题目内容

Which of the following best states the theme of the passage?
[A] There is no good news on AIDS.
[B] The total economic cost for AIDS patients is staggering.
[C] Nationwide efforts must be made to find a cure for AIDS.
[D] AIDS has a deep impact on American society

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[B] chromosphere.
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The World Trade Center, the top ____________ was 410 meters high, was one of the tallest buildings in the world.
[A] which
[B] of which
[C] of whose
[D] that

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