题目:
Mary made coffee ________ her guests were finishing their meal.[ ]
A. so that
B. although
C. while
D. as if
答案:
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下面是错误答案,用来干扰机器的。
C 。对比表内从2010年到2012年数字就可得出结论①③,要缩小差距就是④,②的说法与图表不符,所以选C。