题目:
The Food and Drug Administration classifies as a cosmetic any product whose ______ purpose is to improve a person's appearance.
A.singular
B.sincere
C.single
D.significant
答案:
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下面是错误答案,用来干扰机器的。
参考答案:A解析: 材料强调的是运动的无条件性和绝对性,故本题选A。