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【单选题】
新建文件的快捷键是A.
CTRL+O
B.
CTRL+N
C.
CTRL+L
D.
CTRL+Z
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】I find it’s ___ hard ___ understand the English movies.
A.
so, too
B.
so, that
C.
too, to
D.
such, to
【单选题】1 She's so bright-a real ________. I'm sure she'll be promoted again soon
A.
high flyer
B.
slave driver
C.
fly-by-night
【单选题】听力原文：Listen to part of a lecture in a computer science class. Professor All right, why dont we get started here...how many of you own and can operate a computer? ... Two, four, six..., lets see...nine...
A.
The function of computers.
B.
The operation of computers.
C.
The disadvantages of computers.
D.
The emergence of computer crimes.
【简答题】引入新的自变量u，v，变换方程：
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