单项选择题

______ you had listened to me!

A．Only if
B．If only
C．If
D．Only
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单项选择题
The documentaries were ______ great interest to them.
A．/
B．to
C．in
D．of
单项选择题
The cradle of oversea traffic and of the art of naval combats, the Mediterranean, die common ______ of all mankind, makes a tender appeal to a seaman.
A．estate
B．heritage
C．property
D．possession
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