【单选题】
The USA is composed of 50 states, ______ are separated from the others by land or water.
A.two of these
B.of whom two
C.two of which
D.two of that
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根据网考网移动考试中心的统计,该试题:
8%的考友选择了A选项
0%的考友选择了B选项
85%的考友选择了C选项
7%的考友选择了D选项