Unit 5 Humans and Nature A卷基础达标-【金试卷】2025-2026学年高二英语选择性必修第二册同步单元双测卷（北师大版）

第四部分写作 第一节 【范文赏读】 In my opinion,classroom teaching is better.The reasons are as follows. First of all,online teaching may affect learning results as it requires students to have relatively high self-control.Secondly,fixing our eyes on the phones or computers for a long time will harm our eyesight.In addition, since we can't communicate with our teachers face to face,it may be difficult for us to understand what the teacher explains. To sum up,I prefer classroom teaching to online teaching,for through classroom teaching I can concentrate and study more efficiently. 第二节 Hearing this,Maria felt her stomach turn."That's terrible.How could someone be so cruel to these adorable animals?Some action should be taken to protect them,"Maria said."Don't worry too much.It's better now,"said Uncle Rich."The government came to the rescue.There are around 50,000 now."Hearing this,Maria breathed a sigh of relief.And still holding her bag,Maria raced to her room.She kicked off her sneakers and pulled on the boots that Uncle Rich had prepared for her. She hurried back to the barn in a flash,and the mustang walked over to her slowly.Maria stepped on the fence and put her hand on his forehead.The mustang gently shook his head.At that very moment,Maria was determined to help the black beauty back to the wild and learn how to care for sick large animals from Uncle Rich.Moreover,she was now glad she had come to the farm.She was sure she would have an unforgettable vacation here Unit 5 Humans and Nature A卷基础达标 第二部分基础知识运用 21.proved 22.survived 23.conducted 24.shelters 25.ambition 26. suffering(s)27.prepare for 28.runs out 29.breaks down 30.turns his back on 31.on the edge of 32.was picked up 33.bravery考查词形转换。句意：在洪灾地区抗洪的战士们的勇敢给我们 留下了深刻的印象。分析句子结构可知，空处作介词by的宾语，再根据 空前的the可知，此处应用名词。 34to考查介词。句意：一旦对环境造成破坏，生态系统将要花费很多年来 恢复。damage to..,意为“对…的破坏”，是固定搭配。 35.anxiously考查副词。句意：观众在焦急地等着看哪个队伍会赢。空处 作状语，故用副词。 36.was interrupted考查动词的时态和语态。句意：他的演讲如此令人激 动，以至于不断地被欢呼声打断。根据was可知，此处陈述过去发生的事 情，应用一般过去时；it指代His lecture,且和interrupt之间是动宾关系， 故用被动语态。 37.Measured考查非谓语动词。句意：和我们竞争对手的报价相比，我们的报 价非常实在。our offer与measure是逻辑上的动宾关系，故用过去分词。 38.to rescue考查非谓语动词。句意：人们冒着生命危险，冲进被淹没的街 道去拯救被困在洪水中的陌生人。此处应用动词不定式作目的状语。 39.cheerful考查形容词。句意：Max勤奋、乐观并且诚实，这使得很多人喜 欢他。空处和hard-working,honest并列作表语，表示“乐观的”，故填 cheerful。 40.sincerity考查词形转换。句意：他希望留学生们能将中国人民的善意和 真诚传播到世界其他地方。此处作spread的宾语且和goodwil并列，故 用名词。 41.It is our duty to 42.attempts to attract 43.The reason why he achieved his ambition was that 44.How pleasant an experience it is 45.The harder;the better prepared 46.when high technology affects/influences 47.where考查定语从句。空处引导定语从句，指代先行词the islands,且在 从句中作地，点状语，故用where。 48.suddenly考查副词。空处作状语，故用副词。 49.fll考查动词的时态。根据语境可知，此处陈述过去发生的事情，故用一 般过去时。 50.the考查冠词。in the direction of..,.意为“朝着…的方向”，为固定 用法。 51.about考查介词。curious about意为“对…好奇”，是固定搭配。 52.observations考查名词复数。此处作made的宾语，应用名词，再根据空 前的three可知，此处应用名词复数。 53.frightened考查形容词。此处作表语，故用形容词，主语是he,此处表示 人的感受，故用frightened, 54.to escape考查非谓语动词。此处表目的，故用动词不定式。 55.was pulled考查动词的时态和语态。