单项选择题

What can be inferred about the swallows mentioned in the conversation

A．They are a type of insect.
B．They are a kind of fish.
C．They are a type of bird.
D．They are a type of pi
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单项选择题
What did the man have difficulty locating the week before
A．A tour guide.
B．A classroom.
C．A map.
D．Maps
单项选择题
How far do the swallows migrate
A．About 200 miles.
B．About 1,000 miles.
C．About 7,000 miles.
D．About 5,000 miles.
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