单项选择题

Passage One
Questions 26 to 28 are based on the passage you have just heard.

A．They were evident in the decreased world temperature.
B．They were of several days’ duration worldwide.
C．They were felt mainly in the Dutch East Indies.
D．They were immediately evident to the world’s scientists.
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单项选择题
A．The United States Copyright Office created it.B．It does not protect artists’ techniques and procedures.C．It has not been changed since its creation.D．It is only applied to copies of the original work.
A．The United States Copyright Office created it.
B．It does not protect artists’ techniques and procedures.
C．It has not been changed since its creation.
D．It is only applied to copies of the original work.
单项选择题
A．Geology.B．Music.C．Medical.D．Mathematics.
A．Geology.
B．Music.
C．Medical.
D．Mathematics.
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