八年级上册Unit4单元小测试题
参考答案
题号 1 2 3 4 5 6 7 8 9 10
答案 D C B B D A B D C D
题号 11 12 13 14 15 16 17 18 19 20
答案 D C C B B C E A F B
1．D 2．C 3．B 4．B 5．D 6．A 7．B 8．D 9．C 10．D
【导语】本文介绍了观鸟活动在中国流行，以关翔宇为例讲述观鸟爱好者的情况，还提及北京适合鸟类的原因及观鸟对保护鸟类生存空间的意义。
1．句意：这些年，它在中国变得流行。
exciting令人兴奋的；cheerful愉快的；excellent卓越的；popular流行的。根据“Birdwatching has fans all over the world.”可知，在中国变得流行。故选D。
2．句意：北京奥林匹克森林公园是观鸟的最佳地方之一。
hardest最难的；tiniest极小的；best最好的；coldest最冷的。根据“The Olympic Forest Park in Beijing is one of the ... places for birdwatching”可知，这里想说森林公园是最佳的观鸟地之一。故选C。
3．句意：他担任鸟类爱好者的组织者。
for为了；as作为；with和……一起；of……的。根据“He works ... an organizer for bird lovers”可知，work as...“担任……工作”为常用表达，这里表示担任组织者。故选B。
4．句意：他花半年时间待在北京，另外半年和团队旅行，在不同季节寻找不同种类的鸟。
waiting for等待；looking for寻找；asking for请求；preparing for为……做准备。根据“He spends half a year staying in Beijing and the other half travelling with his teams, ... different kinds of birds”可知，观鸟要先寻找鸟。故选B。
5．句意：他在北京长大，但是他不知道城市里有这么多种类的鸟。
so所以；and和；or或者；but但是。根据“He grew up in Beijing ... he didn’t know there were so many kinds of birds in the city”可知，“在北京长大”和“不知道在北京有很多鸟”之间是转折关系，所以用but连接。故选D。
6．句意：关在他的大学老师建议他参加一次鸟类保护活动后，开始对鸟表现出兴趣。
interest兴趣；way方式；answer答案；sense感觉。根据“Guan began to show ... in birds after his college teacher advised him to join in a bird protection activity”可知，这里表示自从参加了鸟类活动后，对鸟产生兴趣。故选A。
7．句意：“对我来说，最大的快乐就是分享终于看到我正在寻找的鸟的兴奋。”关说。
quickly快速地；finally最终；easily容易地；usually通常。根据“To me, the biggest joy is to share the excitement ... seeing a bird that I am looking for”可知，这里表示最终看到自己正在寻找的鸟类的兴奋之情。故选B。
8．句意：主要原因是北京处于一条重要的飞行路线上。
problem问题；example例子；symbol象征；reason原因。根据“The main ... is that Beijing is on an important flyway”可知，这里是在解释北京适合鸟类栖息的原因。故选D。
9．句意：每当这样做时，它们经过北京。
work工作；break打破；pass经过；look看。根据“When doing this, they ... through Beijing”可知，这里表示鸟迁徙会经过北京。故选C。
10．句意：关希望更多人将会享受观鸟的乐趣并帮助保护鸟类的生存空间。
store储存；connect连接；live居住；protect保护。根据“Guan hopes more people will enjoy birdwatching and help ... birds’ living space”可知，这里表示保护鸟类生存空间。故选D。
11．D 12．C 13．C 14．B 15．B
【导语】本文主要介绍了一个特殊的捕鱼团队——人类和海豚，他们合作捕鱼，实现了共赢。
11．词义猜测题。根据“In a coastal city of Brazil, there is a special fishing team. It is made up of human fishers and dolphins! They work together to catch the same fish—the mullet”以及“Mauricio Cantor from Oregon State University, the US, studied this”可知在巴西的一个沿海城市，有一支特殊的捕鱼队，它是由人类渔民和海豚组成的，他们一起捕捞同一条鱼——鲻鱼，美国俄勒冈州立大学的Mauricio Cantor对此进行了研究，this指代的是渔民和海豚合作的捕鱼队。故选D。
