【单选题】
Many apartments have doors with a security window so that one may ______ outside and observe visitors without being seen.
A.peer
B.peek
C.peel
D.pile
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根据网考网移动考试中心的统计,该试题:
5%的考友选择了A选项
87%的考友选择了B选项
3%的考友选择了C选项
5%的考友选择了D选项