The authors main purpose of writing this article is to claim thatA．everybody has his dark
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The authors main purpose of writing this article is to claim that
A．everybody has his dark side.
B．being helpful is a valuable virtue.
C．economical crisis is terrible.
D．adversity teaches people a lot.
请帮忙给出正确答案和分析，谢谢！
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正确答案：D
主旨题。通读本文．可以发现作者在文章的末尾点出本义的主旨，作者要表明的意图是：艰苦的岁月能锻炼人坚忍的意志，克服困难的勇气，坚持不懈的进取心，我们要为此自豪，因此[D]正确。