12．细节理解题。根据“Once the fish are caught in the nets, dolphins can move in and get some for themselves.”以及“After dolphins find fish, they drive fish to the coast. Then they arch (拱起) their backs in front of the fishermen to tell them to cast nets (撒网). Fishermen will then cast the nets right away, or they may lose the best chance”可知，海豚和渔民的合作流程为：海豚在水中找到鱼④；海豚将鱼驱赶到海岸⑤；海豚拱起背部示意渔民①；渔民投网②；海豚捕食剩余的鱼③。故选C。
13．推理判断题。根据“The study found that fishermen are 17 times more likely to catch fish by working with dolphins. At the same time, the helpful dolphins have 13 percent higher survival rates (存活率) than other dolphins.” 可知，渔民和海豚的合作关系使渔民捕鱼效率提高，同时也提高海豚的生存率，体现了双赢的局面。故选C。
14．推理判断题。根据“But they give us an idea of how positive our human interactions can be with nature”可知，最后一段告诉我们人类可以与动物进行积极的合作。故选B。
15．最佳标题题。通读全文可知，本文主要讲述了渔民和海豚的合作捕鱼。以选项B“合作捕鱼”为标题最合适。故选B。
16．C 17．E 18．A 19．F 20．B
【导语】本文主要介绍了水稻的起源、种植方式和用途。
16．根据“Some kinds are planted in South China.”可知前面是在说水稻有很多种类，C选项 “有很多种类的水稻”符合语境，起到引出下文关于水稻种类内容的作用。故选C。
17．根据“But no one really knows where it first came from.”以及“According to some books, people began to grow rice in China about 10,000 years ago.”可知此处介绍水稻的起源，E选项“一些科学家认为它最早是在亚洲被种植的”，既承接了关于水稻起源不确定的内容，又为后文提到在中国种植水稻做了铺垫，符合逻辑。故选E。
18．根据“Rice can grow in dry soil (土壤), but most rice grows in wet soil. People in many countries use their hands to do all of the work of growing rice.”可知，此处是在介绍水稻的种植方式，A选项“人们如何种植它”能准确概括这部分内容，作为小标题合适。故选A。
19．根据“People in many countries use their hands to do all of the work of growing rice.”可知此处介绍种植水稻的方式，F选项“在一些国家，人们现在在稻田里使用机器”，与前文用手种植形成对比，补充了现在种植水稻方式的多样性，使内容更完整。故选F。
20．根据“It can be used to make animal feed and rice oil. People make other useful things such as baskets, shoes and roofs for their houses from it. Also, they burn dry rice plants in fires for cooking.”可知，此处在介绍水稻植株的各个部分都能被利用，B选项“人们使用水稻植株的每一部分”能够很好地概括这部分关于水稻用途的内容，作为小标题恰当。故选B。
21．swimmers
【详解】句意：张雨霏是中国最优秀的游泳运动员之一。根据“one of the best…in China”以及提示词可知，此处指“中国最优秀的游泳运动员之一”，one of the+形容词最高级+可数名词复数“最……的……之一”，空处应用复数名词swimmers“游泳者”。故填swimmers。
22．tallest
【详解】句意：艾米是她班上最高的学生。根据“in her class”可知，三者以上的比较应用形容词最高级。故填tallest。
23．happiness
【详解】句意：她在日常生活中找到了幸福并且她过着幸福的生活。空格处在动词后作宾语，所以用名词形式。happy的名词形式为happiness，为不可数名词，故填happiness。
24．Actually
