Unit 5 Saving animals in danger 单元语法（It作形式主语和adj+enough+to+v）-2025-2026学年八年级英语下学期单元重难点易错题精练（新教材沪教版）

Unit 5 Saving animals in danger It作形式主语和adj+enough+to+v （时间：40分钟，满分：100分） It is + adj. + for + n./pron. + to + v. 1. It is important for us to protect them. 2. It is good for people to save endangered animals. （1）在句型“Itis+adj.+for+n./pron.+to+v.”中，it是形式主语，动词不定式是真正的主语。 （2）此句型中的形容词表示句中动作的特征，如可能性、必要性、重要性、紧迫性、频繁程度以及价值判断等。常用于这一句型的形容词有：common, easy, right, good, (un)important, (un)necessary,（im)possible,(un)usual等。 It is + adj. + of + n. / pron.+to+v. 1. It is cruel of them to kill pandas. 2. It is kind of the boy to try to save the dog. （1）在句型“It is+adj.+of+ n./ pron.+to+v.”中，it是形式主语，动词不定式是真正的主语。 （2）此句型中的形容词表示句中的人或事物的特征。常用于此句型的形容词有：careless,clever,good,kind,nice,polite,silly等。 adj. +enough+to+v. 1. They are strong enough to protect themselves. 2. The baby panda is not old enough to eat bamboo. ＝ The baby panda is too young to eat bamboo. （1）在“adj.+enough+to+v.”结构中，enough为副词，修饰形容词时放在其后，表示主语所指的对象有足够的能力去做某件事，该句型意为“足够······来······;太······以至于 . . . . . （2）此结构的否形式为“not+adj.+enough+to+v.”，意为“不够．．．．来··. . . ·”；可与“too+adj. +to+v. ”表达相似的句意。 一、单项选择(本大题共20小题，每小题2分，共40分) 1．It’s important ________ to our parents when we have problems. A．to talk B．talking C．talk D．talked 【答案】A 【详解】句意：当我们遇到问题时，和父母交谈是很重要的。 考查动词不定式。to talk动词不定式；talking动名词；talk动词原形；talked过去式。根据“It’s important ... to our parents”可知，固定句型“It’s + adj. + to do sth.”，表示“做某事是……的”。该句型中形容词important后应接动词不定式作真正主语。故选A。 2．________ is necessary for us to wash our hands when we are back home. A．It B．That C．This D．There 【答案】A 【详解】句意：我们回家后洗手是必要的。 考查it作形式主语的用法。It它；That那个；This这个；There那里。分析句子结构可知，真正的主语是后面的不定式短语“to wash our hands when we are back home”，此处需用it作形式主语，构成“It is + 形容词 + for sb. to do sth.”句型。故选A。 3．________ is impolite for us to shout at others loudly. A．This B．That C．There D．It 【答案】D 【详解】句意：对我们来说大声对别人喊叫是不礼貌的。 考查it作形式主语的用法。This这个；That那个；There那里；It它。据“…is impolite for us to shout at others loudly.”可知，此处是“It is+adj+for sb to do sth”句型，意为“对某人来说做某事是……的”，其中it是形式主语，真正的主语是动词不定式。故选D。 4．—It’s so kind ________ you to help look after my cat. —That’s OK. It’s necessary ________ us to help each other. A．of; of B．for; of C．of; for 【答案】C 【详解】句意：——你真是太好了，帮我照顾我的猫。——没关系。我们互相帮助是必要的。   考查介词辨析。第一空：在“It’s + 形容词 + of sb. to do sth.”结构中，形容词描述人的品质（如kind, nice, clever等）时用of；第二空：在“It’s + 形容词 + for sb. to do sth.”结构中，形容词描述事物特征（如necessary, important, easy等）时用for。根据句意，“kind”描述人的品质，“necessary”描述行为特征，故选C。 5．It’s dangerous for children ________ the dog. A．play B．to play C．to play with 【答案】C 【详解】句意：对于孩子来说，和狗一起玩是危险的。 考查动词不定式的用法。It’s+形容词+for sb. to do sth.“做某事对于某人来说是……的”，it作形式主语，动词不定式是真正的主语；play with“和……一起玩”，动词短语。故选C。 6．It’s seven o’clock. It’s time ________ to school. A．go B．going C．to go 【答案】C 【详解】句意：现在是七点钟。该去上学了。 考查固定句型。It’s time to do sth.“是做某事的时候了”，此处应使用不定式结构to go。