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 outd
2、ated 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 whe
3、n 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.
4、And 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
5、 every 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
6、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.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
7、products 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
8、?A. 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.
9、To find 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.
10、 Recycle 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
11、product 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
12、以作者建议停止使用旧的电子设备。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 m
13、onitors and 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 o
14、n-demand entertainment 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 st
15、udies how to reduce litter, including things that fall off garbage trucks as they drive down the road. What is even more interesting is that one of Steins jobs is defending an industry behind the plastic shopping bags. Americans use more than 100 billion thin film plastic bags every year. So many en
16、d up in tree branches 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 like Stein to make the case that their produc
17、ts are not as bad for the planet as most people assume.Among the bag makers argument: many cities with bans still allow shoppers to purchase paper bags, which are easily recycled but require more energy to produce and transport. And while plastic bags may be ugly to look at, they represent a small p
18、ercentage of all garbage on the ground todayThe industry has also taken aim at the product that has appeared as its replacement: reusable shopping bags. The stronger a reusable bag is, the longer its life and the more plastic-bag use it cancels out. However, longer-lasting reusable bags often requir
19、e more energy to make. One study found that a cotton bag must be used at least 131 times to be better for the planet than plastic.Environmentalists dont dispute（质疑） these points. They hope paper bags will be banned someday too and want shoppers to use the same reusable bags for years.24. What has St
20、even Stein been hired to do?A. Help increase grocery sales.B. Recycle the waste material.C. Stop things falling off trucks.D. Argue for the use of plastic bags.25. What does the word “headwinds”in paragraph 2 refer to?A. Bans on plastic bags.B. Effects of city development.C. Headaches caused by garb
21、age.D. Plastic bags hung in trees.26. What is a disadvantage of reusable bags according to plastic-bag makers?A. They are quite expensive.B. Replacing them can be difficult.C. They are less strong than plastic bags.D. Producing them requires more energy.27. What is the best title for the text?A. Pla
22、stic, Paper or NeitherB. Industry, Pollution and EnvironmentC. Recycle or Throw AwayD. Garbage Collection and Waste Control【答案】24. D 25. A 26. D 27. A【解析】文章分析了几种购物袋的使用情况，塑料袋造成了环境问题，尽管纸袋容易回收，但生产和运输需要更多的能源，希望消费者使用耐用可重复使用的袋子。24. 细节理解题。根据第一段 one of Steins jobs is defending an industry behind the plastic
23、 shopping bags.和第二段 plastic-bag makers are hiring scientists like Stein to make the case that their products are not as bad for the planet as most people assume.可知塑料袋生产商雇用Steven Stein是为了证明他们的产品并不像大多数人想象的那样对地球有害，是对塑料袋被禁用的解释和争论。故选 D。25. 词义猜测题。上文介绍在许多美国大城市塑料袋被禁用，看到这种现状，塑料袋生产商雇用 Steven Stein等科学家是为了证明他们的
24、产品并不像大多数人想象的那样对地球有害。headwinds“逆风” ，此处指塑料袋被禁用的现状，即 Bans on plastic bags，故选 A。26. 细节理解题。根据第四段 However, longer-lasting reusable bags often require more energy to make.可知塑料袋生产商认为生产耐用且能重复使用的袋子需要更多的能量，故选 D。27. 标题归纳题。文章讲述了使用塑料袋造成的环境问题，纸袋容易回收，但生产和运输需要更多的能源，希望消费者使用耐用可重复使用的袋子。对这三种方式进行了对比，Plastic, Paper or Nei
