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问题 选择题

下列关于胶体的说法正确的是(　　)

A．胶体与其他分散系的本质区别是粒子直径的大小

B．CuSO4溶液和Fe(OH)3胶体都能产生丁达尔效应

C．明矾净水是利用胶体的吸附性

D．雾、豆浆、氯化钠溶液属于胶体

答案

AC

溶液不具有丁达尔效应，也不属于胶体。

阅读理解

A teacher can be any age. Just ask Sandy. (1)She was ______ ten when she started ______.

How did Sandy get the job? It was not easy. She wanted to help children who cannot hear. But the school had never had such a young helper. Could Sandy do it?

First, Sandy learned to sign. Signing is a way of talking with your hands. (2)Soon it was easy for Sandy to talk to the children. So the school let her help. Now Sandy visits the school almost every day. The children love their young teacher. She is their friend.　

小题1:在（1）句的空白处填入两个单词，使句意完整、上下文通顺。

_____________　_____________

小题2:将第（2）句译成汉语。

__________________________________________________

小题3:找出与“She’d like to help the deaf (聋的)children. ”意思相近的句子。

___________________________________________________

小题4:回答问题：What is “signing”?

_______________________________________________

小题5:找出文章的主题句。

_______________________________________________
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判断题

融资性担保公司注册资本的最低限额为人民币400万元。
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