单项选择题

The function of the computer mentioned in the passage is to ______.

A．counterbalance an earthquake's action on the building
B．predict the coming of an earthquake with accuracy
C．help strengthen the foundation of the building
D．measure the impact of an earthquake's vibrations
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单项选择题
It can be inferred from the passage that in minimizing the damage caused by earthquakes attention should be focused on ______.
A．the increasing use of rubber and steel in capital construction
B．the development of flexible building materials
C．the reduction of the impact of ground vibrations
D．early forecasts of earthquakes
单项选择题
One reason why the loss of lives in the Los Angeles earthquake was comparatively low is that ______.
A．new computers had been installed in the buildings
B．it occurred in the residential areas rather than on the highways
C．large numbers of Los Angeles residents had gone for a holiday
D．improvement had been made in the construction of buildings and highways
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