故选C。 7．My father loves sports. It takes him one hour ________ sports every day. A．doing B．do C．to do 【答案】C 【详解】句意：我的父亲喜欢运动。他每天花一个小时做运动。 考查动词不定式作主语。doing做，动名词或动词现在分词；do做，动词原形；to do去做，动词不定式。根据“My father loves sports. It takes him one hour...sports every day.”可知，句中“it takes sb. some time to do sth.”是固定句型，意为“花费某人多长时间做某事”，其中“it”是形式主语，真正的主语是后面的动词不定式“to do sth.”。所以此处应该使用动词不定式“to do”。故选C。 8．It’s really nice ________ you to help her answer them. A．for B．of C．to 【答案】B 【详解】句意：你帮助她回答这些问题真是太好了。 考查介词辨析。for为了；of属于……的；to向。固定句型：“It’s + adj. + of/for sb. + to do sth.”，当形容词描述人的品质（如nice/kind/clever等）时，用of；当形容词描述事物性质（如important/necessary等）时，用for。本题中nice修饰人的品质，故选B。 9．It’s important ________ us ________ hard in order to have a better life. A．of; work B．for; to work C．with; working 【答案】B 【详解】句意：为了过上更好的生活，对我们来说努力工作是很重要的。 考查介词及非谓语动词。of……的；for为了；with和。It is+形容词+for/of sb. to do sth.“对于某人来说，做某事是……的”；由important是描述事物特点的形容词可知，介词要用for。故选B。 10．— It’s so kind ________ you to help me with the problem. — That’s OK. It’s necessary ________ us to help each other. A．of; for B．of; of C．for; of 【答案】A 【详解】句意：——你帮我解决难题真是太好了。——没关系。我们有必要互相帮助。 考查it固定句型。It’s + adj. +of (for) sb to do sth表示“对某人来说做某事是……”。当形容词是描述人的性格或品质的，用of；若形容词仅是描述事物的性质，应用for。第一句kind描述人的品质，应用of；第二句necessary修饰事物，应用for。故选A。 11．—I want to set up a Nanyin club in our school. —That’s a good idea! It is quite necessary for us ________ this traditional art. A．spread B．spreading C．to spread 【答案】C 【详解】句意：——我想在学校成立一个南音社。——好主意。传播这种传统艺术对我们来说很有必要。 考查非谓语动词。spread传播，动词原形；spreading动名词；to spread不定式。It is+形容词+for sb.to do sth.“做某事对某人来说是怎么样的”，所以设空处填写不定式作真正主语。故选C。 12．It’s very nice _______ pictures for me. A．of you to draw B．for you to draw C．for you drawing 【答案】A 【详解】句意：你真是太好了，能来为我画画。 考查it的固定句型。it’s adj. for sb. to do sth.“做某事对某人而言是……的”，for sb.的句型常用于表示事物的特征或特点；it’s adj. of sb. to do sth.“某人做某事怎么样”，of sb.的句型一般表示人物的性格或品德。此处的“nice”形容的是人的品质，应用of sb.句型，of you to draw符合语境。故选A。 13．I find this book ________ for a six-year-old child to read. A．enough easy B．easy enough C．easily enough 【答案】B 【详解】句意：我发现这本书对一个六岁的孩子来说很容易读。 考查形容词和enough的用法。easy容易的，形容词；easily容易地，副词。此处是结构find sth. adj.“发现某物是……的”，形容词作宾语补足语，enough修饰形容词时需后置。故选B。 14．Jane is always ________ to share her things with us. That’s why she is popular. A．too generous B．enough generous C．generous enough 【答案】C 【详解】句意：简总是很慷慨地和我们分享她的东西。那就是她很受欢迎的原因。 考查enough的用法。too generous to太慷慨而不能……；enough generous没有此用法；generous enough足够慷慨。enough应该放在形容词之后，意为“足够怎样”。根据“That’s why she is popular.”可知简很慷慨，故选C。 15．Jack is 13 years old. He is _________ to help his mother do some housework. A．enough old B．old enough C．young enough 【答案】B 【详解】句意：杰克13岁了。他足够大可以帮他妈妈做家务了。 考查enough的用法及形容词辨析。old老的；young年轻的；enough足够的。此处enough修饰形容词，应置于形容词后，排除A选项；根据“to help his mother do some housework.”可知，此处是指他足够大了可以帮助做家务。故选B。 16．—Are you__________to go on a trip to Guilin?   —Yes. But I don’t have ____________ . A．free enough; enough money B．enough free; enough money C．free enough; moneys enough 【答案】A 【详解】句意：——你有时间去桂林旅游吗？——是的。但是我没有足够的钱。 考查enough的用法。enough“足够的”，可做形容词和副词，enough用作形容词修饰名词时放在名词之前，用作副词修饰形容词时应放在形容词之后，本句中free是形容词，money是名词，故选A。 17．—Mom, I think I’m ________ to take care of myself. —OK, I’m glad to hear that. A．big enough B．old enough C．enough old 【答案】B 【详解】句意：——妈妈，我想我已经长大了，可以照顾自己了。 ——好的，听到这个我很高兴。 考查enough后置。enough足够地，修饰形容词或者副词时，要放在形容词或者副词的后面，且是年龄足够大了才能照顾自己。故选B。 18．The boy isn’t _________ to go to school. A．enough old B．old enough C．enough big 【答案】B 【详解】句意：这个男孩还不够大，不能上学。 考查形容词辨析和enough后置。old年龄大的；big大，通常指体积。根据“The boy isn’t…to go to school.”可知是不够上学的年纪，应用形容词old，enough修饰形容词，应放在其后。故选B。 19．—How old is your younger sister? —She is seven now. She will be ________ to go to school this September. A．enough old B．old enough C．young enough 【答案】B 【详解】句意：——你的小妹妹多大了？——她现在七岁了。今年九月份她就足够大可以去学校。 考查enough后置用法和形容词辨析。enough old错误表达；old enough足够大（年龄）； young enough足够年轻。根据“to go to school this September”可知，可以去上学，应该是年龄足够大，故选B。 20．The book is ________ for us to read. A．good enough B．enough good C．too good 【答案】A 【详解】句意：这本书足够好，我们可以阅读。 考查enough的用法。enough足够 ；too太。根据“for us to read”可知是足够好，可以阅读，用enough，修饰形容词时，enough后置。故选A。 二、完成句子(本大题共10小题，每小题2分，共20分) 21．保持校园干净整洁是我们的责任。 It’s keep our schoolyard clean and tidy. 【答案】our duty to 【详解】根据中文对照可知，空缺部分是“我们的责任”，此处考查固定句型：It’s one’s duty to do sth.“做某事是……的责任”，our“我们的”，形容词性物主代词，修饰名词duty，结合空格前后，此处填入our duty to即可。故填our duty to。 22．对我们来说，保持好心情是必要的。 for us to be in a good mood. 【答案】 It’s necessary 【详解】对比所给中英文可知，此处为固定句式“It’s+adj.+for sb. to do sth.”，意为“对某人来说，做某事是……的”，necessary“必要的”。故填It’s；necessary。 23．在运动时穿运动鞋是很有必要的。 It’s wear sports shoes when doing sports. 【答案】 necessary to 【详解】根据中英文对照可知，此处是固定句式It’s+adj+for sb to do sth“对某人来说做某事是……的”，necessary“有必要的”。故填necessary；to。 24．Becoming a famous runner is not easy. (改为同义句) not easy to become a famous runner. 【答案】 It is 【详解】句意：成为一名著名的赛跑者并不容易。此处可以使用“It is+adj+to do sth.”句型改写同义句，it是形式主语，真正的主语是动词不定式，故填It；is。 25．学习好的礼仪对孩子来说是很重要的。 good manners. 【答案】It’s very important for children to learn 【详解】it is adj. for sb. to do sth.“做某事对某人而言是……的”，it作形式主语，不定式为真正的主语；very important“很重要的”，作表语；for children“对孩子来说”；learn“学习”，动词。故填It’s very important for children to learn。 26．My home is about twenty minutes by bike. (改为同义句) It me twenty minutes there from my home by bike. 【答案】 takes to get 【详解】句意：骑自行车到我家大约二十分钟。原句表示“骑自行车到我家大约二十分钟”可用“从那里到我家骑自行车要花二十分钟时间”表达相同的意思；It take sb+时间段+to do sth“做某事花费某人……时间”；get to到达，此处使用get的不定式，there是副词，省略get后的to。故填takes；to get。 27．Nancy is too weak to carry the heavy box. (改为同义句) Nancy carry the heavy box. 【答案】 isn’t strong enough to 【详解】句意：南希太虚弱了，搬不动那个沉重的盒子。改为同义句，可以表示为“不够强壮去”，主语是Nancy，用结构isn’t strong enough to。故填isn’t；strong；enough；to。 28．