Unit 2 单元话题语法填空练习-2022-2023学年高一英语必修第二册单元重难点易错题精练（人教版2019）.docx

1、 Unit 2单元话题语法填空专项练习(名校最新真题)（2021辽宁沈阳高一期末）阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。The first zoo was established around 3,500 years ago by an Egyptian queen for her _1_ (person) enjoyment. Five hundred years later, a Chinese emperor built a huge zoo to show his power and wealth. Later zoos were set up for the

2、 purpose of _2_ (study) animals .Some of the early European zoos consisted of dark holes or dirty cages, the bad conditions of _3_ made people disgusted (厌恶的). Later the zoos _4_(replace) by research centers and animals there were studied and kept in good condition. These places became the first mod

3、ern zoos. As early as the 1940s, scientists understood that many kinds of wild animals were faced _5_ extinction. Since then, zoos have been trying to save many endangered species, but relying on zoos _6_ (save) species, is not enough. The best method of protection is to leave them in their natural

4、habitat. Today animals in large and natural reserves (保护区) are fed with a balanced diet and are watched _7_ (careful) for any sign of disease. With specially trained _8_ (keep) looking after them and some hospitals where they can receive treatment when ill, all the animals there live _9_ comfortable

5、 life. Anyway, _10_ is true that zoo breeding programs have played an important role in the attempt to save many species of wildlife.（2022海南琼海市嘉积第二中学高一期末）阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。Last year I spent a day on the plain in Tibet observing Tibetan antelopes . _11_ (watch) them move slowly across t

6、he green grass, I _12_ ( strike) by their beauty. I was also reminded _13_ the danger they were in. The 1980s and 1990s were bad times for Tibetan antelopes. They were being hunted _14_ (illegal) for their valuable fur _15_ the number dropped rapidly. In order to save this species from extinction, t

7、he Chinese government has taken some _16_(effect) measures and much _17_ ( do) by the volunteers in the past few years. Now the antelope population has recoverd and the Tibetan antelope has been removed from _18_ endangered species list. The government, _19_ , does not intend to stop the protection

8、programmes, since the _20_ (threat) to the Tibetan antelope have not yet disappeared.（2022全国高一课时练习）语法填空The 1975 film Jaws described a scene where a woman swimming in a dark sea _21_(attack) by a great white shark and finally was eaten by it, which made people consider the great white shark as _22_ d

9、angerous animal.Being _23_(scared) of sharks than ever, some people started fishing for sharks, _24_(kill) as many as they could. As a result, the number of large sharks around America fell quickly. _25_(fin) is a type of fishing where sharks are caught and their fins cut off. The sharks are thrown

10、back into the sea where they die slowly and _26_(painful). Finning kills millions of sharks a year.In 1980, Benchley, the man _27_ wrote the book the film Jaws was based on, was diving when he came across an awful sight. The sea floor was covered with dead sharks because of finning. He came to see p

11、eople as a danger to sharks, rather than the other way round. From that day on, he fought _28_(protect) sharks. _29_(expert) have proved that sharks do not see people as food, and they attack us by mistake. Only a few people are killed by sharks every year.Fortunately, some people began to protect s

12、harks. Today, as we learn more about sharks, more people than ever want to protect them _30_ extinction.（2020贵州贵阳高一期末）阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。There are a great number of festivals around the world every year, most of which are just for human beings._31_ (actual), there is one day for ani

13、malsWorld Animal Day.World Animal Day is a day on_32_the whole world cares for animals and_33_ (work) towards the health and happiness of animals. It_34_(hold) on October 4th of each year. The goal is to make_35_earth a better place for these human friends.World Animal Day can be celebrated in many

14、different_36_(way). One way is that people can buy some books on how to protect animals to educate_37_(they). Meanwhile, what people can also do is to email their local newspaper or social media website to tell them the_38_(important) of the day. Other possible ways include donating or_39_(volunteer

15、) at local shelters; adding animal-friendly equipment_40_your garden such as birdbaths; adopting a homeless animal or even just buying your favorite animal a special meal.（2022全国高一课时练习）语法填空Many kinds of dinosaurs bones_41_(find) recently by Chinese scientists in Nanyang, Henan Province. When the _42