根据语境可知，此处陈述的是发生 在过去的事情，故用一般过去时；it(指代the boat)与pull之间是动宾关 系，故用被动语态。 56.but考查连词。根据语境可知，此处前后形成转折，故用but。 第三部分阅读理解 第一节 【语篇解读】本文是说明文。文章介绍了北极熊的生活习性和地球变暖给 北极熊带来的危害。 57.B细节理解题。根据第一段中的“They drift(漂移)for hundreds of miles.·.up for the winter.”可知，北极熊通常在夏天猎获食物。 58.B细节理解题。根据第二段最后一句“As a result,the world's polar bears..,by the end of this century..”可知，到本世纪末，北极熊将会全球 性灭绝。 59.A词句猜测题。根据第三段中的“Already,the ice on the southern edge of..to hunt,eat and store up fat..”可推知，画线部分的意思是“北极熊将 不得不在更长时间里处于饥饿状态”。 60.C推理判断题。根据最后一段第一句“Besides,a growing number of.. looking for ice sheets(冰原).”可知，北极熊为了寻找可以登陆的地方要 游得越来越远。 第二节 【语篇解读】文章讲述在发生自然灾害时，动物会出现一些异常行为，我们 应该关注动物发出的灾害警告。 61.C上文主要讲了印度洋附近发生的海啸造成了重大人员伤亡，第二段首 句“Yet in the minutes..to escape?”提到了灾难发生前，一些动物感觉到 了危险，因此空处应与本句形成转折，故C项符合语境。 62.A上文提到大象和鸡在灾难发生前的行为，下文提到了这些动物行为引 起了研究人员的关注，属于总结性的话语，由此可推知，中间应该还提到 另一类动物的反应。故选A项。 63.E上文提到了研究人员发现，农场动物在地震前会改变它们的行为。下 文“Just two weeks before the earthquake..four minutes”则分析动物行 为异常的原因，故前后之间需要一个过渡句。E项中的“And scientists also found'”与上文中的“researchers found”对应，“what might lead to the changes'”与下文的内容对应， 64.B上文中的“China...especially snakes'”提到了中国建立了一个地震预 警体系，监测动物的行为，尤其是蛇；再根据下文中的“snakes”可知，B项 承上启下，符合语境。 65.G下文提到仅仅依靠动物活动是不够的，人类需要依靠多种早期的预警 信号来了解情况。由此可推知，前面应该提到有些人怀疑动物预警的可 靠性。故选G项。 第四部分语言运用 第一节 【语篇解读】本文讲述Molai在l6岁时发现由于洪水的破坏，他家乡的鸟和 蛇的数量减少，于是他开始寻求解决方法。发现种树可以解决问题后，他坚 持种树多年，使1360英亩的天然土地成为许多动植物的家园。 66.C文章首句提到Molai在一个小村庄长大，结合语境可知，此处表示一 些湿地变成了他的第二个家(home)。 67.A根据上文提到的湿地和下文讲述的Molai为保护动物而种树可知，这 里指的是在很小的年纪，他就知道了自然(nature)的重要性和美丽。 youth“年轻”；culture“?文化”；knowledge“知识”。 68.C根据下文表述的洪水发生了，鸟和蛇的数量都减少了可知，这里指的 是他家周围发生了一些令人不安的(disturbing)事情。 69.D根据语境和空后的“it caused”可知，这里指的是洪水带来的破坏 (damage)。waste“浪费”；pressure“压力”；pain“痛苦”。 70.A空前提到鸟的数量减少了，空后提到蛇的数量也减少了，故此处用 Besides(此外)。 7l.B根据语境可知，这里指的是他意识到(realized)这是因为没有足够的 树。agree“同意”；remember“记得”；intend“打算”。 72.B根据下文中的“during the daytime”并结合常识可知，这里指的是没有 足够的树去保护这些动物免受热(heat)的伤害。 73.D根据空前的“plant trees”及语境可知，解决方法是种树，以便这些动物 在白天可以寻求到庇护(shelter)。 74.C根据上文提到的解决方法是种树以及下文中的“for help but was told that nothing would grow there'”可知，他向林业部门求助。forest'“林区， 森林”符合语境。labor'“劳动”；police?“警方”；service“服务”。 75.B根据空前的“Molai went looking on his own”以及空后的“a nearby island where he began to plant trees'”可知，此处表示他发现(discovered) 了一个附近的岛屿。 76.C根据下文中的“The water would then drip(滴下)on the plants below”及语境可知，这里指的是在旱季给小树浇水，故用Watering。 77.A根据空后的“for a lone boy”可知，对这个男孩来说，独自一个人在旱 季给小树浇水是艰难的(difficult)。illegal“非法的”；fantastic“极好的”； helpful“有益的”。 78.B根据下文中的“The water would then drip(谪下)on the plants below”可知，他是在每棵幼树的顶部(top)搭建竹台。 79.D根据空前的“where he placed earthen pots with small holes”和空后的 “rainwater'”以及“The water”可知，这里指用陶罐收集(collect)雨水。 cool down“使冷却下来”；keep off“与…保持距离”；separate“分离”。 80.D根据空后的“to plant trees for the next37 years'”以及下文可知，他在 接下来的37年中继续(continued)种树。 第二节 【语篇解读】本文是记叙文，讲述了作者在无法忍受外国饭菜之后，寻找中 国食物的历程和其中发生的趣事。 81.months考查名词的数。根据句意，三个月是复数，应使用名词的复数形 式。故填months。 82.an考查冠词。此处泛指纽约这个城市，没有特指的意思，故使用不定冠 词。又因后面的international为元音开头。故填an。 83.finding考查非谓语动词。此句的谓语为have,have difficulty(in)doing $th为固定搭配，意为：“做某事有困难”。此处使用动名词形式作宾语。 故填finding。 84.as考查介词。consider as为固定搭配，意为“认为…是…”。故填as。 85.but考查并列连词。根据句意，前文作者提到这些所谓的中国菜，下文 提到作者其实并没有见过，此处有转折对比的意思。