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

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

单项选择题

In paragraph 7, the author mentions road accidents in order to tell people ______.

A．Americans are not afraid of traffic accidents
B．Americans take road accidents for granted because they do not observe traffic rules
C．speeding is the major cause of road accidents in America
D．road accidents actually kill more people than earthquake but are neglected in America