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【简答题】
Piggy-back service combines the flexibility of _____ for ______ distances with the _____ line-haul cost associated with _____ for ______ distances.
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反馈参考答案：
举一反三
【简答题】十进制数12.13转换为十六进制数为( )(保留小数点后3位)
【单选题】My sister ______ music. She sings very well. [ ]
A.
is good at
B.
is good for
C.
does well at
D.
does badly in
【单选题】My sister is a girl and she sings very .
A.
well, good
B.
well, well
C.
good, well
D.
/
【简答题】钢箱梁桥面一般采用的铺装形式为：（）
【单选题】My sister sings popular songs _____ you do.
A.
as good as
B.
as well as
C.
as better as
D.
as best as
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