故填but。 86.was given考查时态语态和主谓一致。饼千是别人给我们的，故应使用 被动语态，又因为此事发生在过去，故应使用被动语态的一般过去时，又 因是每一个人，应使用第三人称单数。故填was given。 参考答案41 87.thought考查时态。整篇文章在讲述一个过去发生的经历，文章的时态 基调是过去时，此处无特殊情况。故填thought。 88.laughter考查词性转换。句意：他们突然大笑起来，问道：“你真的是中国 人吗？”burst into laughter为固定搭配，意为“突然大笑”。故填laughter。 89.extremely考查词性转换。修饰动词使用副词，extreme的副词形式为 extremely.。故填extremely。 90.that考查定语从句。此句是that引导的定语从句，先行词为food,从句 谓语为excite,宾语为me,缺少主语，此处指代“food”为物。又当先行词 是形容词最高级或被形容词最高级修饰时，只能使用“that”。故填that。 第五部分文段练笔 91.causing great damage 92.how to keep safe 93.to move/stay away from 94.If possible 95.shelter which/that can cover your whole body 96.never use a lift 97.as soon as possible 98.are trapped in 99.try to keep calm 100.take right measures B卷能力提升 第二部分阅读理解 第一节 A 【语篇解读】本文主要介绍了Fair Oaks Farms推出的活动。 2l.C细节理解题。根据第一段中的“offering educator-developed programs and field trips that can be made based on your needs”可知，Fair Oaks Farms可以根据需要提供教育者开发的课程和户外教学。 22.C细节理解题。根据Pricing for students aged3 and over,parents &.teachers中的“$3 Crop Adventure only”“$7 Dairy and Pig Adventures'”可知，参加全部活动至少需要l0美元。 23.B细节理解题。根据Crop Adventure中的“get yourself involved in the digital age.Learn about the application of new technology"Dairy Adventure中的“and you can gain knowledge of the dairy in a whole new way in our3D/4 movie theater'”“Explore in virtual reality'”可知，参加这 两项活动可以接触先进技术。 B 【语篇解读】本文是记叙文。文章主要讲述了Joy Adamson和三只被领养 的狮子幼崽之一Elsa的故事，以及Joy为保护野生动物所作的贡献。 24.D推理判断题。根据第二段中“Joy Adamson immediately took over'”以 及下文描述Joy多年来一直照料其他小动物可知，Joy第一眼看到三只狮 子幼崽时就对它们爱不释手。 25.C推理判断题。根据第四段的“as Elsa grew to her adult size'”以及 “They knew she needed...to lead.”可知，随着Elsa长大，Joy和George 的家已经限制了Elsa的成长，不再适合她继续待下去。 26.A细节理解题。根据倒数第二段的“which became an international bestseller'”可知答案。 27.A主旨大意题。文章主要讲述了Joy Adamson和三只被领养的狮子幼 崽之一Elsa的故事，以及Joy为保护野生动物所作的贡献，由此可知A项 标题最贴切、全面。 C 【语篇解读】本文主要介绍荷兰年轻发明家发明的一种移除河流中塑料垃 圾的设备。 28.C细节理解题。根据第二段中的“The device is powered by energy from the sun”可知，这台设备是以太阳能为动力的。 42参考答案 29.A推理判断题。根据第三段的内容，尤其是“which means preventing more plastic from reaching the oceans in the first place'”可知，Slat认为如 果收集河里的垃圾，就能阻止垃圾进入大洋，此处close“the tap”是比喻 说法，因此tap指的是河流。 30.C细节理解题。根据最后一段中的“The device is designed…from larger floating things'”可知，这个设备在河里是安全的，因为它的头部在 碰到较大的漂浮物时会转变方向，故选C项。 31.D文章出处题。本文是一篇科技类说明文，可能出自杂志。 D 【语篇解读】本文是说明文。无消费日不是因为没钱、没时间，也不是因为 无处可消费，而是旨在唤起公众关注环境保护和减少消费的意识！ 32.B细节理解题。根据第一段中的“Did you realize that every single thing you buy affects our environment?”可知，无消费日的目的是保护环境。 33.C词句猜测题。根据第二段中的“This has led to a very unfair wealth distribution.We are all consumers,so we're all part of the problem!" 知，这儿的问题应指：财富分布不公。 34.D细节理解题。根据第三段中的“Idon't know about you,but when I think about it,I probably do buy things I won'tuse.”可知，D项正确。 35.C推理判断题。根据第二段中的“But as long as we care enough,we can change things and keep our waste to the minimum(最低限度).”可知，C 项正确。 第二节 【语篇解读】本文就如何不惹恼国家公园里的野生动物提出了一些建议。 36.E根据上一句“However,as the number of visitors..in close distance'”可 知，随着游客和野生动物数量的增加，人类和动物经常发现他们之间的距离 很近，因此知道如何尊重野生动物并保持安全是很重要的，故选E项。 37.F根据上一句“Wild animals..they do not contain themselves”以及下 一句“Never think that it is safe to get close to them”可知，F项“换句话 说，在园区内它们想去哪儿就去哪儿”符合语境。 