16、_(scientist) inspected the bones, they were surprised _43_(spot) these dinosaurs could not only run like the others but also climb the trees.Dinosaurs died out _44_(sudden) around 60million years ago. Some scientists think _45_came after a(n)_46_(expect) incident when a huge rock from space hit the

17、earth _47_ put too much dust into the air. Others think the earth got too hot for the dinosaurs to live on any _48_(much). Nobody knows for sure _49_and how dinosaurs _50_(disappear) from the earth in such a short time.（2022陕西西安高一期末）阅读下面短文, 在空白处填入1个适当的单词或括号内单词的正确形式。Ethiopia has broken the world reco

18、rd for the largest number of trees planted in one day, while simultaneously (同时) _51_ (make) the world a little greener. Ethiopians planted more than 350 million _52_(tree) in just 12 hours earlier this week. This broke the previous record, held by India, by 50 million trees. Ethiopias Minister of I

19、nnovation and Technology _53_(proud) stated that people had planted 353, 633, 660 trees to help the environment. Prime Minister Abiy Ahmed, who took part _54_ the tree planting festivities, congratulated everyone involved in the record on _55_they had achieved. Ethiopias record-breaking achievement

20、is part of a wider plan of planting 4 billion trees between May and October. The country is well on _56_ (it) way to achieving this goal. So far, volunteers, businesses and government workers _57_(plant) more than 2. 6 billion trees nationwide. Ethiopia is attempting to reverse (彻底转变) the cutting do

21、wn of its forests. The Farm Africa organization reports that less than 4 percent of Ethiopias land is forested. This is down from 30 percent at _58_end of the 19th century. A recent study reported that planting billions of trees was the _59_(cheap) and most effective way to absorb carbon dioxide as

22、well as other _60_(harm) gases and thus help to fight global warming.（2022全国高一课时练习）阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。Being curious about birds has let many people take up bird-watching in Shanghai. Many take it as _61_opportunity to spend time outdoors and get close to nature.The most careful bird-wat

23、chers are usually equipped with binoculars(望远镜) and smart phones, and travel long distances and spend hours in shoals(浅滩) in Nanhui or Chongming _62_ (observe) a new bird. Tens of _63_ (studio) provide such public events _64_ (regular).More than 430 types of birds, about one-third of the total bird

24、numbers in China, can _65_ (see) in Shanghai. Most of birds in the city are migratory (迁徙的), _66_ (pass) by the southeastern tip of the city.The eastern shoals of Nanhui and Chongming,_67_ the Yangtze River meets the East China Sea, are very _68_ (significance) for migratory birds, because they stop

25、 to find food in spring and autumn while traveling between North and East Asia and Australia or Southeast Asia. The growing interest _69_ bird-watching in Shanghai _70_ (play) an effective role in environmental protection now.（2022河南新乡高一期末）阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。A research paper reported th

26、at the Chinese paddlefish (白鲟) has been declared extinct.The species, reaching up to seven meters in _71_ (long), became a popular target for fishermen. In the 1970s, 25 tons of paddlefish _72_ (harvest) per year on average. But the construction of the Gezhouba Dam changed the habitat of paddlefish

27、_73_ (absolute). Populations of the fish continued to decrease in 1981, but nobody had yet figured out _74_ terrible the situation was. The researchers said the fish had become functionally extinct by 1993, _75_ (mean) there were not enough fish to meaningfully reproduce.Pan Wenjing, _76_ is an ocea

28、n expert with Greenpeace East Asia, told The Associated Press the extinction of the Chinese paddlefish is “_77_ huge loss” for nature and the Yangtze River is experiencing major environmental damage.“The ecosystem of the Yangtze River is close to _78_ (it) breaking point due to human activities in p

29、ast decades,” Pan said. “The paddlefishs extinction should serve _79_ a wake-up call to protect other freshwater species. We have the responsibility _80_ (balance) the needs of humans with the needs of life in rivers and seas. Humans should not live alone on this planet.”参考答案：1personal2studying3whic

