考点规范练4(必修1 Unit 4)
.阅读理解
A
Though larger cities were mostly spared,Sunday’s tornadoes damaged some small towns in the middle of the U.S.One of the hardest hit was Van,Texas,a town of about 2,600 people located 70 miles southeast of Dallas.Winds there reached up to 140 miles per hour and damaged about 30 percent of the area.Weather experts say it was the strongest tornado to hit the town during more than 70 years.
Emergency workers in Van moved quickly to help those affected,but two people were killed and more than two dozen were injured by the tornado’s winds.A driver in the nearby town of Corsicana was killed by floodwaters that had risen after the storm.
In Lake City,Iowa,a tornado tore the roof off South Central Calhoun High School.One hundred and fifty people had gathered in the safety of the school’s basement,and all escaped without major harm.
Nine people were injured in the 130-mph winds of a tornado that touched down in Delmont,South Dakota,but tornadoes weren’t the only severe weather that state saw on Sunday.Residents in the Black Hills region were faced with a late-spring snowfall of 10 to 18 inches.
Scientists measure tornadoes using the Enhanced Fujita(EF) Scale.It categorizes tornadoes based on the amount of damage they cause and their estimated wind speed.EF1 tornadoes are the weakest,while EF5 tornadoes are the severest.The tornado in Van was categorized as an EF3.
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