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问题 单项选择题

所用氧化管的最适宜相对湿度范围为（），当空气中相对湿度大于（）应勤换氧化管。

A.30％～70％，70％

B.50％～80％，70％

C.30％～70％，50％

答案

参考答案：A

阅读理解

阅读理解

       My name is Li Kuan. My English teacher is Julia. She is from England. She has two  children(孩子): a son and a daughter. Her daughter is Mary. Her son is Ted. Julia and her daughter are in China, but her

husband(丈夫) Paul Smith is in England. And her son is in America. Paul is a policeman(警察).Ted is a

college(大学) student. Mary and I are in the same school. We are good friends. I help her with her

Chinese and she helps me with my English. We often help each other and learn(学习) from each other.

根据短文内容，完成下列句子。

1. Julia and Paul are Mary’s _________.

2. Ted’s _________ is my good friend.

3. Ted and Mary are _________ and sister.

4. Mr. Smith is a policeman in _________.

5. Paul’s wife(妻子) is a _________ in China.
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填空题

长度单位：1千米=______米=______分米=______厘米．
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