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【单选题】
—What did he say? —He told us ________ computer games any more. [ ]A.
to play
B.
not play
C.
don't play
D.
not to play
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举一反三
【简答题】According to the Montreal Protocol, the production of CFCs almost stopped, and there are already signs that the ozone layer is ______.
【单选题】The Montreal Protocol, an international treaty, is aimed at ______.
A.
restricting uses of CFC
B.
restricting uses of methyl bromide
C.
banning uses of CFC
D.
restoring the ozone in the atmosphere
【单选题】______ is also known as 'City of Saints'.
A.
Vancouver
B.
Toronto
C.
Ottawa
D.
Montreal
【单选题】如果需要从文件中读取数据,则可以在程序中创建哪一个类的对象
A.
FileOutputStream
B.
FileInputStream
C.
DatautputStream
D.
FileWriter
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