课时分层作业（十三）

课时分层作业（十三） I .单词拼写 1. The architect （建筑师）showed us the house design that she had drawn up. 2. The Natural History Museum is a superb （极好的）place for kids. 3. The study of the brain is often described as the next intellectual frontier （前 沿）. 4. Whats the ula for converting （使转换）pounds into kilograms 5 ・ The castle was built on top of a natural grassy mound （土堆）・ 6. Plants absorb carbon dioxide （二氧化物）from the air and moisture from the soil. II.阅读理解 A Cities are likely to be affected by overheating, thanks to something called the urban heat island effect.Cities tend to be short of trees, which provide shade, and they are covered with black pavement, which absorbs heat from the sun.Think of how it feels to wear a dark shirt versus a white shirt on a sunny day.A black shirt absorbs light, heating you up.But a white shirt reflects light, keeping you cool. The average temperature in a city of a million or more people can be more than 5 degrees F hotter than surrounding areas.That extra 5 degrees can turn a hot day from uncomfortable to deadly.As temperatures rise, cities will be an especially dangerous place to be during a heat wave.To protect public health, city officials are going to make the city cooler. As part of that effort, Los Angeles is coating its roads in CoolSeaL a gray paint that keeps streets and parking lots 10 degrees cooler than black asphalt（沥青）.It will help Angelenos save money during the summer, when air conditioning sends power bills soaring.And it will save lives by lowering temperatures and improving air quality.Hot weather worsens air pollution by turning car exhaust into smog, which can make life miserable for people with asthma（哮喘）and other breathing problems. Of course, LA will have to do more than paint over a few streets to cool off the city.Angelenos will also need to plant more trees and apply white paint to rooftops一 at least those not already covered in solar panels.While LA is a pioneer of reflective streets, other cities, like New York, are already experimenting with reflective roofs or, like Melbourne, lowering the temperature by planting trees.LA is hardly alone in its effort to stay cool. “This is an urgent challenge, and its much bigger than one person, said Mayor Garcetti in a recent statement. Climate change is a fact of life that people in Los Angeles and cities around the world live with every day. 【语篇解读】文章主要讲述了洛杉矶为了在夏季让温度降低，节约开支， 把城市街道刷白，增加反射以使城市在夏季保持凉爽。 1. Which of the following contributes to the urban heat island effect A. Planting more trees in the streets. B ・ Covering the streets with white paint. C・ Applying reflective paint to rooftops. D. Furnishing every house with air conditioners. D ［细节理解题。根据第一段第二句 “...trees, which provide shade, and they are covered with black pavement, which absorbs heat from the sun. ” 才对木提供阴凉， 并覆盖着黑色路面，吸收太阳的热量及第四段第一句LA will have to do...apply white paint to rooftops可知，A、B和C可减少城市热岛效应，只有D项“每家 都安装空调能促进城市热岛效应的形成，因此D项符合题意。］ 2. What should the ci