单项选择题

We can infer from the passage that scientists are ______.

A．writing reports
B．observing what happened to San Francisco
C．providing more information about the California Earthquake
D．learning more about earthquakes

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热门试题

单项选择题

One of the reasons why the California Earthquake is very impressive is that ______.

A．it was the first time that so many people were killed
B．it was over suddenly
C．the damage and destruction of the city could be easily seen
D．the damage and destruction of the city were nothing unusual

单项选择题

The main cause of the great loss of property 'after the San Francisco earthquake in 1960 is______.

A．falling buildings
B．broken pipes
C．fires
D．floods