单项选择题

Australia began to assume its modem configuration by the Eocene Epoch, some 50 million years ago, when Antarctica broke away and drifted southward.

A．status
B．sphere
C．shape
D．situation
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单项选择题
The Second Hague Disarmament Conference of 1907 was marked more by discord than discourse, a sign of the deteriorating world situation.
A．facilitating
B．upgrading
C．justifying
D．worsening
单项选择题
Although diverse, African music has certain distinctive traits, one of which is the use of repetition as an organizing principle.
A．benefits
B．features
C．notions
D．options
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