单项选择题

Rats are clever enough to ______.

A．know when food has got poison in it
B．have good leaders and tell them what to do
C．eat food that is dangerous
D．kill men who try to kill them
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单项选择题
Here are no black rats in Europe today because ______.
A．they got plague in the Middle Ages
B．they live in America, Asia and Africa now
C．men killed them all with diseases
D．brown rats took their place
单项选择题
What is the man likely to do after the calling
A．He will call on the woman.
B．He will book a room.
C．He will go out for a walk.
D．He will do some shopping.
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