单项选择题

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

A．the; a
B．/; /
C．/; the
D．the; the
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单项选择题
—Dear me! I've been in America for a month.—______you are settled, why don't you take up some serious study
A．If
B．Now that
C．When
D．Even if
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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