高考英语一轮复习课时提能练15含解析外研版

课时提能练(十五)

Ⅰ.阅读理解

A

(2019·新疆适应性测试)Super­storm Sandy slammed into the eastern United States three years ago.The wind­driven water caused a lot of flooding,especially in the region's subway system.Now two teens have invented a device that could help prevent future subway floods.

In New York City alone,Super­storm Sandy caused an estimated $19 billion in damage.Much of the flood­waters entered the subway system through its ventilation grates(通风栅).Those metal grills usually lie at ground level.When the system is shut down ahead of a flood,engineers try to cover those grates with plywood(胶合板) and sandbags.But the flooding often washes away those measures,which allows water to flow into the tunnels.Raising those grates even a tiny bit above ground level would cost a lot of money.Other ideas have included building tall chimneys around the holes.That would raise the grates and cost a lot of money,too.

Kyle and Raymond came up with a different,less expensive idea.They designed a metal grate with a built­in,adjustable cover.When trains are running,one part of the grate slides open to bring in fresh air.But when the system is shut down,that part can be slid shut to completely block the grate.

Their grate is the same size as the grates used now.So,it would be simple,they say,to lift out the old grate and drop in a replacement.Their design includes tamper­proof features,which can prevent operation mistakes.They make sure that people don't intentionally shut off airflow during normal conditions.For people with the proper key,it would only take a minute or two to close the grate ahead of a flood.

【语篇解读】本文是一篇说明文,主要讲述三年前超级风暴Sandy猛烈袭击美国东部,造成了洪水灾害,当地的地铁被洪水淹没。为防止地铁再次被洪水淹没,两位少年发明了一种装置。

1.What's the second paragraph mainly about?

A.The steps to operate grates.

B.The measures to prevent flood.

C.The function of plywood and sandbags.

D.The disadvantage of present subway system.

D [段落大意题。根据第二段第一句可知,据估计超级风暴Sandy仅在纽约市就造成了价值190亿美元的损失。文章接下来分析了超级风暴造成的洪水淹没地铁的原因:目前的地

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