新高考英语一轮复习练习考向55 阅读理解之语篇知识与主旨类试题题的深层理解策略（2份打包，原卷版+解析版）

这是一份新高考英语一轮复习练习考向55 阅读理解之语篇知识与主旨类试题题的深层理解策略（2份打包，原卷版+解析版），文件包含新高考英语一轮复习练习考向55阅读理解之语篇知识与主旨类试题题的深层理解策略原卷版doc、新高考英语一轮复习练习考向55阅读理解之语篇知识与主旨类试题题的深层理解策略解析版doc等2份试卷配套教学资源，其中试卷共32页， 欢迎下载使用。
【策略学习】
文章大意题
文章大意题主要是测试考生对一篇文章的深层理解程度以及在速读中准确定位文章主旨大意的能力。它要求考生在理解全文的基础上能较好地运用概括、判断、归纳、推理等逻辑思维的方法，对文章进行高度概括或总结，属于高层次题。
策略1：主题句法
解答主旨大意题，找准文章的主题句是关键。下面介绍两种快速找出主题句的方法。
(1)根据文体和写作手法来定位主题句
(2)根据行文标志来定位主题句
策略2：高频词法
全文中无明显主题句时，我们可以利用文章中的高频词。任何一篇文章都是围绕某个主题展开的，因此，有的文章中最明显的特点之一是有一个反复出现的中心词，即高频词，也叫做主题词。抓住了它，便容易抓住文章的中心。
策略3：逆向思维法
在两个选项看上去都十分正确无法选择时，试着从选项出发，想象一下如果自己以此选项来写文章会有哪些内容，然后把它与文章的内容比较，接近的即为正确选项。
1. 正确选项特征：涵盖性强，覆盖全文
2. 错误选项特征
(1)以偏概全，主次不分
(2)无中生有，曲解文意
【典例】 (2020·全国卷Ⅱ阅读B)
Sme parents will buy any high－tech ty if they think it will help their child，but researchers said puzzles help children with math－related skills.
Psychlgist Susan Levine，an expert n mathematics develpment in yung children at the University f Chicag，fund children wh play with puzzles between ages 2 and 4 later develp better spatial skills.Puzzle play was fund t be a significant predictr f cgnitin(认知)after cntrlling fr differences in parents’ incme，educatin and the amunt f parent talk，Levine said.
The researchers analyzed vide recrdings f 53 child－parent pairs during everyday activities at hme and fund children wh play with puzzles between 26 and 46 mnths f age have better spatial skills when assessed at 54 mnths f age.
“The children wh played with puzzles perfrmed better than thse wh did nt，n tasks that assessed their ability t rtate(旋转)and translate shapes，”Levine said in a statement.
The parents were asked t interact with their children as they nrmally wuld，and abut half f the children in the study played with puzzles at ne time.Higher－incme parents tended t have children play with puzzles mre frequently，and bth bys and girls wh played with puzzles had better spatial skills.Hwever，bys tended t play with mre cmplex puzzles than girls，and the parents f bys prvided mre spatial language and were mre active during puzzle play than the parents f girls.
The findings were published in the jurnal Develpmental Science.
27. What is the text mainly abut?
A. A mathematical methd.
B. A scientific study.
C. A wman psychlgist.
D. A teaching prgram.
【分析】
·第一步 读文章，概括文意：本文介绍了芝加哥大学的一项科学研究，该研究表明，对于2到4岁的孩子来说，玩拼图游戏对他们今后空间技能的提高有益；高收入家庭的孩子接触拼图游戏的时间更长，而且男孩子比女孩子玩的拼图更复杂。
·第二步 利用关键词法定主旨：文章多次出现了researchers，expert，study，findings等词，主要介绍的是一项科学研究。
·第三步 排除3种错误选项：选项A、D无中生有曲解文意； 选项C以偏概全主次不分。
段落大意题
段落大意题主要考查段落的主要意思，是对一个段落的基本内容的简缩和概括。概括、总结、归纳段落大意就是用准确的、简练的语言把一个段落的主要意思明确而完整地表达出来。
做题时要特别注意“首尾兼顾”，即所问段落的首句和尾句。一是因为它们往往体现主旨要义，二是因为利用这些信息可以迅速提炼段落结构框架，在框架下的主旨判断，其准确性更高。
【典例】 (2020·全国卷Ⅰ阅读D)
The cnnectin between peple and plants has lng been the subject f scientific research.Recent studies have fund psitive effects.A study cnducted in Yungstwn，Ohi，fr example，discvered that greener areas f the city experienced less crime.In anther，emplyees were shwn t be 15% mre prductive when their wrkplaces were decrated with huseplants.
