单项选择题

He said that books on()popular science are in()short supply.

A.the; a
B./; /
D./; the
D.the; the

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

A.built
B.founded
C.kept
D.found

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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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