填空题

【参考答案】

respectable
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填空题
By saying it might as well begin with the words once upon a time (Line 3, Para. 1) the author suggests that the American myth is______.
单项选择题
A．If they don’t involve any risks.B．If they produce predictable side effects.C．When the urgent need for them arises.D．When tests show that they are relatively safe.
A．If they don’t involve any risks.
B．If they produce predictable side effects.
C．When the urgent need for them arises.
D．When tests show that they are relatively safe.
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