高考英語閱讀方法(科普文).doc

1、高考英語閱讀方法（科普文）高考英語科普閱讀的方法與實(shí)例 一、考點(diǎn)描述科普類文章是高考英語的?？碱}材，每年高考都有所涉及，如的江蘇卷在五篇閱讀文章中就有兩篇是關(guān)于科普文章的閱讀。因此，同學(xué)們在平時的學(xué)習(xí)中一定要對此引起高度的重視。二、材料特點(diǎn)這類文章的總體特點(diǎn)是：科技詞匯多，句子結(jié)構(gòu)復(fù)雜，理論性強(qiáng)，邏輯嚴(yán)謹(jǐn)。具體說來它有以下幾個特點(diǎn)：1. 文章中詞匯的意義比較單一、穩(wěn)定、簡明，不帶感情色彩，具有單一性和準(zhǔn)確性的特點(diǎn)。這類文章通常不會出現(xiàn)文學(xué)英語中采用的排比、比喻、夸張等修辭手法，一詞多義的現(xiàn)象也不多見。2. 句子結(jié)構(gòu)較復(fù)雜，語法分析較困難。為了描述一個客觀事物，嚴(yán)密地表達(dá)自己的思想，作者經(jīng)常會使

2、用集多種語法現(xiàn)象于一體的長句。3. 常使用被動語態(tài)，尤其是一些慣用被動句式。三、命題特點(diǎn)科普類閱讀的主要命題形式有事實(shí)細(xì)節(jié)題、詞義猜測題、推理判斷題以及主旨概括題等，其中推理判斷題居多。四、應(yīng)對策略1. 要想做好科普英語閱讀理解題，同學(xué)們就要注意平時多讀科普知識類文章，學(xué)習(xí)科普知識，積累常見的科普詞匯，從根本上提高科普英語的閱讀能力。2. 要熟悉科普類文章的結(jié)構(gòu)特點(diǎn)?？破疹愇恼乱话阌蓸?biāo)題(headlines)，導(dǎo)語(introductions)，背景( background)，主體(main body)和結(jié)尾(ends)五部分構(gòu)成。標(biāo)題是文章中心思想高度而又精辟的概括，但根據(jù)歷年的高考真題情況

3、來看，這類閱讀理解材料一般不給標(biāo)題，而要同學(xué)們選擇標(biāo)題。導(dǎo)語一般位于整篇文章的首段。背景交待一個事實(shí)的起因。主體則對導(dǎo)語概括的事實(shí)進(jìn)行詳細(xì)敘述。這一部分命題往往最多，因此，閱讀時，同學(xué)們要把這部分作為重點(diǎn)。結(jié)尾往往也是中心思想的概括，并與導(dǎo)語相呼應(yīng)，命題者常在此要設(shè)計(jì)一道推理判斷題。3. 在進(jìn)行推理判斷時，同學(xué)們一定要以閱讀材料所提供的科學(xué)事實(shí)為依據(jù)，同時所得出的結(jié)論還應(yīng)符合基本的科普常識。五、真題賞析江蘇卷animals can move from place to place, but plants cannot. when an animal is under attack, it ca

4、n run away or fight back. plants certainly cannot run away, and they lack teeth and claws. but plants can defend themselves by using both physical and chemical means.some plants have their own ways to keep animals away. for example, the leaves of the holly plant have sharp spines(刺) that discourage

5、grass-eating animals. holly leaves on lower branches have more spines than leaves on upper branches. this is because the lower leaves are easier for most animals to reach.some plants, such as the oak tree, have thick and hard leaves that are difficult for animals to eat. some grasses may contain a s

6、andy material; eating such grasses wears down the animal毛蟲多刺的) leaves, and each prickle contains poisonous venom (毒液). a single experience with this kind of plant will teach an animal to stay away from it in the future.68. the holly plant has more spines on the lower leaves because most animals_.a.

7、are not tall enough      b. like the lower leaves onlyc. are not clever enough    d. can get the lower leaves easily69. to defend themselves, oak trees use_.a. chemoak treesical means        b. physical meansc. bitter chemica

8、ls        d. sandy materials70. how does tobacco protect itself against an attack from a caterpillar?a. its leaves fight against the attack by physical means.b. its roots send a messenger to discourage the caterpillar.c. its roots increase the production of nicotin

9、e when it is attacked.d. its leaves produce poisonous sand to drive the caterpillar away.71. what would be the best title for this passage?a. plants and animals       b. how plants defend themselvesc. attacks and defenses     d. how animals eat

10、plant leaves【答案與解析】本文主要介紹一些植物是如何通過物理和化學(xué)的方式保護(hù)自己不受外界侵害的。68. d。事: 2.0; mso-line-height-rule: exactly">2段最后一句the lower leaves are easier for most animals to reach可知答案。69. b。推理判斷題。根據(jù)第3段中的oak tree, have thick and hard leaves that are difficult for animals to eat可推知，又厚又硬的樹葉屬于植物自我保護(hù)的物理手段。70. c。推理判斷題