30、h4were replaced5with6to save7carefully8keepers9a10it【导语】本文是一篇说明文。文章主要介绍了动物园的由来及其所发挥的作用。1考查形容词。句意：第一个动物园是大约3500年前由一位埃及王后为她的个人娱乐而建立的。修饰名词enjoyment，前用形容词形式。故填personal。2考查非谓语动词。句意：后来，动物园的建立是为了研究动物。介词of后接动名词形式。故填studying。3考查定语从句。句意：一些早期的欧洲动物园由黑暗的洞或肮脏的笼子组成，恶劣的环境让人厌恶。此处是介词+关系代词引导的定语从句，句中先行词为dark holes or d

31、irty cages，指物，定语从句中缺少介词of作宾语，所以用关系代词which引导。故填which。4考查时态和语态。句意：后来，动物园被研究中心所取代，那里的动物被研究并保存得很好。根据句中时态可知，用一般过去时。主语the zoos与replace之间为被动关系，所以用被动语态，主语是复数。故填were replaced。5考查介词。句意：早在20世纪40年代，科学家就认识到许多种类的野生动物正面临灭绝。be faced with面临， 面对。故填with。6考查非谓语动词。句意：从那以后，动物园一直在努力拯救许多濒危物种，但仅靠动物园来拯救物种是不够的。rely on sb. to

32、do sth.依靠某人来做某事。故填to save。7考查副词。句意：今天，大型和自然保护区的动物被喂以均衡的饮食，并被仔细观察任何疾病的迹象。修饰动词，用副词形式。故填carefully。8考查名词。句意：有经过专门训练的饲养员照顾它们，还有一些医院可以在它们生病时接受治疗，那里所有的动物都过着舒适的生活。形容词trained后接名词形式。名词keeper(饲养员)为可数名词，泛指，所以用名词的复数形式。故填keepers。9考查冠词。句意：有经过专门训练的饲养员照顾它们，还有一些医院可以在它们生病时接受治疗，那里所有的动物都过着舒适的生活。live alife过着的生活。形容词comfor

33、table发音以辅音音素开头，所以用不定冠词a。故填a。10考查代词。句意：无论如何，动物园的繁殖计划在拯救许多野生动物物种的努力中发挥了重要作用，这是事实。分析句子结构可知，本句that从句为主语从句，it作形式主语，真正的主语为that从句。故填it。11Watching12was struck13of14illegally15and#so16effective17has been done18the19however20threats【导语】本文是一篇说明文。讲述的是作者去年在西藏的平原上花了一天时间观察藏羚羊的经历，同时也揭示了藏羚羊过去和现在的生存状况。11考查非谓语动词。句意：看着

34、它们慢慢地穿过绿色的草地，我被它们的美丽迷住了。设空处watch与I之间是主动关系，且表示伴随，故应该用现在分词当状语。该空置于句首，首字母应该大写。故填Watching。12考查动词时态语态。句意：看着它们慢慢地穿过绿色的草原，我被它们的美丽迷住了。句中I和strike之间是被动关系，同时时间是last year，所以用一般过去时的被动语态，主语是I。故填was struck。13考查固定搭配。句意：我也想起他们身处险境。句中remind sb of sth为固定短语，意为“使某人想起”，of符合句意，故填of。14考查副词。句意：它们因其珍贵的皮毛而被非法猎杀，因此/并且数量迅速下降。句中

35、应该使用illegal的副词修饰were being hunted 动词。故填illegally。15考查连词。句意：同上。分析句子，设空处应该填写连词，连接前后句子，前后两句表示的是并列或者因果关系。故填and/so。16考查形容词。句意：为了拯救这个物种免于灭绝，在过去几年里中国政府采取了一些有效的措施，志愿者做了很多工作。句中使用effect的形容词作定语。故填effective。17考查动词时态语态和主谓一致。句意：同上。句中in the past few years意为“在过去的几年间”，为现在完成时的时间标志，句中主语为much，指代不可数名词，谓语动词用单数，其与do之间是被动关

