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【简答题】
编写一个程序，遍历E盘下所有的文件，将格式为mp4的文件的绝对路径打印出来。 提示： 1、 使用遍历文件的方式，遍历E盘中所有的文件 2、 判断遍历出来的文件名是否以”mp4”结尾。
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举一反三
【单选题】You______ the difficulties after I explain the whole thing to you.
A.
will be seen
B.
will have seen
C.
will see
D.
see
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【单选题】______ their homework, the children went for a walk.
A.
When they were doing
B.
After they have done
C.
Having done
D.
Have done
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【简答题】A．After they have sent the electronic forms to the schools they apply. B．After they have posted the Common Application to the university they apply. C．Not until .the school knows the number of Common ...
【简答题】函数y=sin（-2x）的单调递增区间是______．
【单选题】______ their homework, the children went for a walk.
A.
When they were doing
B.
After they have done
C.
Having done
D.
received...didn't accept
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