题目内容

The author argues that there is more diversity of life in the sea than in the rain forests because ______.

A. more phyla and classes of life are represented in the sea
B. there are too many insects to make meaningful distinctions
C. many insects species are too small to divide into categories
D. marine life-forms reproduce at a faster rate

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锅炉热效率是表明锅炉热经济性的指标，对蒸汽锅炉而言，其热经济性也可以用（）。

A. 蒸汽量表示
B. 压力和温度表示
C. 煤汽比表示
D. 受热面蒸发率表示

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30（）

A. something
B. nothing
C. anything
D. everything

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With which of the following would the author most likely disagree

A. Persons have the right to dress as they please and flaunt their wealth if they choose to do so.
B. Individuality is a luxury that a large society can no longer afford.
C. Organizations must have more intrinsic worth than wearing a uniform would suggest.
D. The media depend on the sale of clothing, if only in an indirect way.

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21（）

A. so
B. for
C. more
D. much

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The author argues that there is more diversity of life in the sea than in the rain forests because ______.

A. more phyla and classes of life are represented in the sea B. there are too many insects to make meaningful distinctions C. many insects species are too small to divide into categories D. marine life-forms reproduce at a faster rate

锅炉热效率是表明锅炉热经济性的指标，对蒸汽锅炉而言，其热经济性也可以用（）。

30（）

With which of the following would the author most likely disagree

21（）

A. more phyla and classes of life are represented in the sea
B. there are too many insects to make meaningful distinctions
C. many insects species are too small to divide into categories
D. marine life-forms reproduce at a faster rate