单项选择题

The passage tells us that cats___________.

A．sleep longer than humans
B．have similar sleeping habits as humans
C．have no regular sleep
D．take naps besides their regular sleep
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单项选择题
Which CANNOT be learned about the crash
A．There were 115 passengers on board.
B．The plane crashed on Tuesday.
C．The plane crashed shortly after takeoff.
D．Only one passenger survived the crash.
单项选择题
Some experts believe that___________.
A．cats have a natural clock inside them
B．people can live better by taking naps
C．people should learn from cats
D．famous people are all known for their energy
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