单项选择题

W: Look at that boy. He’s in the tree, isn’t he
M: Yes, I think so. How dangerous!
W: We had better tell him to get down.
M: Quite right. But be sure not to frighten him.

How long will he stop during his travel()

A.For half an hour.
B.For about one hour.
C.For about one and a half hours.

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