25、ther 既能概括全文，又能吸引读者，最适合作为标题。故选 A。【点睛】概括主旨的方法是：先看首尾或各段开头再看全文找主题句，若无明显主题句，就通过关键词句来概括(如议论文中寻找表达作者观点态度的词句，要看懂全文的主要内容，明白了主要内容就能准确概括文章标题。小题 4要求概括标题，本文讲述了使用塑料袋造成的环境问题，纸袋容易回收，但生产和运输需要更多的能源，希望消费者使用耐用可重复使用的袋子。对这三种方式进行了对比，Plastic, Paper or Neither既能概括全文，又能吸引读者，适合作为标题。C【2018天津卷】Theres a new frontier in 3D printi
26、ng thats beginning to come into focus: food. Recent development has made possible machines that print, cook, and serve foods on a mass scale. And the industry isnt stopping there.Food productionWith a 3D printer, a cook can print complicated chocolate sculptures and beautiful pieces for decoration o
27、n a wedding cake. Not everybody can do that it takes years of experience, but a printer makes it easy. A restaurant in Spain uses a Foodini to “re-create forms and pieces” of food that are “exactly the same,” freeing cooks to complete other tasks. In another restaurant, all of the dishes and dessert
28、s it serves are 3D-printed,rather than farm to table.Sustainability(可持续性）The global population is expected to grow to 9.6 billion by 2050, and some analysts estimate that food production will need to be raised by 50 percent to maintain current levels. Sustainability is becoming a necessity. 3D food
29、printing could probably contribute to the solution. Some experts believe printers could use hydrocolloids (水解胶体) from plentiful renewables like algae(藻类) and grass to replace the familiar ingredients(烹饪原料).3D printing can reduce fuel use and emissions. Grocery stores of the future might stock “food“
30、 that lasts years on end, freeing up shelf space and reducing transportation and storage requirements.NutritionFuture 3D food printers could make processed food healthier. Hod Lipson, a professor at Columbia University, said, “Food printing could allow consumers to print food with customized nutriti
31、onal content, like vitamins. So instead of eating a piece of yesterdays bread from the supermarket, youd eat something baked just for you on demand.”ChallengesDespite recent advancements in 3D food printing, the industry has many challenges to overcome. Currently, most ingredients must be changed to
32、 a paste(糊状物) before a printer can use them, and the printing process is quite time-consuming, because ingredients interact with each other in very complex ways. On top of that, most of the 3D food printers now are restricted to dry ingredients, because meat and milk products may easily go bad. Some
33、 experts are skeptical about 3D food printers, believing they are better suited for fast food restaurants than homes and high-end restaurants.46. What benefit does 3D printing bring to food production?A. It helps cooks to create new dishes.B. It saves time and effort in cooking.C. It improves the co
34、oking conditions.D. It contributes to restaurant decorations.47. What can we learn about 3D food printing from Paragraphs 3?A. It solves food shortages easily.B. It quickens the transportation of food.C. It needs no space for the storage of food.D. It uses renewable materials as sources of food.48.
35、According to Paragraph 4, 3D-printed food _.A. is more available to consumersB. can meet individual nutritional needsC. is more tasty than food in supermarketsD. can keep all the nutrition in raw materials49. What is the main factor that prevents 3D food printing from spreading widely?A. The printin
36、g process is complicated.B. 3D food printers are too expensive.C. Food materials have to be dry.D. Some experts doubt 3D food printing.50. What could be the best title of the passage?A. 3D Food Printing: Delicious New TechnologyB. A New Way to Improve 3D Food PrintingC. The Challenges for 3D Food Pr
37、oductionD. 3D Food Printing: From Farm to Table【答案】46. B 47. D 48. B 49. C 50. A【解析】本文是一篇科普类短文阅读。文章主要介绍了 3D打印技术在食物上的应用取得了进展，但目前仍面临着许多方面的挑战。46. 推理判断题。根据文章 Food production中叙述了没有经验的人可以用 3D打印机做出复杂的巧克力雕塑和美丽的婚礼蛋糕，以及餐厅能够用 3D打印出所有的菜肴和甜点，从而可以推断出 3D打印的优势是节省了做饭的时间和精力。故选 B。48. 推理判断题。根据文章第四段 Food printing could