32. What is the first paragraph mainly abut?
A. A new study f different plants.
B. A big fall in crime rates.
C. Emplyees frm varius wrkplaces.
D. Benefits frm green plants.
【分析】
·第一步 首尾兼顾定段意：通读全文可知，Recent studies have fund psitive effects.是本段的主旨，后通过列举两项科学研究来说明绿色植物对人类的好处。
·第二步 析选项，斟酌判断：
·第三步 比对选项得出答案。
标题归纳题
标题归纳类题目要求考生在理解文章的基础上，结合文章的体裁和结构，从所给选项中选出适合文章的标题。注意最佳标题的特点：精准性强(不改变原文的意义和感情色彩)；覆盖性强(能概括全文并体现文章的主旨)。
要首先找出文章的主题句，然后根据文章主题句确定文章标题，如果没有主题句再寻找全文重复性强的关键词或者概括全文。
▲ 利用4大技巧解题
▲结合3大特点解题
▲排除3种错误选项
【典例】 (2020·浙江7月卷阅读C)
Challenging wrk that requires lts f analytical thinking，planning and ther managerial skills might help yur brain stay sharp as yu age，a study published Wednesday in the jurnal Neurlgy suggests.
Researchers frm the University f Leipzig in Germany gathered mre than 1，000 retired wrkers wh were ver age 75 and assessed the vlunteers’ memry and thinking skills thrugh a battery f tests.Then，fr eight years，the scientists asked the same grup t cme back t the lab every 18 mnths t take the same srts f tests.
Thse wh had held mentally stimulating(刺激)，demanding jbs befre retirement tended t d the best n the tests.And they tended t lse cgnitive(认知) functin at a much slwer rate than thse with the least mentally challenging jbs.The results held true even after the scientists accunted fr the participants’ verall health status.
“This wrks just like physical exercise，”says Francisca Then，wh led the study.“After a lng run，yu may feel like yu’re in pain，yu may feel tired.But it makes yu fit.After a lng day at wrk—sure，yu will feel tired，but it can help yur brain stay healthy.”
It’s nt just crprate jbs，r even paid wrk that can help keep yur brain fit，Then pints ut.A waiter’s jb，fr example，that requires multitasking，teamwrk and decisin－making culd be just as stimulating as any high－level ffice wrk.And “running a family husehld requires high－level planning and crdinating(协调)，”she says.“Yu have t rganize the activities f the children and take care f the bills and grceries.”
Of curse，ur brains can decline as we grw lder fr lts f reasns—including ther envirnmental influences r genetic factrs.Still，cntinuing t challenge yurself mentally and keeping yur mind busy can nly help.
30. Which f the fllwing is the best title fr the text?
A. Retired Wrkers Can Pick Up New Skills
B. Old Peple Shuld Take Challenging Jbs
C. Yur Tugh Jb Might Help Keep Yu Sharp
D. Cgnitive Functin May Decline As Yu Age
【分析】
·第一步 找准文章的主题句：通读全文，本文是“总—分”结构，文章开头提出主旨“Challenging wrk that requires lts f analytical thinking，planning and ther managerial skills might help yur brain stay sharp as yu age”。
·第二步 根据正误选项特征，斟酌判断：A、B选项无中生有，曲解文意；D选项以偏概全；主次不分；选项C“棘手的工作可能会帮助你保持思维敏捷”精炼地概括了文章内容。
·第三步 比对选项得出答案。
【检测训练】
1
A number f cmpanies have used the wind, the sun and the grund heat t prduce energy. Nw, the Ocean Renewable Pwer Cmpany, r ORPC, is using the frce f flwing rivers and cean currents. The cmpany recently presented the new technlgy at an energy cnference. Christpher Sauer, the CEO and c－creatr f ORPC says the technlgy was designed fr small, rural cmmunities that d nt have easy access t pwer surces.
The ORPC technlgy is an energy generatr which can be put under water, called RivGen. It wrks in a series f steps. First, the generatr is put in the middle f a steel cage. The cage ges n tp f a wide bat with a flat bttm. Wheels— r, turbines (涡轮机) — are attached t each side f the generatr. Once the bat is fixed t ne place, it is flded with water. The bat, cage, and generatr all sink t the bttm f the river. There, the river current turns the wheels and creates as much as 50 kilwatts f pwer.
