-3μm

答案

参考答案：A

改错题
短文改错
此题要求改正所给短文中的错误.对标有题号的每一行作出判断：
如有错误(每行只有一个错误), 则按下列情况改正：
此行多一个词:把多余的词用斜线(\)划掉, 在该行下边横线上写出该词, 并也用斜线划掉。
此行缺一个词:在缺词处加一个漏字符号(∧), 在该行下边横线上写出该加的词。
此行错一个词:在错的词下划一横线, 在该行下边横线上写出改正后的词。
注意:原行没有错的不要改。
My classmate Liu Hong is a warmhearted girl. He is
good at studying,  singing,  dancing and playing piano. After
hear Wenchuan  Earthquake,  she felt very sad about it.
She decided to do something to helping Wenchuan people.
First she calls her friends up and came up with having a
benefit show. Then she handed out advertisement with her
friends or put up signs asking people to watch.
Luckily she did very well. A lot of people moved
or gave their hands to  Wenchuan people. At last,  she
raised 5,000 yuan. She gave up all the money to the
quakehit areas. 		1._____
2. _____
3. _____
4. _____
5. _____
6. _____
7. _____
8. _____
9. _____
10. _____
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单项选择题

“社会保障”一词的出现，最早是在（）1935年颁布的《社会保障法》中

A.德国

B.美国

C.英国

D.日本
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