单项选择题

The dolphin's teeth __________.

A．are used to chew food
B．are all the same as the ape's
C．can swallow a whole fish
D．are used to catch food
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单项选择题
They are talking about the people and the things _______ they saw on their way home.
A．which
B．that
C．those
D．who
单项选择题
Jimmy is the oldest boy and is miler than __________ boy in the class.
A．the other
B．any other
C．each
D．all
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