【详解】句意：事实上，城市漫步是一种新的旅行方式。设空处修饰整个句子，应使用副词，actually“事实上”符合语境，故填Actually。
25．mushrooms
【详解】句意：我想买一些香肠、蘑菇、洋葱和奶酪来做披萨。mushroom为可数名词，意为“蘑菇”。句中“some”后接可数名词时，名词需用复数形式。mushroom的复数形式为mushrooms。故填mushrooms。
26．disappointed
【详解】句意：当他听到这个令人失望的消息时，他看起来很失望。 looked为感官系动词，后加形容词作表语，此处主语“he”是人，disappoint应变为形容词“disappointed”，意为“失望的”，符合语境。故填disappointed。
27．Humans
【详解】句意：人类需要在濒危动物永远从地球消失之前保护它们。根据空后的need可知，主语要用复数名词；设空位于句首，首字母要大写，故填Humans。
28．folding
【详解】句意：这个折叠桌在不使用时易于存放。根据“table”可知，此处应填形容词修饰名词，fold“折叠”，动词，其形容词形式是“folding”，意为“可折叠的”。故填folding。
29．goodness
【详解】句意：他的故事总是充满了真理和人性的善良。good“优良的，善良的”，是形容词，作为动词短语are filled with的宾语，用名词，故填goodness。
30．biggest
【详解】句意：中国是亚洲最大的国家，历史悠久。根据the和所给单词可知，此处应用形容词最高级，big的最高级形式为biggest，意为“最大的”，作定语。故填biggest。
31．lively
【详解】句意：吴老师总是有很好且特殊的教学方法，使他的课堂生动有趣。 根据“and interesting”可知，此处应用形容词lively“生动的”，作宾语补足语。故填lively。
32．most popular
【详解】句意：上海是世界上最受欢迎的城市之一。根据“Shanghai is one of the…(popular) cities in the world.”可知，此处是指最受欢迎的城市之一，为固定结构one of the+形容词最高级+名词复数形式，表示“最……之一”，popular的最高级为most popular。故填most popular。
33．to communicate
【详解】句意：这个善于交际的女孩建议我们以友好的方式与他人交流。根据句子结构可知，“advise sb. to do sth.”为固定用法，意为“建议某人做某事”，其中“to do sth.”作宾语补足语；所给词“communication”为名词，意为“交流”，其动词形式为“communicate” ，所以此处应填“to communicate”。故填to communicate。
34．without
【详解】句意：没有空气和水，人类就会死亡。根据“Humans will die …air or water.”，结合所给词可知，此处应该表达没有空气和水，人类就会死亡。此处应该填入without，介词，意为“没有”符合句意。故填without。
35．importance
【详解】句意：我们应该知道保护野生动物的重要性。分析题干可知，空处缺少名词作宾语，所以空处应填important的名词形式importance“重要性”。故填importance。
36．(p)rotect
【详解】句意：对我们来说，保护处于危险中的动物们是必要的。根据首字母提示和“animals in danger”可知，此处表示保护濒危动物。动词protect“保护”符合语境。故填(p)rotect。
37．(s)tore/(s)hop
【详解】句意：这家商店里的鞋子比那家店里的便宜多了。根据“The shoes in this...are much cheaper than those in that one.”和首字母s可知，比较的是两家商店里的鞋子，this修饰单数名词，store/shop意为“商店”，名词，在句中作宾语。故填(s)tore/(s)hop。
38．(p)opular
【详解】句意：哈尔滨很受游客欢迎，尤其是在这个季节。根据“with tourists, especially in this season.”以及首字母提示，此处是说哈尔滨很受游客欢迎，popular“受欢迎的”符合题意，作表语。故填(p)opular。
39．(s)hot
【详解】句意：后羿射下第九个太阳后，人们的生活又恢复了正常。根据“After Hou Yi...the ninth sun”以及首字母提示可知，此处表示后羿射下第九个太阳。shoot“射击”，根据“became”可知，时态为一般过去时，谓语动词用过去式shot。故填(s)hot。
40．(p)ercent
【详解】句意：海洋覆盖了地球表面约百分之七十。percent意为“百分之……”，符合题意。故填(p)ercent。
41．(w)ithout
【详解】句意：很难想象一个没有音乐的世界。根据句意和首字母可知，此处用介词without表示“没有”。故填(w)ithout。
42．(c)ommunicate
【详解】句意：我们经常通过电子邮件与老师交流。根据“by email”及首字母可知，是指通过邮件与老师交流，communicate“交流”，根据“often”可知，时态是一般现在时，主语是We，动词用原形。故填(c)ommunicate。
