单项选择题


Questions 14-17 are based on the following dialogue.
Where is Mr. Black going

A．Detroit.
B．Chicago.
C．New York.
D．Boston.
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单项选择题
According to the author, the importance of green-spaces in the urban environment ______.
A．is still unknown
B．is usually neglected
C．is being closely studied
D．has been fully recognized
单项选择题
Whom is the man speaking to
A．Electrician.
B．Plumber.
C．Repairman.
D．Mechanic.
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