问题
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It can be inferred from the passage that the author would argue that in determining popula
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It can be inferred from the passage that the author would argue that in determining popula
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It can be inferred that in his discussion of maladaptive frailties the author assumes that
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In the year of 1993, American President, Bill Clinton, proposed that every American citize
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The author believes that in face of the challenge
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In the last paragraph the author thinks that pict