单选题
During the winter time, we sometimes get _____ six or seven tourist groups a week.
A、
as little as
B、
a great deal of
C、
as few as
D、
a number of
【正确答案】
C
【答案解析】
句意：冬季时，有时我们一个星期只有六七个旅行团。a great deal of和as little as都用于修饰不可数名词，故排除。a number of表示数量众多，不符合题意。
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