43．(i)mportance
【详解】句意：我们应该意识到学英语的重要性。根据“the...of learning English.”及首字母可知，空处指“重要性”，需名词importance，故填(i)mportance。
44．(b)amboo
【详解】句意：熊猫主要吃竹子。根据“Pandas mainly eat…”以及首字母提示可知，此处说的是主要吃竹子，bamboo意为“竹子”，不可数名词。故填(b)amboo。
45．(l)and
【详解】句意：这个地区九分之二的土地被树木和草所覆盖。结合首字母和“Two ninths of the...in this area”可知，这里是指土地，land“土地”符合语境。故填(l)and。
46．(w)eighs
【详解】句意：——这头蓝鲸多重？——据我所知，它重约181,000公斤。根据首字母以及“How heavy is the blue whale ”可知，横线处表达“重”，对应的英文为weigh，it为第三人称单数，时态为一般现在时，动词用三单形式。故填(w)eighs。
47．(l)ively
【详解】句意：上海是一个充满活力的城市，夜晚灯火通明。根据“Shanghai is a ... city with colourful lights shining at night.”及首字母可知，上海是一个充满活力的城市，lively“充满活力的”符合，形容词作定语修饰名词city。故填(l)ively。
48．
(t)ool
【详解】句意：带一把雨伞。它是雨天有用的工具。根据“Take an umbrella with you.”可知，此处是指伞是有用的工具，tool“工具”。a后接名词单数。故填(t)ool。
49．(e)xcept
【详解】句意：每个人都在教室里，除了杰克，因为他发烧了，没有去上学。根据“because he had a fever and didn’t go to school.”可知，除了杰克，其他人都在教室里，except“除了”符合题意。故填(e)xcept。
50．(b)utterfly
【详解】句意：小女孩想在花园里追一只蝴蝶。但它飞走了。根据“But it flies away”以及首字母提示可知，小女孩想要追一只蝴蝶，根据空格前的“a”可知，空格所填词为可数名词单数，butterfly“蝴蝶”，单数可数名词。故填(b)utterfly。
51．African 52．difference 53．smaller 54．to cool 55．on 56．weighs 57．eating 58．Their 59．But 60．the
【导语】本文介绍了大象的种类、外貌特征、生活习性以及它们在陆地哺乳动物中的一些独特之处。
51．句意：有两种大象，非洲象和亚洲象。根据“elephants”可知，此处需要形容词修饰名词，Africa的形容词形式是African，表示“非洲的”。故填African。
52．句意：它们之间的主要区别是亚洲象的耳朵小得多。根据“The main”可知，此处需要名词作主语，different的名词形式是difference，表示“区别，不同”。故填difference。
53．句意：它们之间的主要区别是亚洲象的耳朵小得多。根据“much”可知，此处需要形容词的比较级形式，表示程度上的更大或更小，small的比较级是smaller，表示“更小的”。故填smaller。
54．句意：非洲象在夏天用它的大耳朵来降温。根据“uses its bigger ears”可知，此处需要动词不定式作目的状语，表示使用大耳朵的目的，cool的动词不定式形式是to cool，表示“来降温”。故填to cool。
55．句意：大象用它们的脚来感受地面上的震动。根据“the ground”可知，此处表示震动在地面上的位置，on the ground“在地面上”。故填on。
56．句意：一头成年大象重约5000公斤。根据“an adult elephant”可知，此处表示一般事实，时态用一般现在时，主语是第三人称单数，谓语动词用三单形式，weigh的三单形式是weighs，表示“重”。故填weighs。
57．句意：成年大象每天花15到18个小时吃250到300公斤的食物。根据“spend 15 to 18 hours a day”可知，此处考查固定搭配spend time doing sth.，表示“花费时间做某事”，因此用eat的动名词形式eating，表示“吃”。故填eating。
58．句意：它们的视力很差。根据“eyesight”可知，此处需要形容词性物主代词修饰名词，they的形容词性物主代词是Their，表示“它们的”。故填Their。
59．句意：但是不要对它们感到沮丧。根据“don’t be upset with them”可知，此处与前文构成转折关系，需要连词but表示“但是”，且位于句首，首字母大写。故填But。
60．句意：大象是陆地上哺乳动物中大脑最大的！根据“biggest brain”可知，此处表示最高级，需要定冠词the修饰最高级形式。故填the。
61．例文
The blue whales are the largest animals in the world. They live in the ocean and feed on small animals in the ocean.