36、系。故使用现在完成时的被动语态。故填has been done。18考查冠词。句意：现在羚羊的数量已经恢复，藏羚羊已经从濒危物种名单中删除。句中endangered species list意为“濒危物种名单”，此处表示的是特指，故填the。19考查副词。句意：然而，政府并不打算停止保护计划，因为对藏羚羊的威胁还没有消失。该句与前文之间构成转折关系，且与前后文有逗号隔开，故用副词however。故填however。20考查名词。句意：同上。设空处应该填写名词作主语。threat为可数名词，意为“威胁”，由下文的have可知，此处表示复数意义。故填threats。21was attacked22

37、a23more scared24killing25Finning26painfully27who#that28to protect29Experts30from#against【导语】这是一篇说明文。文章主要说明了1975年的电影大白鲨让人们认为大白鲨是危险的动物，鲨鱼遭到大量捕杀，人们逐渐认识到对鲨鱼的残忍行为，开始保护鲨鱼。21考查时态语态。句意：1975年的电影大白鲨描述了一个女人在黑暗的大海中游泳时被大白鲨袭击并最终被它吃掉的场景，这让人们认为大白鲨是危险的动物。主语与谓语构成被动关系，结合上文The 1975 film可知为一般过去时的被动语态，主语为a woman，谓语用单数。故填

38、was attacked。22考查冠词。句意：1975年的电影大白鲨描述了一个女人在黑暗的大海中游泳时被大白鲨袭击并最终被它吃掉的场景，这让人们认为大白鲨是危险的动物。animal为可数名词，此处为泛指且dangerous是发音以辅音音素开头的单词，故填a。23考查比较级。句意：由于比以往任何时候都更害怕鲨鱼，一些人开始捕捞鲨鱼，尽可能多地捕杀鲨鱼。作表语，修饰人应用-ed结尾形容词scared，结合后文than ever可知应用比较级，在前面加more。故填more scared。24考查非谓语动词。句意：由于比以往任何时候都更害怕鲨鱼，一些人开始捕捞鲨鱼，尽可能多地捕杀鲨鱼。分析句子结构可

39、知kill在句中应用非谓语动词形式，与逻辑主语people构成主动关系，故用现在分词作状语。故填killing。25考查非谓语动词。句意：取鳍是一种捕鱼方式，鲨鱼被捕获后，它们的鳍被切断。作句子的主语，fin应用动名词形式，句首单词首字母要大写。故填Finning。26考查副词。句意：鲨鱼被扔回大海，在那里它们缓慢而痛苦地死去。修饰动词die应用副词painfully，作状语。故填painfully。27考查定语从句。句意：1980年，本奇利，电影大白鲨的原著作者，在潜水时遇到了可怕的一幕。定语从句修饰先行词man，先行词在从句中作主语，指人，故用who或that。故填who/that。28考

40、查非谓语动词。句意：从那天起，他为保护鲨鱼而战。此处为短语fight to do sth.表示“为而战”。故填to protect。29考查名词的数。句意：专家们已经证明，鲨鱼并不把人当作食物，它们攻击我们纯属失误。expert为可数名词，前文没有冠词，表示数量大于一应用复数形式。句首单词首字母要大写。故填Experts。30考查介词。句意：今天，随着我们对鲨鱼的了解越来越多，越来越多的人想要保护它们免遭灭绝。此处为短语protect from/against表示“免于”。故填from/against。31Actually32which33works34is held35the36ways37

41、themselves38importance39volunteering40to【导语】这是一篇说明文。文章介绍了世界动物日的意义以及人们可以做什么来庆祝世界动物日。31考查副词。句意：事实上，有一个动物节日世界动物日。分析句子可知，空格处应该填入一个副词作状语来修饰整个句子，首字母大写。故填Actually。32考查定语从句。句意：世界动物日是全世界爱护动物，为动物的健康和幸福而努力的日子。分析句子可知介词on后面是一个“介词+关系代词”引导的定语从句，空格处应该填入一个指物的关系代词代替先行词a day作介词on的宾语。故填which。33考查时态和主谓一致。句意：世界动物日是全世界爱护动

