Clifford Shaw, an American sociologist, reached the conclusion that the industrial urban environment______ the moral fiber(品质, 意志)and traditions of immigrants who settled in the great cities.
A. shortened
B. lessened
C. lightened
D. weakened
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You must hand your application______to the office by Saturday.
A. on
B. over
C. in
D. out
Could you go ______ what you have done, for the sake of the students who were late？
A. on
B. over
C. into
D. out
“天下第一雄关”嘉峪关是目前保存最完整的城关。()
某企业2018年末的资产总额为5 000万元，其中流动资产为2 000万元;负债总额为3 000万元，其中流动负债为1 000万元。则该企业2018年末的流动比率是：
A. 0.5
B. 2
C. 2.5
D. 5
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