38.C此句是本段的主旨句。根据下文中的“The park service posts these signs..take care'”可知，公园张贴这些标志是为了保护你和野生动物。 所以，如果你看到了警告标志，要小心。故C项最适合作本段的主旨句。 39.B根据下文中的“If you're out hiking.,you're at a safe distance away from that animal'”可知，如果你在户外徒步旅行时遇到了野生动物，把你 的拇指伸出来，放在与眼睛同高的位置。如果你的拇指覆盖了整个动物， 那么你就离那个动物有一段安全的距离。此处内容与使用拇指判断与动 物的距离有关，故B项“你可以遵循‘拇指规则’”符合语境。 40.A根据下文中的“Feeding wildlife is a bad idea...getting too close and getting hurt”可知，投喂野生动物不是一个好主意，你可能会被咬到。另 外，人类的食物对动物是不健康的，这让它们知道人类不构成威胁。这就 形成了一个恶性循环，导致人们靠得太近而受到伤害。下文描述了投喂 野生动物的坏处，因此此处内容与不要去投喂野生动物有关，A项“但不 要这样做”符合语境。 第三部分语言运用 第一节 【语篇解读】作者加入了一个21天的步行挑战活动，通过步行重新认识了 自己生活的环境。 4l.B根据下文中的“when I first learned to drive'”可知，作者此处是说开车 (driving)是这个地区大多数人主要的交通方式。walk“步行”；fly“飞行”； bike“骑自行车”。 42.C根据下文中的“However,.as time went by,that excitement44”可 知，作者刚学会开车是很高兴的(glad)。anxious“焦虑”；surprised“惊讶 的”；ready“准备好”。 43.D根据下文中的“I was filled with joy”可知，此处是说作者开着车，听着 音乐，音乐温和地抚慰着(comforting)作者的心。attack“袭击”；hit“打”； recover'“寻回”。 44.A根据下文中的“I feared driving,and felt worried and upset'”可知，作 者对开车的兴奋度随着时间的流逝下降了(went down)。spread out“散 开”；fall apart'“破碎”；take over'“占上风”。 45.C根据语境可知，尤其是当作者匆忙时，似乎每个人都挡了作者的路。 in a mess'“一团糟”；in a way“在某种程度上”；in a hurry“匆忙”；ina corner“在一个角落里”。 46.C根据上文中的“a deer ran out from the dark,knocked against my moving car'”和下文中的“across the street'”可知，这只鹿被撞飞后，落到了 (landed)街的对面。 47.A根据上文中的“I didn't dare to get out of my car to see her'”可知，作 者不敢下车，趴在方向盘(wheel)上哭泣。carpet'“地毯”；street'“街道”； shelter“?避难处”。 48.B根据最后一段中的“I felt deeply54 for the walking challenge'”可 知，作者加入了21天的步行挑战(challenge)活动。organization“组织”； schedule“工作计划”；competition“比赛”。 49.C根据空前的“stranger'”可知，作者会对从身边经过(passing)的每一个 陌生人微笑。 50.C根据语境可知，作者走到通常（normally)不会经过的街道上。 obviously'“明显地”；exactly“确切地”；formally“正式地”。 51.A根据下文中的“a tiny free library on the sidewalk'”可知，作者在不常 走的街上发现了(discovered)一个免费的小图书馆。build“建造”；enter “进入”；rent“租用”。 52.B根据下文中的“i迁I had really lived in this town all these years'”可知， 作者开始怀疑(question)自己这些年来是否真的在这个城镇生活过。 comment“?评论”；argue“争论”；check“检查”。 53.D根据语境和上文中的“if I had really lived in this town all these years'”可知，自作者步行以来，他发现这个城镇对于自己来说是一个新的 (new)地方。special“特别的”；similar“相似的”；quiet“安静的”。 54.A根据语境可知，作者很感激(grateful)这个21天的步行挑战活动。 hungry“渴望的”；sorry“难过”；doubtful“不太可能的”。 55.B根据语境可知，作者也许会再次踏上遥远的地区，但他知道奇迹就在 此时此地。contribution“捐赠”；wonder“奇迹”；concern“担忧”；pressure “压力”。 第二节 【语篇解读】本文是记叙文。短文叙述了作者快乐的一天，作者的快乐感染 了周围的人。 56.the考查冠词。sun是世界上独一无二的，所以要用定冠词the表示特 指。故填the。 57.woke考查时态。全篇用的都是一般过去时，所以本句也是一般过去时。 故填woke。 58.quietly考查词性转换。quietly为副词修饰动词sit。故填quietly。 59.for考查介词。thank sb for sth“因…而感谢某人”为固定短语。故填 for。 60.holding考查非谓语动词。see sb doing sth“看到某人正在做某事”，a little girl与hold在逻辑上是主动关系，所以用现在分词作宾语补足语。 故填holding。 6l.apology考查词性转换。make an apology'“道款”，为固定短语。故填 apology。 62.that考查强调句型。本句为强调句型，其结构为Itis(was)十被强调部 分（主语、宾语或状语）十who(that)。故填that。 63.my考查代词。voice为名词，需要用形容词性物主代词来修饰。故 填my。 64.better考查比较等级。even修饰形容词比较级better,表示与早上相 比，心情更好了。故填better。 65.to know考查非谓语动词。本句为“Itbe十形容词十动词不定式”的用 法。动词不定式作真正主语，It作形式主语。故填to know。Unit 5 Humans and Nature A卷基础达标 建议用时：100分钟满分：120分 出 第一部分听力（略） 第二部分基础知识运用（共五节，满分50分） 第一节单词拼写（共6小题；每小题0.5分，满分3分） 根据首字母或汉语意思将所学的单词准确地拼写出来。 