The maths problem was so difficult that I couldn’t work it out. (改为简单句) The maths problem wasn’t for me to work out. 【答案】 easy enough 【详解】句意：这道数学题太难了，我做不出来。改为简单句，表达可以为“这道数学题不够容易，我算不出来。”，easy“容易的”；enough“足够”放在形容词后面。故填easy；enough。 29．她真高，能够得着书架的顶部。 She is the top of the bookshelf. 【答案】 tall enough to reach 【详解】tall enough to do sth“足够高做某事”，reach“够得到”，故填tall；enough；to；reach。 30．你帮我修车真是太好了。 You are help me mend my car. 【答案】 kind enough to 【详解】根据中英文对照可知，空缺部分是“太好了”，结合“You are…help me mend my car.”，此处应该填入kind “好的”，形容词，作表语；enough“很，非常”，副词，作状语，修饰形容词kind；to，与后面help构成不定式，作结果状语。故填kind；enough；to。 三、短文填空(本大题共20小题，每小题2分，共40分) 在空白处填入一个适当的词，或填入括号中所给单词的正确形式。 Elephants are amazing animals. They are some of 31 biggest animals on land. An African elephant is 32 (strong) than an Asian elephant. It has very large 33 (ear). They look like two big fans. Elephants are very smart. They have excellent memories and can remember places with food and water for a long time. They also have long trunks (象鼻). The trunk is used to eat, drink, and even take 34 bath. Elephants are friendly animals. They 35 (live) in small groups many years ago and 36 (careful) looked after their babies. However, elephants are in danger. They are losing their homes 37 people are cutting down too many trees. Also, some people hunt them for their ivory. We must do something 38 (protect) these kind animals. We should not buy 39 (something) made of ivory (象牙). We can also tell more people about the importance of elephant protection. If we work together, elephants 40 (enjoy) a better life in the future. 【答案】 31．the 32．stronger 33．ears 34．a 35．lived 36．carefully 37．because 38．to protect 39．anything 40．will enjoy 【导语】本文是一篇说明文，介绍了大象的体型特征、智慧习性及其友好的群居生活，同时指出它们因栖息地破坏和非法捕猎而面临生存威胁，最后呼吁人们采取行动保护大象，共创美好未来。 31．句意：它们是陆地上最大的动物之一。空后是biggest，最高级前应用定冠词the。故填the。 32．句意：非洲象比亚洲象强壮。根据“than”可知，此处应用形容词strong的比较级stronger。故填stronger。 33．句意：它有非常大的耳朵。ear“耳朵”，可数名词；此处应用复数名词ears，表示泛指。故填ears。 34．句意：象鼻用来吃东西，喝水，甚至洗澡。take a bath“洗澡”，动词短语。故填a。 35．句意：多年前，他们以小团体的形式生活，并仔细照顾他们的孩子。根据“many years ago”可知，句子时态为一般过去时，谓语动词用过去式。故填lived。 36．句意：多年前，他们以小团体的形式生活，并仔细照顾他们的孩子。此处应用副词carefully“仔细地”修饰looked after，表示“仔细照顾他们的孩子”。故填carefully。 37．句意：他们正在失去家园，因为人们砍伐了太多的树木。分析句子结构可知，前后句之间是因果关系，前果后因，此处应用because“因为”引导原因状语从句。故填because。 38．句意：我们必须采取措施保护这些善良的动物。根据“We must do something…these kind animals.”以及提示词可知，此处指“采取措施去保护这些动物”，应用动词不定式作目的状语，应用to protect。故填to protect。 39．句意：我们不应该买象牙做的东西。根据“We should not buy…made of ivory.”以及提示词可知，此处指“不应该买象牙做的东西”，句子为否定句，空处应用anything“任何东西”。故填anything。 40．句意：如果我们一起努力，大象将在未来享受更好的生活。根据“If we work together, elephants…a better life in the future.”可知，if引导的条件状语从句，遵循“主将从现”，主句用一般将来时，其结构为“will do”。故填will enjoy。 阅读下面的文章，在空白处填入适当的内容 (限1个单词) 或括号内单词的正确形式，使文章通顺完整。 