11、。根據(jù)第四段可知，tobacco保護(hù)自己不受毛蟲侵害的辦法是產(chǎn)生更多的nicotine。71. b。主旨概括題。因?yàn)檎恼露荚谥v植物是怎樣保護(hù)他們自己的，故選b。六、模擬訓(xùn)練 awalk through the amazon rainforest today and you will find it is steamy, warm, damp and thick. but if you had been around 15, 000 years ago, during the last ice age, would it have been the same? for more than 3

12、0 years, scientists have been arguing about how rainforests like the amazon might have reacted (反應(yīng)) to the cold, dry cli?mates of the ice ages, but until now, no one has reached a satisfying answer.rainforests like the amazon are important for mopping up co2 from the atmos?phere and helping to slow

13、global warming. currently the trees in the amazon take in around 500 million tons of co2 each year: equal to the total amount of co2 giving off in the uk each year. but how will the amazon react to future climate change? if it gets drier, will it still survive and continue to draw down co2? scientis

14、ts hope that they will be able to learn in advance how the rainforest will manage in the future by understanding how rainforests reacted to climate change in the past.unfortunately, getting into the amazon rainforest and collecting information are very difficult. to study past climate, scientists ne

15、ed to look at fossilized pollen, kept in lake muds. going back to the last ice age means drilling deep down into lake sediments(沉淀物) which requires specialized equipment and heavy machinery. there are very few roads and paths, or places to land helicopters and aero planes. rivers tend to the easiest

16、 way to enter the forest, but this still leaves vast areas between the rivers com?pletely unsampled (未取樣). so far, only a handful of cores have been drilled that go back to the last ice age and none of them provide enough information to prove how the amazon rainforest reacts to climate change.1. the

17、 underlined phrase “mopping up” in the second paragraph means “_”. a. cleaning up    b. taking in    c. wiping out  d. giving out2. how will the amazon rainforest react to future climate change? a. itll get drier and continue to remove co2.b. itll remain steamy, wa

18、rm, damp and thick. c. itll get warmer and then colder and drier.d. there is no exact answer up to present.3. whats the main idea of the last paragraph?a. its important to drill deep down into lake sediments to collect information. b. its impossible to prove how climate changes in the amazon rainfor

19、est. c. its hard to collect information for studies of the past climate in the amazon rainforest. d. its necessary to have specialized equipment and machinery to study the past cli?mate.4. the best title for this passage may probably be _.a. studies of the amazon      &

20、#160;    b. climates of the amazon c. secrets of the rainforests       d. changes of the rainforests 【答案與解析】本文主要介紹了熱帶雨林對氣候的影響。1.b。詞義猜測題。根據(jù)第二段中的 helping to slow global warming，同時結(jié)合化學(xué)知識可推知 mopping up 的意思是“吸入”mso-bidi-font-family: 'times new roman'&q

21、uot;>。另外，文章中的currently the trees in amazon take in around 500 million tones of co2 each year 也暗示 mop up 和 take in 的意思相同。2. d。事實(shí)細(xì)節(jié)題。根據(jù)文章第2段的內(nèi)容(尤其是最后一句話)尤其是最后一句話可推知此題最佳答案為d。3. c。主旨大意題。根據(jù)文章最后一段中的so far, only a handful of cores have been drilled 可知，資料收集不是很容易。4. c。主旨大意題。文章主要講的是亞馬孫熱帶雨林難以預(yù)料的變化，所以選c為佳。為佳

22、。(融化的) snow and gathering clouds may be signs of global warming. the average temperature on earth for last year was the second warmest since written records began 140 years ago.the global average surface temperature in was 14.42 degrees centigrade, the world meteorological organization said. the rec

23、ord, set in 1998, was 14.58 degrees centigrade. “temperatures are getting hotter, and they are getting hotter faster now than at any time in the past, ” said michel jarraud, a wmo official. carbon dioxide(二氧化碳) produced from burning fuels is the most common of the so-called greenhouse gases. the gro

24、wing concentration(集中) in the atmosphere of these gases is thought to be warming the earth. “most of the causes of global warming are due to human action, ” said ken davidson, director of wmos climate programme department.every year, large amounts of gases produced by factories, cars and burning tre

25、es hold in too much heat and cause global warming. many scientists believe the warming, if not stopped, will cause extreme climate changes this century. mily: 'times nthroughout the world, the spreading of particular diseases and other threats(威脅) to human health depend largely on local climates

26、. extreme temperatures can directly cause loss of life. warm temperatures can increase air and water pollution, which in turn can harm human health. in the earths atmosphere there are tiny amounts of gases called greenhouse gases. these gases hold in the heat that comes up from the sun-warmed earth.

27、 as cities have increased in size and population, factories and industries in the world have grown. people need more and more electricity, cars and other things. so more greenhouse gases have been added to the atmosphere. this causes more heat to be trapped than in the past. this is called the green

28、house effect.1. the subject discussed in the passage is _.a. the growing population of the worldb. the global average surface temperaturec. the increasing greenhouse effect d. the causes of air and water pollution2. according to a wmo official, it is _ that should be blamed for global warming.a. mod

29、ern factories impressive            b. mankindc. carbon dioxide                               d. burning fuels3. the rising of the earth temperature will finally re