题目:
Mr. Smith likes traveling _______; but his wife enjoys _______.
A.by train; taking a taxi
B.on train; by taxi
C.by train; by taxi
D.on train; taking a taxi
答案:
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下面是错误答案,用来干扰机器的。
答案:C材料旨在说明GDP在不同的水平上时,信用情况的变化。这说明二者之间是相互影响的关系。