My name is Pingo. I am a two-year-old emperor penguin (帝企鹅). I live 41 Antarctica (南极洲) with all the other emperor penguins. There are no emperor penguins anywhere else in the world. Together with many other penguins, we make up a group. We spend 42 (we) whole lives here and the temperature can drop to -75℉. We have special 43 (way) of keeping warm. Emperor penguins are 44 (large) penguins in the world. In our group, 45 an emperor penguin is 9 months old, he is fully grown (成年的). The tallest in my group is Pablo—4 feet tall. Emperor penguins are heavy too. Pablo is more than 100 pounds. I’m not as tall as Pablo. A funny thing about us is that we are birds with wings, 46 we can’t fly. We use our wings 47 (help) us swim faster under water. Most emperor penguins live for 15 to 20 years. Polly, a member of our group, will be 38 this year. She’s 48 (real) old as a penguin. I am getting a little worried about 49 future of emperor penguins. The weather is changing in the Antarctic sea. Scientists say we would all die by the year 2100 if it keeps getting warmer and warmer. That’s too bad. Penguins play an important role in our world, so we must 50 (protect) them. Let’s take action! 【答案】 41．in 42．our 43．ways 44．the largest 45．when 46．but 47．to help 48．really 49．the 50．protect 【导语】本文以帝企鹅平戈的口吻，介绍了帝企鹅的栖息地、保暖方式、体型特点、习性及生存现状，呼吁保护它们。 41．句意：我和其他所有帝企鹅一起生活在南极洲。live in是固定搭配，后接大地点，南极洲属于大地点。故填in。 42．句意：我们在这里度过我们的一生，气温会降到华氏零下75度。空格后是名词短语whole lives，需要用形容词性物主代词修饰，we的形容词性物主代词是our。故填our。 43．句意：我们有特殊的保暖方法。way是可数名词，前面没有不定冠词修饰，此处需要用复数形式ways表示泛指。故填ways。 44．句意：帝企鹅是世界上最大的企鹅。根据“in the world”可知，此处是在限定范围内进行比较，要用形容词的最高级形式，large的最高级是largest，形容词最高级前要加定冠词the。故填the largest。 45．句意：在我们族群里，当一只帝企鹅9个月大的时候，它就完全成年了。根据“an emperor penguin is 9 months old, he is fully grown (成年的)”可知，此处需要一个连词引导时间状语从句，when意为“当……时”，符合语境。故填when。 46．句意：关于我们一件有趣的事是，我们是有翅膀的鸟，但我们不会飞。根据“A funny thing about us is that we are birds with wings...we can’t fly.”可知，前半句和后半句是转折关系，but意为“但是”，表转折。故填but。 47．句意：我们用我们的翅膀来帮助我们在水下游得更快。use sth. to do sth.是固定搭配，意为“用某物做某事”，所以此处用动词不定式to help。故填to help。 48．句意：作为一只企鹅，她真的很老了。空格后是形容词old，需要用副词来修饰，real的副词形式是really。故填really。 49．句意：我有点担心帝企鹅的未来。此处特指帝企鹅的未来，需要用定冠词the。故填the。 50．句意：企鹅在我们的世界里扮演着重要的角色，所以我们必须保护它们。must是情态动词，情态动词后接动词原形。故填protect。 试卷第1页，共3页 试卷第1页，共3页 学科网（北京）股份有限公司 $ Unit 5 Saving animals in danger It作形式主语和adj+enough+to+v （时间：40分钟，满分：100分） It is + adj. + for + n./pron. + to + v. 1. It is important for us to protect them. 2. It is good for people to save endangered animals. （1）在句型“Itis+adj.+for+n./pron.+to+v.”中，it是形式主语，动词不定式是真正的主语。 （2）此句型中的形容词表示句中动作的特征，如可能性、必要性、重要性、紧迫性、频繁程度以及价值判断等。常用于这一句型的形容词有：common, easy, right, good, (un)important, (un)necessary,（im)possible,(un)usual等。 It is + adj. + of + n. / pron.+to+v. 1. It is cruel of them to kill pandas. 2. It is kind of the boy to try to save the dog. （1）在句型“It is+adj.+of+ n./ pron.+to+v.”中，it是形式主语，动词不定式是真正的主语。 （2）此句型中的形容词表示句中的人或事物的特征。常用于此句型的形容词有：careless,clever,good,kind,nice,polite,silly等。 