题目内容

What is the passage mainly about？

A. The dependence of industrial countries on imported oil.
B. The fundamental change in the world economy.
C. The expansion of multinationals.
D. The Internet and the world economy.

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紫外线可以使DNA分子中的鸟嘌呤碱基形成二聚体。()

A. 正确
B. 错误

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维持蛋白质四级结构的驱动力不同于三级结构的维持力，四级结构的维系主要是亚基之间的-S-S-键。()

A. 正确
B. 错误

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"Expatriate workers" (Line 5, Para. 4) are those who______.

A. can't find jobs in their own countries
B. leave their countries to live and work abroad
C. have to leave their countries for all their life
D. are professionals in medicine, law and other professions

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It was difficult to get Balintore away from the discussion with the crowd because

A. the crowd was composed of soldiers
Balintore was enjoying himself and the crowd was so excited
C. the crowd angrily refused to let Balintore go
D. Balintore stubbornly insisted on staying

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What is the passage mainly about？

A. The dependence of industrial countries on imported oil. B. The fundamental change in the world economy. C. The expansion of multinationals. D. The Internet and the world economy.

紫外线可以使DNA分子中的鸟嘌呤碱基形成二聚体。()

维持蛋白质四级结构的驱动力不同于三级结构的维持力，四级结构的维系主要是亚基之间的-S-S-键。()

"Expatriate workers" (Line 5, Para. 4) are those who______.

It was difficult to get Balintore away from the discussion with the crowd because

A. The dependence of industrial countries on imported oil.
B. The fundamental change in the world economy.
C. The expansion of multinationals.
D. The Internet and the world economy.