42、物，为动物的健康和幸福而努力的日子。根据空格前的连词and可知空格处应该填入一个和前面的cares并列的从句谓语动词形式，从句主语为单数the whole world，一般现在时。故填works。34考查时态语态和主谓一致。句意：它在每年的10月4日举行。空格前的it代指的是World Animal Day，所以it和动词hold是被动关系，所以要用被动语态；根据后面的时间状语each year可知本句应该用一般现在时，主语第三人称，谓语单数形式。故填is held。35考查冠词。句意：目标是让地球成为人类更好的地方。根据空格后的名词earth可知空格处应该填入定冠词the用来指世界上独一无二

43、的事物“地球”。故填the。36考查可数名词单复数。句意：庆祝世界动物日的方式有很多。根据空格前的many different可知，空格处应该填入可数名词的复数形式。故填ways。37考查代词。句意：一种方法是人们可以买一些关于如何保护动物的书籍来教育他们自己。句子的主语people和谓语动词educate的宾语指的是同一人，所以要用反身代词作宾语。故填themselves。38考查名词。句意：与此同时，人们还可以给当地报纸或社交媒体网站发邮件，告诉他们这一天的重要性。根据句意和空格前的冠词the以及所给的形容词important可知，空格处应该填入important的名词形式。故填impor

44、tance。39考查动名词。句意：其他可能的方式包括捐赠或在当地庇护所做志愿者；给你的花园添置一些动物友好型的设备，比如水盆；收养一只无家可归的动物，甚至只是给你最喜欢的动物买一顿特别的饭。根据空格前的连词or可知，空格处应该填入一个和donating并列的动名词形式作宾语。故填volunteering。40考查介词。句意：其他可能的方式包括捐赠或在当地庇护所做志愿者；给你的花园添置一些动物友好型的设备，比如水盆；收养一只无家可归的动物，甚至只是给你最喜欢的动物买一顿特别的饭。根据前面的动词add可知，此题是考查固定搭配“addto(向添加)”。故填to。41have been found42

45、scientists43to spot44suddenly45it46unexpected47and48more49why50disappeared【导语】这是一篇议论文。文章介绍了人们对于恐龙灭绝的不同观点。41考查动词时态。句意：最近，中国科学家在河南省南阳发现了很多种恐龙骨骼。由recently可知，本句为现在完成时，主语many kinds of dinosaurs bones与动词find之间是被动关系，需用现在完成时的被动语态。故填have been found。42考查名词复数。句意：当科学家们检查这些骨头时，他们惊讶地发现这些恐龙不仅能像其他恐龙一样奔跑，而且能爬树。由主句的主

46、语they可知，参与研究的不止一位科学家，此处scientist需用复数形式。故填scientists。43考查非谓语动词。句意：当科学家们检查这些骨头时，他们惊讶地发现这些恐龙不仅能像其他恐龙一样奔跑，而且能爬树。固定短语be surprised to do sth“惊讶地做某事”。故填to spot。44考查副词。句意：恐龙在大约6千万年前突然灭绝了。此处修饰动词短语die out，需用副词，作状语。故填suddenly。45考查代词。句意：一些科学家认为恐龙灭绝是在一次意外事件之后发生的，当时太空中的一块巨石击中地球，在空气中扬起太多的灰尘。分析句子结构可知，宾语从句中缺少主语，根据句意

47、可知，主语指的是恐龙灭绝，需用代词it来指代。故填it。46考查形容词。句意：一些科学家认为恐龙灭绝是在一次意外事件之后发生的，当时太空中的一块巨石击中地球，在空气中扬起太多的灰尘。此处修饰名词incident，需用形容词unexpected，表示“意料之外的”。故填unexpected。47考查连词。句意：一些科学家认为恐龙灭绝是在一次意外事件之后发生的，当时太空中的一块巨石击中地球，在空气中扬起太多的灰尘。根据句意可知，hit与put为并列关系，需用连词and。故填and。48考查固定搭配。句意：其他人则认为地球变得太热了，恐龙无法再生存下去。固定搭配not.any more意为“不再”。

