单项选择题

A．Take a break.
B．Go to work.
C．Do the other problems.
D．Keep trying.
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单项选择题
Global warming leads to many new diseases.
A．Y
B．N
C．NG
单项选择题
The new physics is exciting; because it________.
A．offers a comprehensive explanation of the universe
B．proves the existence of a ruling intelligence
C．incorporates the work of men of genius
D．makes scientific theorizing easier to understand
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