试题:
A study shows that walking fast in your old age is a ______ that you will live a long life.
A.signB.markC.symbol D.signal

答案:

我来补答
A
此题为词义辨析题。sign迹象,征兆;mark标记,记号;symbol象征,符号;signal信号。根据题意“老了走的快是长寿的征兆”,因此选A。
 
 
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这些题目你会做吗?