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Section BFill in each blank with the proper word or phrase given in the brackets.1. My sister, (which/who) lives in Canada, is a dancer.2. Look! There’s the house(where/that) I used to live.3. He went to a disco, (where/which) always gave him a headache.4. He’s a writer (whose/which) books have been translated into one hundred languages.5. This city, (which/where) is very big is also very friendly.

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Section CComplete the passage with the appropriate words given in the brackets.My sister and I may look similar but when it comes to hobbies, we are very different. I have a very busy (1)(schedule/hobby/group) and I like to keep active all the time. I’d be (2)(happy/excited/bored) if I stayed at home! My sister prefers to chill out and stay (3)(indoors/outdoors/interior). Her hobbies are calligraphy and painting and she does some really (4)(awful/awesome/boring) work—I think she’s very talented. In fact, last month, some of her work was in an (5)(expedition/expectation/exhibition) in our local art gallery—I was very proud of her.

下列科学家为我国化学工业作出突出贡献的是

A. 袁农平
B. 华罗庚
C. 邓稼先
D. 侯德榜

科学探索之路的基本形式包括（）、（）和（）三个环节。

化学元素在地壳中所占的比例数称为（）。