CEO Christpher Sauer says RivGen is nt very tall, s it can wrk in water areas that are nt very deep. Other cmpanies are nt able t wrk in shallw water, he adds. Sauer says the turbines are safe fr the animals that live in the river. Meanwhile, the turbines’ shape permits the generatr t harvest pwer frm tidal currents in the cean. The cmpany’s cean turbine, called TidGen, can create up t 600 kilwatts f electricity, enugh t pwer a small settlement.
Right nw, the amunt f pwer TidGen can harvest changes as the strength f the tide ges up and dwn. But ORPC wrkers are trying t make the pwer utput steady. In time, they want TidGen pwer t be part f the main energy grid (电网). Sauer estimates ORPC’ s current price is abut 50 cents per kilwatt－hur. That price des nt make the ORPC system cmpetitive with natural gas. Hwever, fr small rural cmmunities, diesel (柴油) energy can cst mre than $ 1 per hur. In these situatins, energy frm flwing water culd be mre ecnmical.
1. What des ORPC use t prduce electricity?
A. Wind.B. Sun.C. Water.D. Grund heat.
2. What’ s paragraph 3 mainly abut?
A. The wrking principle f RivGen.B. The design feature f RivGen.
C. The system cmpsitin f RivGen.D. The main functin f RivGen.
3. What’ s the advantage f RivGen?
A. It can wrk in shallw water.B. It can accelerate cean currents.
C. It can pwer a large settlement.D. It can increase the number f fish.
4. What des the underlined wrd “ecnmical” in the last paragraph prbably mean?
A. Pllutin－free.B. Mney－saving.
C. Mass－prductin.D. Resurce－cnsuming.
2
Siri Persichetti, seventeen years ld, can nt speak and feed himself. Siri has spastic tetraplegia, a disease that affects mvement in three f a persn's fur legs and arms. His muth is permanently pen, which prevents him frm frming wrds crrectly r swallwing. He is fed liquid nutritin thrugh a tube in his stmach. And he has had a trachetmy t help him breathe.
But he deals with his cnditin with such a lve fr life that his mther, Valentina, decided t create a website fr him. He made accunts n Facebk, Instagram and Twitter t share his everyday life. He shares heart-warming vides f himself under the title Siri and the Tetrabnds. The vides have tuched the hearts f peple all ver the wrld. “I wanted t tell the stry f disability in a different way, tell it fr what it is and give peple alike hpe,” Siri said.
The public’s reactin t yung Siri has been huge. Sme f his vides have been watched mre than130, 000 times. “In a shrt time, the respnse, especially frm families living in similar situatins, was pwerful and exciting s we decided t keep ging,” his mther said. Siri’s fllwers respnd with a cuntless number f “likes” and messages f supprt.
Siri said he wanted t end the stigma —- r unfair beliefs— that ften surrunds disability. I wanted t shw that children with special needs can still have fun and lead a happy life. Valentina said she never expected her sn t becme famus n scial media. “But we realized that is useful,” she added, “that it helps and is a necessary step t make the life f many peple much mre nrmal.”
5. What d we knw abut Siri frm Paragraph 1?
A. He was brn with the disease.
B. He is unable t use his arms and legs.
C. He relies n liquid nutritin t supprt life.
D. His disease has cst his family a great deal.
6. Why did Siri make accunts n scial media?
A. T inspire thers like him.
B. T raise mney fr his disease.
C. T find a pssible cure fr his disease.
D. T escape frm his bitter life fr the time being.
7. Which f the fllwing best describe Siri?
A. Optimistic.B. Ambitius.C. Cperative.D. Obedient.
8. What can be the best title fr the text?
A. An Unusual Disease Changes a Teenager’s Life
B. A Student with Disability Has Taken ff n the Internet
C. Thse at a Disadvantage Tend t Aruse Peple’s Sympathy
D. A Special Teenager Tries t Change Peple’s Ideas abut Disabilities
3
NO ONE EVER said science educatin was easy. Certainly the cncepts we teach, like cnservatin f mmentum r quantum mechanics, can be hard t grasp. But what really cmplicates the attempt is that we' re als trying t teach a deeper lessn at the same time — t help students understand the nature f science itself.