48、故填more。49考查宾语从句。句意：没人确切地知道恐龙为什么以及如何会在这么短的时间内从地球上消失。分析句子可知，why和how是指“原因和方式”，此处表示人们对恐龙消失的困惑；why和how引导宾语从句，在从句中作状语。故填why。50考查动词时态。句意：没人确切地知道恐龙为什么以及如何会在这么短的时间内从地球上消失。“恐龙从地球上消失”是发生在过去的事，此处需用一般过去时态。故填disappeared。51making52trees53proudly54in55what56its57have planted58the59cheapest60harmful【导语】这是一篇说明文。文章主要介

49、绍了埃塞俄比亚一天内树木种植量打破了世界纪录，其目的是让世界更环保。51考查状语从句的省略。句意：埃塞俄比亚打破了一天种植树木最多的世界纪录，同时也让世界变得更加绿色了。当时间状语从句的主语与主句主语一致，且有be动词时，可以省略从句的主语及be动词，此处完整句子为while simultaneously (同时) Ethiopia is making the world a little greener.省略Ethiopia is，保留现在分词making。故填making。52考查名词复数。句意：本周早些时候，埃塞俄比亚人仅在12小时内就种植了3.5亿棵树。tree是可数名词，由more

50、than 350 million修饰，应用复数形式。故填trees。53考查副词。句意：埃塞俄比亚创新和技术部长自豪地宣布，人们已经种植了353633660棵树来改善环境。修饰动词stated(陈述；宣布)，应用副词proudly。故填proudly。54考查介词。句意：参加植树庆祝活动的总理阿比艾哈迈德向所有参与这项记录的人表示祝贺，祝贺他们所取得的成就。固定搭配take part in“参加”，故填in。55考查宾语从句。句意：参加植树庆祝活动的总理阿比艾哈迈德向所有参与这项记录的人表示祝贺，祝贺他们所取得的成就。此处引导宾语从句，且从句中缺少动词achieved的宾语，应用what来引导

51、，指代“的东西”。故填what。56考查代词。句意：该国正朝着实现这一目标迈进。此处修饰名词way，应用形容词词性物主代词its，作定语。故填its。57考查时态。句意：到目前为止，志愿者、企业和政府工作人员已经在全国范围内种植了超过26亿棵树。由so far可知，应用现在完成时，主语是复数，助动词用have。故填have planed。58考查冠词。句意：这比19世纪末的30%有所下降。固定搭配at the end of“在结束时”。故填the。59考查形容词最高级。句意：最近的一项研究报告说，种植数十亿棵树是吸收二氧化碳和其他有害气体的最廉价和最有效的方法，从而有助于对抗全球变暖。此处与m

52、ost effective是并列成分，表示“最便宜的”，应用形容词最高级cheapest。故填cheapest。60考查形容词。句意：最近的一项研究报告说，种植数十亿棵树是吸收二氧化碳和其他有害气体的最廉价和最有效的方法，从而有助于对抗全球变暖。此处修饰名词gases，应用形容词harmful“有害的”，作定语。故填harmful。61an62to observe63studios64regularly65be seen66passing67where68significant69in70is playing【导语】本文为记叙文。文章介绍了上海兴起的观鸟热潮，激发了民众对于环保的关注。61考查

53、冠词。句意：许多人把它作为一个在户外接近自然的机会。根据句意可知及后面的opportunity，这里泛指“一个机会”，用不定冠词，且该词为元音音素开头。故填an。62考查非谓语动词。句意：最细心的观鸟者通常会带着双筒望远镜和智能手机，长途跋涉，花几个小时在南会或崇明的浅滩上观察一只新鸟。分析句子结构可知，句中已有谓语动词spend，设空处需填非谓语动词形式，与其逻辑主语bird-watchers为主动关系，根据句意可知，此处指“为了观察鸟类”，表示目的用to do不定式。故填to observe。63考查名词。句意：数十家工作室定期提供此类公共活动。根据前面的dozens of“数十个”可知，

54、设空处应填名词复数形式。故填studios。64考查副词。句意：数十家工作室定期提供此类公共活动。分析句子结构可知，设空处修饰谓语动词provide，应使用副词形式。故填regularly。65考查动词的被动语态。句意：在上海可以看到430多种鸟类，约占中国鸟类总数的三分之一。分析句子结构可知，设空处在句中充当谓语，其主语为birds，二者之间为被动关系，应用被动语态，结合提示词可知，应填be seen。故填be seen。66考查非谓语动词。句意：城市里的大部分鸟类都是候鸟，路过城市的东南端。分析句子结构可知，设空处在句中为非谓语，与逻辑主语birds为主动关系。故填passing。67考查

