单项选择题

The author mentions people dying of air pollution in ______.

A．Illinois
B．Pennsylvania
C．New Jersey
D．Washington
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单项选择题
According to the author, America is a highly modern society, ______.
A．so people like it better than before
B．but there is still a big gap between different classes
C．all the people there lead a very happy life
D．all the industries and companies are in the hands of the goverment
单项选择题
Which of the following statements can best describe the telephone in the U. S
A．It's very inexpensive.
B．It saves a lot of trouble.
C．It's very convenient.
D．A ,B and C
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