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问题:

The moon-landing is mentioned in the first paragraph to illustrate_____. [A]techno

The moon-landing is mentioned in the first paragraph to illustrate_____.

[A] technology cannot solve all of our human problems

[B] progress in vaccine research for influenza has lagged behind

[C] great achievements have been made by men in exploring the unknown

[D] the development of vaccine production methods can not be stopped


  参考答案

正确答案:B

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