21.Wearing a medical face mask has p to be a good way 密 to prevent the spread of COVID-19. 22.Had it not been for his experience in the forest,he wouldn't have s in the battle with the bear. 封 23.A survey that was c by Australian researchers shows 樊 that joyful music can help improve creativity and originality. 24.Rescuers built (避难所)for survivors whose homes had been destroyed. 线 25.(时代热点)The company developed six electric vehicle models,showing its (雄心)to break into the new 分 energy vehicle market. 内 26.It is considered polite to express our concern about other people's losses and (痛苦). 第二节完成句子（共6小题；每小题1分，满分6分） 不 用方框中英语短语的适当形式完成句子，其中有两项为多余选项。 on the edge of pick up run out turn one's back on prepare for carry on break down be covered with 蚁 准 27.Wherever we live,it's necessary for us to learn to the unexpected. 28.In the competition,all the competitors have to use up all the 答 items before the time according to the rules. 29.Make sure that you save all your work on the desktop in case your computer 30.He is a warm-hearted man and never those who are 茶 题 in trouble. 31.Wildlife conservation areas provide a shelter for hundreds of wild animal species extinction. 32.After floating on the ocean for three days,this boy by a lifeboat at last. 第三节单句语法填空（共8小题；每小题1.5分，满分12分） 在空白处填人1个适当的单词或括号内单词的正确形式。 丝 33.We were impressed by the (brave)of the soldiers 北 who fight floods in the flooded areas. 34.Once the damage the environment is done,it will take many years for the ecosystem to recover. 35.The audience is waiting (anxious)to see which team will win. 36.His lecture was so exciting that it (interrupt) continually by cheers. 37. (measure)against that of our competitors,our offer is very practical. 38.People rushed into flooded streets (rescue)strangers trapped in the floodwater,placing their own lives at risk. 39.Max is hard-working, (cheer)and honest,which makes him liked by a lot of people. 40.He hopes that the overseas students will spread the goodwill and (sincere)of the Chinese people to other parts of the world. 第四节翻译句子（共6小题；每小题1.5分，满分9分） 根据汉语意思及括号内的提示完成句子。 41.(时代热点)将垃圾分类是我们的职责，因为这关乎我们的未来。 (it作形式主语；duty) sort the garbage,because it relates to our future. 42.这家百货公司试图通过提供线上得不到的服务吸引顾客去商 场。(attempt) The department store customers to malls by offering services that aren't available online. 43.他能实现他的理想的原因是他既勤奋又聪明。(the reason why;ambition) he was hard-working and smart. 44.在博物馆中探索中国历史是多么令人愉快的经历呀！(how十 adj.+a/an十n.十主语十谓语) to explore the Chinese history in the museum! 45.你越努力学习，你对未来的准备就越充分。(the+比较级..， the十比较级..) you study, you are for the future. 46.我们已经进入了这样一个时代，在这个时代高科技影响着各行 各业的人。（定语从句） We have entered into an age people from all walks of life. 第五节课文语法填空（共10小题；每小题2分，满分20分） 阅读下面短文，在空白处填人1个适当的单词或括号内单词的 正确形式。 