【单选题】
The pressure ______causes Americans to be energetic, but it also puts them under a constant emotional strain.
A.to compete
B.competing
C.to be competed
D.having competed
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根据网考网移动考试中心的统计,该试题:
87%的考友选择了A选项
6%的考友选择了B选项
5%的考友选择了C选项
2%的考友选择了D选项