单项选择题

We may conclude from the passage that_____.

A．it is probably as dangerous to live in Missouri as in California
B．the New Madrid fault will eventually develop a mountain range in Missouri
C．California will become an island in future
D．A big earthquake will occur to California soon

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单项选择题

This passage implies that_____.

A．horizontal faults are more dangerous than vertical faults
B．Vertical faults are more dangerous than horizontal faults
C．Earthquakes occur only around fault areas
D．California will break into pieces by an eventual earthquake

单项选择题

The New Madrid fault is_____.

A．a horizontal fault
B．a vertical fault
C．a more serious fault than the San Andreas fault
D．responsible for forming the Mississippi River