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1、专题16 科普类说明文2018高考题D【2018全国I】We may think were a culture that gets rid of our worn technology at the first sight of something shiny and new, but a new study shows that we keep using our old devices(装置) well after they go out of style. Thats bad news for the environment and our wallets as these outdat
2、ed devices consume much more energy than the newer ones that do the same things.To figure out how much power these devices are using, Callie Babbitt and her colleagues at the Rochester Institute of Technology in New York tracked the environmental costs for each product throughout its life from when
3、its minerals are mined to when we stop using the device. This method provided a readout for how home energy use has evolved since the early 1990s. Devices were grouped by generation Desktop computers, basic mobile phones, and box-set TVs defined 1992. Digital cameras arrived on the scene in 1997. An
4、d MP3 players, smart phones, and LCD TVs entered homes in 2002, before tablets and e-readers showed up in 2007.As we accumulated more devices, however, we didnt throw out our old ones. The living-room television is replaced and gets planted in the kids room, and suddenly one day, you have a TV in ev
5、ery room of the house, said one researcher. The average number of electronic devices rose from four per household in 1992 to 13 in 2007. Were not just keeping these old devices we continue to use them. According to the analysis of Babbitts team, old desktop monitors and box TVs with cathode ray tube
6、s are the worst devices with their energy consumption and contribution to greenhouse gas emissions（排放）more than doubling during the 1992 to 2007 window.So whats the solution（解决方案）? The teams data only went up to 2007, but the researchers also explored what would happen if consumers replaced old prod
7、ucts with new electronics that serve more than one function, such as a tablet for word processing and TV viewing. They found that more on-demand entertainment viewing on tablets instead of TVs and desktop computers could cut energy consumption by 44%.32. What does the author think of new devices?A.
8、They are environment-friendly. B. They are no better than the old.C. They cost more to use at home. D. They go out of style quickly.33. Why did Babbitts team conduct the research?A. To reduce the cost of minerals.B. To test the life cycle of a product.C. To update consumers on new technology.D. To f
9、ind out electricity consumption of the devices.34. Which of the following uses the least energy?A. The box-set TV. B. The tablet.C. The LCD TV. D. The desktop computer.35. What does the text suggest people do about old electronic devices?A. Stop using them. B. Take them apart.C. Upgrade them. D. Rec
10、ycle them.【答案】32. A 33. D 34. B 35. A【解析】本文是一篇科普说明文。文章讲述了新旧电子设备的差别，旧电子设备耗能高，不环保。所以作者主张使用新电子设备。33. 细节理解题。根据文章第二段中的To figure out how much power these devices are using, Callie Babbitt and her colleagues at the Rochester Institute of Technology in New York tracked the environmental costs for each produ
11、ct throughout its life 可知，Babbitts team研究的目的是弄清楚这些设备用了多少电。故选D。34. 细节理解题。根据文章最后一段中的They found that more on-demand entertainment viewing on tablets instead of TVs and desktop computers could cut energy consumption by 44%.可知，平板电脑是耗能最少的电子设备，可以降低44%的耗能。故选B。35. 推理判断题。根据文章的整体内容可知，因为旧的电子设备耗能高，不环保。所以作者建议停止使用
12、旧的电子设备。故选A。点睛：熟悉比较句型是彻底理解本文的关键，也是解题的关键。本文中的比较句型：1. Thats bad news for the environment and our wallets as these outdated devices consume much more energy than the news ones that do the same things做同样的事，旧的过时的装置比新装置消耗更多能源，对环境有害，浪费钱财。2. According to the analysis of Babbitts team, old desktop monitors an
13、d box TVs with cathode ray tubes are the worst devices with their energy consumption and contribution to greenhouse gas emissions (排放) more than doubling during the 1992 to 2007 window.根据Babbitt团队的分析，旧的桌面监视器和阴极射线管箱式电视机是最差的电子设备，它们的耗能和温室气体的排放是1992到2007window的两倍还多。3. They found that more on-demand ente
14、rtainment viewing on tablets instead of TVs and desktop computers could cut energy consumption by 44%.他们发现在平板电脑上看的随需变化的娱乐节目比在电视和电脑上看耗能减少了44%。 B【2018浙江】 Steven Stein likes to follow garbage trucks. His strange habit makes sense when you consider that hes an environmental scientist who studies how to
15、reduce litter, including things that fall off garbage trucks as they drive down the road. What is even more interesting is that one ofSteins jobs is defending an industry behind the plastic shopping bags. Americans use more than 100 billion thin film plastic bags every year. So many end up in tree b
16、ranches or along highways that a growing number of cities do not allow them at checkouts(收银台) . The bags are prohibited in some 90 cities in California, including Los Angeles. Eyeing these headwinds, plastic-bag makers are hiring scientists likeSteintomake the case that their products are not as bad for the planet as most people assume. A
