----Wake up, Tom. Time to rise.

-----I_____ asleep while I was reading.

A. should have fallen   B. must have fallen   C. could fall   D. must fall

B


解析:

本題考查情態(tài)動詞表示猜測。對發(fā)生在過去的事情進行可能性極大的猜測，用must have done。

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A．clothes dryers are more efficient
B．clothesline drying reduces home value
C．clothes dryers are energy-saving
D．clothesline drying is not allowed in most U．S．states
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B．Environmentalists．
C．Homeowners Associations．
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【小題3】What is mainly discussed in the text?
A．Clothesline drying: a way to save energy and money．
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【小題1】 What eventually made Carla Toebe realize she was spending too much time on the Internet?

A．Her daughter's repeated complaints.
B．Tiredness resulting from lack of sleep.
C．The poorly managed state of her house.
D．The high financial costs adding up.
【小題2】What is the main idea of para4?
A．A study claimed to be the first large-scale look at Internet overuse.
B．The American Psychiatric Association plans to list Internet addiction in its edition.
C．There are heated discussions about negative experiences over internet overuse.
D．There is a growing concern towards internet addiction.
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A．it seriously affected family relationships
B．one visited porn websites frequently
C．too much time was spent in chat rooms
D．people got involved in online gambling
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A．discouragedB．pressuredC．depressedD．puzzled
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B．control his desire for online gaming
C．show how good he is at online gaming
D．exchange online gaming experience
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