All t ften, yung peple get the impressin that science is abut learning certain “laws" and then applying them t different situatins. After all, that's what we make them d n tests, t shw that they've been ding the wrk. But that’s nt it at all. Science is the prcess f building these cncepts thrugh the cllectin f experimental evidence.
And while I'm n it, let's call these cncepts what they really are—nt laws, but mdels. Science is all abut building and testing mdels. It's difficult t help students understand that aspect f science when we just give them the mdels t begin with. Sure, in physics we ften include histrical r mathematical evidence t supprt big ideas , but that ften isn't enugh.
Of curse, we can't start frm nthing. If students had t build their wn mdels frm the grund up, it wuld be like trying t learn prgramming by inventing cmputers. As Isaac Newtn is suppsed t have said, we stand n the shulders f giants. We must take mdels built by thers and g frm there.
What I'd like t suggest is that this actually prvides a great way int the adventure f science and an pprtunity t meet ur bjectives as educatrs. If yu can create a situatin that challenges students' assumptins and prduces cnceptual cnflict, that's a great pprtunity fr learning.
9. What is the misunderstanding f teaching science?
A. It's cmplicated.B. It fcuses n the nature f science.
C. It's very difficult.D. It lies in leaching and testing “laws”.
10. Which way t teach science is highly recmmended by the authr?
A. Encuraging students t always start frm nthing.
B. Prviding students with sme mdels t fllw suit.
C. Guiding students t begin with mdels built by thers.
D. 0ffering students prf i supprt imprtant cncepts.
11. The authr cites Isaac Newtn's wrds t .
A. justify the experimentB. praise the statement
C. shw the achievementD. supprt the argument
12. What is the best title f die passage?
A. The Best Way t Teach Science
B. The Best Way f Cncept Building
C. The Best Way t Learn Science
D. The Best Way t Handle Cncept Cnflict
4
Every day we experiencc ne f the wnders f the wrld arund us withut even realizing it . It is nt the amazing cmplexity f televisin, nr the impressive tcchnlgy f transprt. The universal wnder we share and experience is ur ability t make nises with ur muths, and s transmit ideas and thughts t each ther’s minds. This ability cmes s naturally that we tend t frget what a miracle (奇迹）it is.
Obviusly, the ability t talk is smething that marks humans ff frm animals. Of curse, sme animals have pwers just as amazing. Birds can fly thusands f miles by bserving psitins f the stars in the sky in relatin t the time f day and year. In Nature’s talent shw, humans are a species f animal that have develped their wn special act. If we reduce it t basic terms, it’s an ability fr cmmunicating infrmatin t thers by varying sunds we make as we breathe ut.
Nt that we dn’t have ther pwers f cmmunicatin. Our facial expressins cnvey ur emtins, such as anger, r jy, r disappintment. The way we hld ur heads can indicate t thers whether we are happy r sad. This is s-called “bdy language”. Bristling (直立的) fur is an unmistakable warning f attack amng many animals. Similarly, the bwed head r drping tail shws a readiness t take secnd place in any animal gathering.
Such a means f cmmunicatin is a basic mechanism that animals, including human beings, instinctively acquire and display. Is the ability t speak just anther srt f instinct? If s, hw did human beings acquire this amazing skill? Bilgists can readily indicate that particular area f ur brain where speech mechanisms functin, but this desn’t tell us hw that part f ur bdies riginated in ur bilgical histry.
13. Accrding t the passage, the wnder we take fr granted is ________.
A. the miracle f technlgy
B. ur ability t use language
C. the amazing pwer f nature
D. ur ability t make nises with muth
14. What can be inferred frm Paragraph 3?
A. Bdy language is unique t humans.
B. Animals express emtins just as humans d.
C. Humans have ther pwers f cmmunicatin.
D. Humans are n different frm animals t sme degree.
15. What feature f “bdy language” is cmmn t bth humans and animals?
A. Lifting heads when sad.
B. Keeping lng faces when angry.
C. Bristling hair when ready t attack.
D. Bwing heads when willing t bey.
16. What’s the passage mainly abut?
A. The special rle humans play in nature.
B. The develpment f bdy language.
C. The difference between humans and animals in language use.
D. The pwer t cnvey infrmatin t thers.
5
Bird expert Stephen Kress remembers the first time he encuntered puffins (角嘴海雀). “I was ttally amazed frm the mment I saw them,” he says. Tw years after his first encunter, while teaching at a nature camp in Maine, Kress learned that the state's puffin clnies were all but destryed by hunters in the late 1800s. The puffins were killed fr their eggs, meat and feathers.
