单项选择题

A．At 9:00.
B．At 9:30.
C．At 9:25.
D．At 10:00.
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单项选择题
By observing the behavior of animals, scientists may be able to________.
A．prevent disasters
B．organize groups of people
C．predict earthquakes
D．control areas of California
问答题
His actions__________(与他的道德准则相矛盾)．
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