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【单选题】
扩展名为exe的文件称为_______。A.
后备文件
B.
文本文件
C.
可执行文件
D.
系统文件
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【简答题】小云绣十字绣，要绣1500针才能绣完，已经绣了总数的40%，接着绣下一针应从第几针开始绣？
【单选题】While he was seeking for ways to improve the telescope, Newton made _____ discovery which completely changed _____ man's understanding of colour. [ ]
A.
a; the
B.
the; a
C.
a; /
D.
/; the
【单选题】While he was investigating ways to improve the telescope, Newton made discovery which completely changed man's understanding of color. [ ]
A.
a; /
B.
a; the
C.
/; the
D.
the; a
【简答题】A．She can't afford to play for four hours a day. B．She finds it easy to improve her English. C．She is rejecting the man's advice. D．She will spare no efforts to improve her English.
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