【单选题】
Some—such as liquid oxygen—are so cold that they embrittle many constructional materials and evaporate continuously if not refrigerated.
A.weaken
B.strengthen
C.reduce
D.cause ... to become brittle
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根据网考网移动考试中心的统计,该试题:
19%的考友选择了A选项
25%的考友选择了B选项
6%的考友选择了C选项
50%的考友选择了D选项