【判断题】【消耗次数：1】
输入设备有键盘、鼠标、光笔、扫描仪、显示器等。
①
正确
②
错误
参考答案：
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This article deals with the natural phenomenon which __________ most interesting to everyone.
①
are
②
is
③
they are
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it is
【单选题】
This is a very difficult operation. It is essential that you __________ for emergency.
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are to be prepared
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would prepared
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be prepared
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must be prepared
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pick out
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give off
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obviously
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surprisingly
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particularly
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normally
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arrived
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will arrive
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Speaking, please
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I’d like to make an appointment, please
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Yes, go on
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larger than
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③
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