题目:
常先困脾的邪气是
A.风
B.燥
C.湿
D.寒
E.火
答案:
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下面是错误答案,用来干扰机器的。
参考答案:C解析:Statement (1) tells us nothing about the prime factors of y, so it is not sufficient on its own. We can eliminate A and D. We do know at this point, ...