38、allow consumers to print food with customized nutritional content, like vitamins.（食品打印可以让消费者打印定制营养的食物） ，从而可以推断出 3D打印出来的食物可以满足个人营养需求。故选 B。49. 细节理解题。根据文章最后一段 most of the 3D food printers now are restricted to dry ingredients, because meat and milk products may easily go bad.可知，阻止 3D打印食物进一步广泛使用的原因是原料必须
39、是干的，含水多的肉和牛奶不能应用于 3D打印因为很容易坏。故选 C。50. 主旨大意题。文章主要介绍了 3D打印技术在食物上的应用取得了进展，但目前仍面临着许多方面的挑战。所以用标题 3D Food Printing: Delicious New Technology，故选 A。 点睛：科普类说明文历来是高考阅读理解命题的重点。本文是一篇 3D打印技术在食物方面的应用，文章运用一些小标题和对一些专业词汇作了多处中文注释，降低了考生的阅读难度。文章逻辑性强，条理清楚，主要考查学生对语篇的整体把握和领悟能力以及对特定细节的认读和处理能力。最后一小题考查主旨大意，为文章选择出最好的标题。考生做此题时
40、一定要注意选择项必须要能概括整个文章的内容，不能以偏概全。如 B、C、D 选择项在文章中都有所涉及，但不足以概括全文，所以需要考生正确概括全文的主旨大意。C2018北京卷Plastic-Eating WormsHumans produce more than 300 million tons of plastic every year. Almost half of that winds up in landfills(垃圾填埋场), and up to 12 million tons pollute the oceans. So far there is no effective way t
41、o get rid of it, but a new study suggests an answer may lie in the stomachs of some hungry worms. Researchers in Spain and England recently found that the worms of the greater wax moth can break down polyethylene, which accounts for 40% of plastics. The team left 100 wax worms on a commercial polyet
42、hylene shopping bag for 12 hours, and the worms consumed and broke down about 92 milligrams, or almost 3% of it. To confirm that the worms chewing alone was not responsible for the polyethylene breakdown, the researchers made some worms into paste(糊状物) and applied it to plastic films. 14 hours later
43、 the films had lost 13% of their mass apparently broken down by enzymes (酶) from the worms stomachs. Their findings were published in Current Biology in 2017.Federica Bertocchini, co-author of the study, says the worms ability to break down their everyday food beeswax also allows them to break down
44、plastic. Wax is a complex mixture, but the basic bond in polyethylene, the carbon-carbon bond, is there as well, she explains, The wax worm evolved a method or system to break this bond. Jennifer DeBruyn, a microbiologist at the University of Tennessee, who was not involved in the study, says it is
45、not surprising that such worms can break down polyethylene. But compared with previous studies, she finds the speed of breaking down in this one exciting. The next step, DeBruyn says, will be to identify the cause of the breakdown. Is it an enzyme produced by the worm itself or by its gut microbes(肠
46、道微生物)?Bertocchini agrees and hopes her teams findings might one day help employ the enzyme to break down plastics in landfills. But she expects using the chemical in some kind of industrial process not simply millions of worms thrown on top of the plastic.43. What can we learn about the worms in the
47、 study?A. They take plastics as their everyday food.B. They are newly evolved creatures.C. They can consume plastics.D. They wind up in landfills.44. According to Jennifer DeBruyn, the next step of the study is to .A. identify other means of the breakdownB. find out the source of the enzymeC. confir
48、m the research findingsD. increase the breakdown speed45. It can be inferred from the last paragraph that the chemical might .A. help to raise wormsB. help make plastic bagsC. be used to clean the oceansD. be produced in factories in future46. What is the main purpose of the passage?A. To explain a
49、study method on worms.B. To introduce the diet of a special worm.C. To present a way to break down plastics.D. To propose new means to keep eco-balance.C【文章大意】 本文是一篇科普知识类文章。从环保理念出发，文章围绕一种可以降解塑料的虫子大蜡螟展开，描述了研究进展及虫子能降解塑料的原理，即使用其胃中的酶降解塑料，为塑料污染问题提供了新的思路。43. C 细节理解题。根据文章第二段中的“The team left 100 wax worms on a commercial polyethylene shopping bag for 12 hours, and the worms consumed and broke down about 92 milligrams, or almost 3% of it.”可知，这些虫子可以消耗聚乙烯购物袋，即塑料袋
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