One day,when my two brothers and I were coming back from the islands 47. we often went fishing,the sky was 48. (sudden)covered with dark clouds and soon we were in a terrible storm.A huge wave covered our boat and my younger brother 49. (fall)into the sea.With the wind and waves, my elder brother and I were going in 50. direction of the whirlpool.We were hopeless. The boat went over the edge and went round in circles at great speed on the inside of the huge whirlpool.After a while,I became curious 51. the whirlpool itself and then I made three important 52. (observe).I found that round objects fell down more rapidly and tube-shaped objects fell down more slowly. So I tied myself to a barrel to help me float.I tried to make my elder brother understand,but he was too 53. (frighten) and stayed in the heavy boat.Without waiting,I jumped into the sea 54. (escape).Some time after I left the boat,it 55. (pull)into the bottom of the whirlpool. In the end,my old friends picked me up.I told them my story, 56. they didn't believe it.Now I have told you and cannot expect you to believe me any more than they did. 第三部分阅读理解（共两节，满分20分） 第一节（共4小题；每小题2.5分，满分10分） 阅读短文，从每题所给的四个选项(A、B、C和D)中，选出最佳 选项。 In one of the world's most forbidding environments,polar bears spend their summers roaming (the Arctic on large pieces of floating ice.They drift (for hundreds of miles, finding mates,hunting for seals,and fatting themselves up for the winter.Without the floating ice,the world's largest bears could not survive.Yet at this moment,the polar bears'Arctic habitat is melting away because of global warming. Over the past three decades,more than a million square miles of floating ice has disappeared.Scientists predict that,if the current rate of global warming continues,most,if not all,of the bears' floating ice will be gone by 2100.As a result,the world's polar bears could face global dying out by the end of this century. Already,the ice on the southern edge of the polar bears' habitat is melting about three weeks earlier than in the past.The loss of those key weeks leaves the bears less time to hunt,eat and store up fat.Once the ice melts,the bears must fast for up to eight months on land until the floating ice returns.As a result of early melting,there has been a 14 percent decline in the Hudson Bay polar bear population over the past ten years-a fall clearly caused by global warming. Besides,a growing number of polar bears may be drowning (as they are forced to swim more often,and for longer distances,looking for ice sheets().According to a report by the US Minerals Management Service,researchers observed four dead polar bears floating 60 miles off Alaska in September of 2006 and said it was likely that many other bears swimming far off shore also drowned.Scientists have concluded that the worldwide population of about 20,000 polar bears is likely to become smaller by more than 30 percent in the next 35 to 50 years alone. 57.What do polar bears usually do in summer? A.Look for relatives. B.Hunt for food. C.Store crops up. D.Make friends with seals. 第一部分单元检测卷7 58.What disaster will happen to polar bears by the end of this century according to the text? A.Global drowning B.Global dying out. C.Global hunger. D.Global roaming. 59.What can be inferred from the underlined part in paragraph 3? A.The bears will have to stay hungry longer. B.The bears will have to roam faster. C.The bears will have to stay quieter on land. D.The bears will have to face a faster fall of its population. 