Kress decided t learn mre abut these “special birds.” His fascinatin grew int Prject Puffin, a decades-lng effrt t bring the puffins back t Maine. Kress ran the prject while wrking fr the Natinal Audubn Sciety, a majr bird cnservatin nnprfit in the US.
Prject Puffin’s rigins lie n an uninhabited seven-acre island, six miles ff the cast f Maine, called Easter Egg Rck. The tiny island, accessible nly by rwbat, is free frm predatrs (捕食者) and edged with rcks under which the puffins nest.
Starting in 1973, Kress’s team cllected chicks frm Greet Island, ff the cast f Newfundland, Canada, which had a healthy puffin ppulatin. The team hand -raised puffins in artificial hles, feeding them vitamin-enriched fish twice a day. “They wuld cme ut when they were six weeks ld and they wuld wrk their way t the edge f the island and swim ff,” says Kress.
Fr fur years, hwever, nne f the birds returned t the island t breed (繁殖). The prject’s supprters began t questin whether they wuld ever succeed. “That's when I began trying t think like a puffin,” Kress says.“Puffins nest in clnies because they like being with thers f their kind and large grups prvide prtectin frm predatrs.” He thught that the yung puffins did remember the island but were nt brave t cme ashre. Kress’s new idea was t place wden puffins arund the island, t help the birds feel safe. It wrked.
Thanks t his pineering methd, Prject Puffin says there are nw arund 1,300 pairs f puffins nesting n islands in the Gulf f Maine. What's mre, the techniques Kress develped t save puffins are nw used by seabird cnservatinists arund the wrld.
17. What happened t Maine’s puffins in the late 19th century?
A. They were well prtected.B. They were a turist attractin.
C. They were nearly ging extinct.D. They were raised fr their meat.
18. Why d Prject Puffin’s rigins lie n Eastern Egg Rck?
A. It is inaccessible t hunters.
B. It seems an ideal Puffin habitat.
C. It is near the Natinal Audubn Sciety.
D. It seems a perfect place fr bird-watching.
19. What inspired Kress t think like a puffin?
A. Finding prper fd fr puffins.
B. Digging artificial hles fr puffins.
C. Mving puffin chicks frm Great Island.
D. Getting adult puffins t breed at Eastern Egg Rck.
20. What may be the best title fr the passage?
A. A New Way t Save SeabirdsB. A Bird Cnservatin Nnprfit
C. A Bird Species t Be Hand-raisedD. A Great Seabird Migratin Prject
6
If there had t be a father f handwashing in histry, it wuld be Ignaz Semmelweis. While wrking at Vienna General hspital, the Hungarian dctr, faced with a situatin in which maternal death (孕产妇死亡) in hspitals were significantly higher than lcal clinics, tried hard clues as t why.
Germs (细菌) were yet t be discvered, and it was still believed in the 1840s that disease was spread by bad smells in the air. S it didn’t seem a prblem that trainee dctrs hanging ut f labs t dissect (解剖) human bdies wuld pp up t the maternity ward (产房) t deliver a baby withut washing their hands.
Then an accidental finger cut by a knife during a dissectin caused a dctr t die, seemingly f the same sign the mthers had been getting. Semmelweis assumed that smething frm the dead bdies was t blame, which might, thrugh the hands f dctrs, make their way int wmen’ s bdies during childbirth.
T test his thery, he rdered dctrs t wash their hands and instruments in sme chlrine slutin. As a result, the death rate fr new mthers drpped t abut 1 percent, cmpared with that f as high as 18 percent befre the experiment.
Hwever, he faced great resistance, and met a sad end. Peple at that time didn’t think f themselves as srt f walking Petri dishes. And the majrity f dctrs then were frm middle- r upper-class families, and thught f themselves as very clean peple.
Over the next 40 years, a better understanding f germs develped, and attitudes t hygiene (卫生) gradually shifted. In 1876, the German scientist Rbert Kch discvered the anthrax bacillus (炭疽), kicking ff the new research field f medical bacterilgy. Many mre germs were later identified. Surgens started t take handwashing seriusly.
By the 1890s and int the early 1900s, handwashing mved frm being smething dctrs did t smething everybdy had been tld t d.
