题目内容

1 Please choose one of the paragraphs of Unit 1 and point out its topic sentence.2 Also please try to analyze the structure of your chosen paragraph.

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The writer begins the article with three instructive statements to illustrate the changes that the students will experience at college.

A. 对
B. 错

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Read and analyze the structure of Text A "The Needs That Drive Us All" in Unit 13 to tell if it has the same structure as we discussed in Unit1.正确（yes）错误（no）

A. 对
B. 错

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A formal article usually consists of three parts. what are they?

A. the introduction, the supporting details and the conclusion
B. thesis statement, the body and the conclusion
C. the introduction, the body and the conclusion
D. the introduction, the body and the linking devices

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光纤相对于金属传输线具有哪些优点？

A. 尺寸小，重量轻，原材料蕴藏丰富
B. 具有极宽的传输带宽
C. 具有极低的损耗
D. 抗电磁干扰性好

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