单项选择题

A. that
B. what C, whichever
D. whatever
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单项选择题
We can infer from the first paragraph that______.
A．scientists can never predict earthquakes
B．the ability to predict earthquakes is overstated
C．quite a few scientific claims are groundless
D．earthquake predictions are accurate
单项选择题
It is difficult to accurately predict earthquakes because______.
A．earthquakes may take place anywhere, anytime
B．earthquakes may happen unexpectedly under the sea
C．earthquakes may take place while people are asleep
D．the taking place of earthquakes involves many factors
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