21. What was the situatin like in the 1840s?
A. Germs might have been discvered then.
B. Wmen suffered frm delivering babies then.
C. The air at that time was dirty and full f viruses.
D. Peple were unaware f hw disease was spread.
22. What des the underlined wrd “Slutin” prbably mean?
A. Liquid.B. Optin.C. Tissue.D. Shell.
23. Hw did the public feel abut handwashing at first?
A. It was effective.B. It was necessary.
C. It was ridiculus.D. It was dangerus.
24. Which f the fllwing can be the best title f the passage?
A. Steps t Prtect Yurself
B. Disease Spreading by Yur Hand
C. Hand Washing Critical in Fighting Viruses
D. The First Recrded Discvery f Handwashing
7
Fractinal wnership is a percentage wnership f a specific asset (资产）. It has ften been used t share the wnership f expensive assets such as expensive bats, private planes and s n. When the value f the asset increases, the wnership shares d as well. C-wners als share equally the csts carried by the asset. Mst recently, the same cncept f fractinal wnership was applied t art as well. The lgic is the same. Multiple peple wn ne artwrk and share the benefits and the csts f the asset. Galleries and artists, instead f selling ne artwrk t ne persn, they can sell it t mre than 1000 art lvers.
C-wnership f art gives the pssibility t everyne t participate in the art market. The ptential market fr artwrks is suddenly way bigger. Only a few peple can affrd artwrks that cst mre than £100,000. But everyne can affrd t buy sme shares priced at £10 each. On tp f this, all c-wners share the csts invlved with the acquisitin f an artwrk. Fr art lvers that are just starting t cllect art fr investment (投资） reasns, c-wnership f art can be a great tl t start learning and understanding the market withut risking t much capital. Fr big cllectrs instead, sharing the wnership f an artwrk is an easy way t diversify their prtfli (投资组合） withut having the burden f managing the asset.
Fr many years nly wealthy peple culd affrd t buy expensive artwrks. Because f this, mst artwrks are hidden in private cllectins and dark strages since decades where the public has n access t. And, if we think that art is suppsed t deliver imprtant messages and tpics and is the representatin f ur past and present, it seems incredible that art has becme smething that few peple can fully enjy. Fractinal wnership f art, by giving everyne the pssibility t c-wn art, has the pwer t greatly change this. Suddenly, zxxk art becmes an asset available t everyne and, by being mre accessible, it starts t attract way mre peple.
25. Which f the fllwing is a kind f fractinal wnership?
A. A wealthy businessman wns a private ship.
B. A museum event is attended by 1000 art lvers.
C. Galleries and artists sld ne artwrk t ne persn.
D. 10 friends bught a huse priced at S10,000 tgether.
26. What is Paragraph 2 mainly abut?
A. The ptential market fr artwrks.
B. The surce f capital fr investment.
C. The benefit f fractinal wnership.
D. The develpment f fractinal wnership.
27. What might the authr agree t?
A. Art cntributes greatly t scial ecnmy.
B. C-wnership f art benefits the general public.
C. Only wealthy peple culd affrd expensive artwrks.
D. Fractinal wnership is a way t invest withut risk.
转折词
如but，hwever，in fact，actually等时，其后的内容往往是作者真正想要表达的观点。
总结词
如therefre，thus，in shrt，cnclude 等，其后的内容往往是文章的主题。
疑问句
若首段出现疑问句时，对该问题的回答可能是文章的主题。
A
对不同植物的一项新研究。原文中提到对绿色植物的研究，但不是该段的主旨。
以偏概全
断章取义
B
犯罪率大幅下降。用犯罪率下降来证明的是绿色植物的好处，故混淆主次。
以偏概全
断章取义
C
来自不同工作场所的员工。虽涉及工作场所的员工，但是以偏概全，不是本段的主题。
以偏概全
生搬硬套
D
绿色植物的好处。本段主旨就是列举两项科学研究来说明绿色植物对人类的好处。该项是对本段内容的精炼总结和概括
涵盖性强，
覆盖全段
关键词法
反复出现的词语，多次重复的观点就是体现主旨的关键词
主题句法
根据文章主题句，确定中心词充当标题
穿珠连串法
分析文章细节，确定共同点，如同穿珠般，串联细节共同点，确定标题
逆向法
根据四个选项，考虑其可能内容，对照原文，最相似者为最佳选项