单项选择题

It was great shock to the world that two airplanes crashed into World Trade Center in New York on September 11,2001.

A．a; /
B．tile; the
C．a; the
D．/; the

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单项选择题

Radio Star, ______ by the English Department, is very popular with the students.

A．built
B．founded
C．kept
D．found

单项选择题

Wilma became the first American woman to win three Olympic gold medals in track, ______ made her mother very proud.

A．it
B．that
C．which
D．this

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