adj. +enough+to+v. 1. They are strong enough to protect themselves. 2. The baby panda is not old enough to eat bamboo. ＝ The baby panda is too young to eat bamboo. （1）在“adj.+enough+to+v.”结构中，enough为副词，修饰形容词时放在其后，表示主语所指的对象有足够的能力去做某件事，该句型意为“足够······来······;太······以至于 . . . . . （2）此结构的否形式为“not+adj.+enough+to+v.”，意为“不够．．．．来··. . . ·”；可与“too+adj. +to+v. ”表达相似的句意。 一、单项选择(本大题共20小题，每小题2分，共40分) 1．It’s important ________ to our parents when we have problems. A．to talk B．talking C．talk D．talked 2．________ is necessary for us to wash our hands when we are back home. A．It B．That C．This D．There 3．________ is impolite for us to shout at others loudly. A．This B．That C．There D．It 4．—It’s so kind ________ you to help look after my cat. —That’s OK. It’s necessary ________ us to help each other. A．of; of B．for; of C．of; for 5．It’s dangerous for children ________ the dog. A．play B．to play C．to play with 6．It’s seven o’clock. It’s time ________ to school. A．go B．going C．to go 7．My father loves sports. It takes him one hour ________ sports every day. A．doing B．do C．to do 8．It’s really nice ________ you to help her answer them. A．for B．of C．to 9．It’s important ________ us ________ hard in order to have a better life. A．of; work B．for; to work C．with; working 10．— It’s so kind ________ you to help me with the problem. — That’s OK. It’s necessary ________ us to help each other. A．of; for B．of; of C．for; of 11．—I want to set up a Nanyin club in our school. —That’s a good idea! It is quite necessary for us ________ this traditional art. A．spread B．spreading C．to spread 12．It’s very nice _______ pictures for me. A．of you to draw B．for you to draw C．for you drawing 13．I find this book ________ for a six-year-old child to read. A．enough easy B．easy enough C．easily enough 14．Jane is always ________ to share her things with us. That’s why she is popular. A．too generous B．enough generous C．generous enough 15．Jack is 13 years old. He is _________ to help his mother do some housework. A．enough old B．old enough C．young enough 16．—Are you__________to go on a trip to Guilin?   —Yes. But I don’t have ____________ . A．free enough; enough money B．enough free; enough money C．free enough; moneys enough 17．—Mom, I think I’m ________ to take care of myself. —OK, I’m glad to hear that. A．big enough B．old enough C．enough old 18．The boy isn’t _________ to go to school. A．enough old B．old enough C．enough big 19．—How old is your younger sister? —She is seven now. She will be ________ to go to school this September. A．enough old B．old enough C．young enough 20．The book is ________ for us to read. A．good enough B．enough good C．too good 二、完成句子(本大题共10小题，每小题2分，共20分) 21．保持校园干净整洁是我们的责任。 It’s keep our schoolyard clean and tidy. 22．对我们来说，保持好心情是必要的。 for us to be in a good mood. 23．在运动时穿运动鞋是很有必要的。 