60.Why do polar bears have to swim more often and farther? A.To search for food.B.To build up bodies to survive. C.To find places to land on.D.To escape being hunted. 第二节（共5小题；每小题2分，满分10分） 根据短文内容，从短文后的选项中选出能填入空白处的最佳选 项。选项中有两项为多余选项。 In 2004,a tsunami around the Indian Ocean killed at least 220,000people.The huge death was in part caused by the fact that many communities received no warning.61. Yet in the minutes and hours before the walls of water up to 9 meters high went through coastlines,some animals seemed to sense the coming danger and made efforts to escape.Elephants ran for higher ground,and chickens left low-lying nesting areas. 62. These descriptions of animal behavior before disasters have inspired some researchers to pay serious scientific attention to the theory (that animals may have inbuilt systems which can predict the upcoming natural disasters. The researchers found that the farm animals began to change their behavior up to 20 hours before an earthquake.63. Just two weeks before the earthquake,a series of strong perturbations()happened in local atmospheric electric charges every two to four minutes. China has already created an earthquake alert system in Nanning,monitoring the behavior of animals-especially snakes. “64. ,”Jiang Weisong,the director,said.“When an earthquake is about to hit,snakes will move out of their nests,even in winter..” 65. And even if they do help,animal movements alone are unlikely to be enough.People will need to rely on a mix of early warning signals to get the picture. A.Even dogs refused to go outdoors B.Snakes are perhaps the most sensitive to earthquakes C.Local man-made early warning systems failed to raise any clear alarm D.Some animals will make a noise to tell human beings about the accident E.And scientists also found what might lead to the changes in local animal behavior F.Finally we should make full use of the animal early warning systems in scientific research G.Not all experts think animal early warning systems are a dependable option of predicting disasters 8第一部分单元检测卷 第四部分语言运用（共两节，满分30分） 第一节（共15小题；每小题1分，满分15分） 阅读下面短文，从短文后各题所给的四个选项(A、B、C和D) 中，选出可以填入空白处的最佳选项。 Molai grew up in a tiny village in India.The village lay near some wetlands which became his second 66.He learned the value and beauty of 67 there from a very young age. When he was 16,Molai began to notice something 68 happening around his home.A flood had hit the area earlier that year and the 69 it caused had driven away a number of birds. 70 the number of snakes had dropped as well.He 71 that it was because there weren't enough trees to protect them from the 72.The solution,of course,was to plant trees so the animals could seek 73 during the daytime.He turned to the 74 department for help but was told that nothing would grow there. However,Molai went looking on his own and 75 a nearby island where he began to plant trees. 