科目:高中英语 来源:新世纪五星级题库 题型:050
阅读理解
Lakeland, Fla. April 29 Two cars got out of sight, dropping to the bottom of a 30-foot sinkhole (灰岩坑) that appeared so suddenly that the drivers could not avoid it.
No one was hurt, but the incident was the fifteenth of its kind reported in this area so far this year.
At a town 13 miles from Lakeland, two bedrooms of one house dropped into a hole 60 feet across and 35 feet deep. Part of the next house was dangerously over the hole. The people in both houses had to be taken to safety.
Sinkholes have been happening without warning in this part of Florida for years. So far there is no way to tell when or where one will appear. But when one does, others usually follow in the same area, usually along a straight line.
The worst sinkhole in recent years appeared in 1965. It was 70 feet across and 150 feet deep. It destroyed one house, damaged several others and cracked walls a block away.
One hole, 15 feet deep, opened up this year in the middle of a highway 19 seconds after a car had driven by. Others in the same area happened at night, damaging houses, swallowing up trees and parts of streets and causing 23 frightened people to run away from their homes in nightclothes.
Sinkholes happen when the weather is very dry. The earth at the surface begins to drop into holes underneath, like sand falling in a big hourglass (沙漏). This is how a sinkhole is formed.
1.Sinkholes do not happen ________.
[ ]
A.after a rainstorm
B.in a straight line
C.when the weather is very dry
D.at night
2.When one sinkhole appears, others usually follow ________.
[ ]
A.everywhere
B.immediately
C.in the neighborhood
D.on straight highways only
3.Sinkholes happen because ________.
[ ]
A.there are large holes under houses
B.Lakeland has an underground lake
C.wet mud draws in heavy things such as cars and houses
D.dry earth moves and fills underground holes
4.Which of the following is the main idea of the passage?
[ ]
A.Sinkholes have caused destruction in the Lakeland area.
B.Sinkholes always happen suddenly without any warning.
C.Drivers can not avoid sinkholes.
D.Sinkholes are of huge sizes.
5.The average number of sinkholes happening in Lakeland each month this year is ________.
[ ]
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