单项选择题
若x=3是方程a-bx=4的解,则-6b+2a+2021值为()
A.2017
B.2027
C.2045
D.2029
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单项选择题
当3≦m< 5时,化简|2m-10|-|m-3|得()
A.13+m
B.13-3m
C.m-3
D.m-13
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单项选择题
He seemed to regard it ()a small triumph.
A.to
B.as
C.with
D.for
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