76 young plants in the dry season was 77 for a lone boy.Molai built at the 78 of each sapling()a bamboo platform,where he placed earthen pots with small holes to 79 rainwater.The water would then drip()on the plants below. Molai 80 to plant trees for the next 37 years.His efforts have resulted in 1,360 acres of naturally-grown land that has become home to many plants and animals. 66.A.dream B.job C.home D.choice 67.A.nature B.youth C.culture D.knowledge 68.A.exciting B.interesting C.disturbing D.confusing 69.A.waste B.pressure C.pain D.damage 70.A.Besides B.However C.Therefore D.Otherwise 71.A.agreed B.realized C.remembered D.intended 72.A.noise B.heat C.disease D.dust 73.A.directions B.partners C.help D.shelter 74.A.labor B.police C.forest D.service 75.A.rebuilt B.discovered C.left D.managed 76.A.Decorating B.Observing C.Watering D.Guarding 77.A.difficult B.illegal C.fantastic D.helpful 78.A.back B.top C.foot D.side 79.A.cool down B.keep off C.separate D.collect 80.A.returned B.learned C.failed D.continued 第二节（共10小题；每小题1.5分，满分15分） 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。 After eating a diet of bread,hamburgers and spaghetti for three 81. (month),I began to miss Chinese food. Luckily,in 82. international city like New York,I have little difficulty 83. (find)a Chinese restaurant.However, the Chinese food,which the locals consider 84. their favorite,is not exactly the Chinese food I enjoy in Beijing.I can always find such so-called "Chinese food"as honey chicken on the menu,85. I actually have never even heard of it before. One day,I went to a Chinese restaurant with my local friends.After the meal,each of us 86.(give)a dumpling -shaped cookie.Once I bit into it,I realized something not quite right.I found a piece of paper with a message that read,"This fortune's no good,try another."At first I 87. (think)it must be a trick of the restaurant.When I told this to my friends, they burst into 88. (laugh)and asked,"Are you really from China?” But it doesn't mean there is no place in New York where I can satisfy my stomach.I always head to China Town when I 89. (extreme)miss the food of my homeland.Following the hot and spicy smell,.I can always find the most typical(典型的)Chinese food 90. excites me in the city. 第五部分文段练笔（共10小题；每小题2分，满分20分） 根据表格内的写作要求及括号内的汉语提示，将文章补充 完整。 假定你是李华，你的外国朋友To来信询问你关于地震的相 关信息，请你写一封回信，告知他如何在地震中保证安全。 Dear Tom, An earthquake may hit our area sometime,91. (造成巨大的损失).Do you know92. (如何保证安全)inan earthquake?Here are some guidelines. During an earthquake,if you are outdoors,my advice is 93. (远离)buildings,trees, streetlights and anything else that might fall.If you are in a building,cover your head and neck with hands,arms or hard objects.94. (如果可能的话)， find a strong 95. (能覆盖住 你整个身体的避难处).Besides,96. (绝对不要使用电梯).If you are driving a car,stop it 97. (尽可能快地)，but avoid stopping near a building or under a tree.If you 98. (被困在)the ruins,don't be nervous and99. (尽力保持冷静)and wait for the rescue team to help. Actually we can reduce the damage that earthquakes bring us if we 100. (采取正确的措施). Do you think I am right?Looking forward to your reply. Yours, Li Hua