55、定语从句。句意：长江与东海交汇的南汇和崇明东部浅滩是重要的候鸟栖息地。分析句子结构可知，该句为非限定性定语从句，修饰先行词The eastern shoals，且先行词在从句中充当地点状语。故填where。68考查词性转换。句意：长江与东海交汇的南汇和崇明东部浅滩是重要的候鸟栖息地。根据句意及提示词可知，上海的浅滩对于候鸟而言，是非常重要的，此处需要形容词作表语。故填significant。69考查介词。句意：在上海，人们对观鸟的兴趣日益浓厚，这对环境保护起到了有效的作用。名词interest表示“兴趣”时，常与介词in搭配。故填in。70考查动词时态。句意：在上海，人们对观鸟的兴趣日益浓厚，

56、这对环境保护起到了有效的作用。分析句子结构可知，设空处在句中作谓语，结合时间状语now可知，此处应使用现在进行时，主语为the growing interest，单数形式，谓语也用单数。故填is playing。71length72were harvested73absolutely74how75meaning76who77a78its79as80to balance【导语】本文是一篇说明文，介绍中华白鲟的捕捞史及灭绝情况，并引用专家的话来呼吁大家保护河流生物和海洋生物，平衡人类与这些物种的需求。71考查名词。句意：中华白鲟长达七米，是渔民们热门的捕捞对象。in length是固定短语，意为“

57、长度上”。故填length。72考查时态语态和主谓一致。句意：20世纪70年代，平均每年捕捞25吨白鲟。由时间状语In the 1970s可知，事情发生在过去，所以该句时态应为一般过去时。该句主语是25 tons of paddlefish，是复数形式，所以设空处的谓语动词也用复数形式，且paddlefish与动词harvest之间是被动关系，所以应用被动语态。故填were harvested。73考查副词。句意：但修建葛洲坝彻底改变了中华白鲟的栖息地。分析句子结构可知，设空处需填副词absolutely作状语，修饰谓语changed。故填absolutely。74考查宾语从句。句意：1981

58、年，鱼群数量继续减少，但是当时人们还没有意识到情况有多糟糕。空处引导宾语从句，修饰terrible ，作程度状语，故填how。75考查非谓语动词。句意：研究人员称，到1993年，这种鱼在功能上已经灭绝，这意味着没有足够的鱼能够进行合理繁殖。分析句子结构可知，动词mean和从句谓语had become之间没有连词，所以要用非谓语形式。此处表示一种必然的结果，用现在分词作结果状语。故填meaning。76考查定语从句。句意：东亚绿色和平组织的海洋专家潘文婧告诉美联社，中华白鲟灭绝是大自然的“一大损失”，长江正在遭受重大环境破坏。分析句子结构可知，设空处需填引导词，引导非限制性定语从句，先行词是Pa

59、n Wenjing，指人，is an ocean expert是从句的系表结构，则设空处需填who，充当从句主语。故填who。77考查冠词。句意：东亚绿色和平组织的海洋专家潘文婧告诉美联社，中华白鲟灭绝是大自然的“一大损失”，长江正在遭受重大环境破坏。表示具体的损失时，loss是可数名词，此处表泛指，且huge 以辅音音素开头，所以设空处需填不定冠词a来修饰。故填a。78考查代词。句意：潘说：“过去几十年的人类活动，使得长江的生态系统面临崩溃。”修饰名词短语breaking point用形容词性物主代词，故填its。79考查介词。句意：中华白鲟灭绝警醒人类要保护其他淡水动物。结合句意，serve后面加介词as，再加名词作宾语，可表示“产生的效果、起的作用”。故填as。80考查非谓语动词。句意：我们有责任平衡人类的需求与河流生物和海洋生物的需求。responsibility后常接不定式作后置定语。故填to balance。