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【单选题】
Robert Johnson says that computer addiction _____.A.
can easily be controlled with a little self-discipline
B.
doesn’t really exist at all
C.
is a serious illness
D.
/
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反馈参考答案：
举一反三
【单选题】The Big Bang theory provides a viable solution to one of the most pressing questions of all time.
A.
reliable
B.
feasible
C.
defensible
D.
susceptible
【简答题】如果反馈信号与输入信号并联( x f = i f ),称为 反馈 。
【单选题】Through the inception of the Big Bang theory, however, no longer could the universe be considered infinite.
A.
knowledge
B.
understanding
C.
introduction
D.
beginning
【单选题】在Word2010编辑状态下，要想删除光标后面的字符，可以按以下哪个键？（）
A.
[Backspace]
B.
[Delete]
C.
[Insert]
D.
[Tab]
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