It’s wear sports shoes when doing sports. 24．Becoming a famous runner is not easy. (改为同义句) not easy to become a famous runner. 25．学习好的礼仪对孩子来说是很重要的。 good manners. 26．My home is about twenty minutes by bike. (改为同义句) It me twenty minutes there from my home by bike. 27．Nancy is too weak to carry the heavy box. (改为同义句) Nancy carry the heavy box. 28．The maths problem was so difficult that I couldn’t work it out. (改为简单句) The maths problem wasn’t for me to work out. 29．她真高，能够得着书架的顶部。 She is the top of the bookshelf. 30．你帮我修车真是太好了。 You are help me mend my car. 三、短文填空(本大题共20小题，每小题2分，共40分) 在空白处填入一个适当的词，或填入括号中所给单词的正确形式。 Elephants are amazing animals. They are some of 31 biggest animals on land. An African elephant is 32 (strong) than an Asian elephant. It has very large 33 (ear). They look like two big fans. Elephants are very smart. They have excellent memories and can remember places with food and water for a long time. They also have long trunks (象鼻). The trunk is used to eat, drink, and even take 34 bath. Elephants are friendly animals. They 35 (live) in small groups many years ago and 36 (careful) looked after their babies. However, elephants are in danger. They are losing their homes 37 people are cutting down too many trees. Also, some people hunt them for their ivory. We must do something 38 (protect) these kind animals. We should not buy 39 (something) made of ivory (象牙). We can also tell more people about the importance of elephant protection. If we work together, elephants 40 (enjoy) a better life in the future. 阅读下面的文章，在空白处填入适当的内容 (限1个单词) 或括号内单词的正确形式，使文章通顺完整。 My name is Pingo. I am a two-year-old emperor penguin (帝企鹅). I live 41 Antarctica (南极洲) with all the other emperor penguins. There are no emperor penguins anywhere else in the world. Together with many other penguins, we make up a group. We spend 42 (we) whole lives here and the temperature can drop to -75℉. We have special 43 (way) of keeping warm. Emperor penguins are 44 (large) penguins in the world. In our group, 45 an emperor penguin is 9 months old, he is fully grown (成年的). The tallest in my group is Pablo—4 feet tall. Emperor penguins are heavy too. Pablo is more than 100 pounds. I’m not as tall as Pablo. A funny thing about us is that we are birds with wings, 46 we can’t fly. We use our wings 47 (help) us swim faster under water. Most emperor penguins live for 15 to 20 years. Polly, a member of our group, will be 38 this year. She’s 48 (real) old as a penguin. I am getting a little worried about 49 future of emperor penguins. The weather is changing in the Antarctic sea. Scientists say we would all die by the year 2100 if it keeps getting warmer and warmer. That’s too bad. Penguins play an important role in our world, so we must 50 (protect) them. Let’s take action! 试卷第1页，共3页 试卷第1页，共3页 学科网（北京）股份有限公司 $