The blue whale is facing a serious situation. There are fewer blue whales in the ocean every year because of hunting and pollution. To protect blue whales, humans need to take measures such as reducing pollution to keep the oceans clean and banning blue whale hunting.
Protecting the blue whale not only requires the joint efforts of the international community, but also requires everyone to start from the small things in daily life.
【详解】[总体分析]
①题材：本文是一篇材料作文；
②时态：时态为一般现在时；
③提示：写作要点已给出，涵盖蓝鲸的基本情况、面临的困境及保护措施，注意不要遗漏提示中的要点，可适当添加细节，并突出保护蓝鲸这一核心要点。
[写作步骤]
第一步，先介绍蓝鲸的基本信息，包括其是世界上最大的动物、生活环境及食物来源。
第二步，再描述蓝鲸面临的严峻处境，即数量逐年减少及原因，接着说明保护蓝鲸的措施。
[亮点词汇]
①feed on 以……为食
②face a serious situation 面临严峻的处境
③joint efforts 共同努力
[高分句型]
①They live in the ocean and feed on small animals in the ocean.（and连接两个并列的谓语动词）
②To protect blue whales, humans need to take measures such as reducing pollution to keep the oceans clean and banning blue whale hunting.（动词不定式作目的状语）八年级上册Unit4单元小测试题（100分）
一、完形填空（20分）
Birdwatching has fans all over the world. In these years, it becomes 1 in China. The Olympic Forest Park in Beijing is one of the 2 places for birdwatching. Many bird lovers visit the park to take photos or just to watch the birds. Guan Xiangyu is one of them. He works 3 an organizer for bird lovers. He spends half a year staying in Beijing and the other half travelling with his teams, 4 different kinds of birds, in different seasons.
Guan started birdwatching over 10 years ago. He grew up in Beijing 5 he didn’t know there were so many kinds of birds in the city. Guan began to show 6 in birds after his college teacher advised him to join in a bird protection activity. “To me, the biggest joy is to share the excitement of 7 seeing a bird that I am looking for,” Guan said.
Beijing is a good place for birds. And experts (专家) record more than 500 species (物种) there. The main 8 is that Beijing is on an important flyway. Millions of birds migrate (迁徙) north and south every year. When doing this, they 9 through Beijing.
Guan hopes more people will enjoy birdwatching and help 10 birds’ living space. Birds are part of Guan’s life. “I will always see them as my friends,” Guan said.
1．A．exciting B．cheerful C．excellent D．popular
2．A．hardest B．tiniest C．best D．coldest
3．A．for B．as C．with D．of
4．A．waiting for B．looking for C．asking for D．preparing for
5．A．so B．and C．or D．but
6．A．interest B．way C．answer D．sense
7．A．quickly B．finally C．easily D．usually
8．A．problem B．example C．symbol D．reason
9．A．work B．break C．pass D．look
10．A．store B．connect C．live D．protect
二、阅读理解（20分）
（一）
In a coastal city of Brazil, there is a special fishing team. It is made up of human fishers and dolphins! They work together to catch the same fish—the mullet (鲻鱼).
Mauricio Cantor from Oregon State University, the US, studied this. As he told Science News Explores, this partnership started more than a century ago.
“The dolphins are really good at finding fish in the murky (浑浊的) water and driving them to the coast,” Cantor said. “The fishermen are really good at catching the fish with their nets.” Once the fish are caught in the nets, dolphins can move in and get some for themselves.
Cantor’s study described how fishermen and dolphins give cues to each other during fishing. After dolphins find fish, they drive fish to the coast. Then they arch (拱起) their backs in front of the fishermen to tell them to cast nets (撒网). Fishermen will then cast the nets right away, or they may lose the best chance. “Fishermen need to be well-trained to understand the cues from dolphins,” said Cantor.
The study found that fishermen are 17 times more likely to catch fish by working with dolphins. At the same time, the helpful dolphins have 13 percent higher survival rates (存活率) than other dolphins.
“Human-animal partnerships have been hard to see throughout history. But they give us an idea of how positive our human interactions (互动) can be with nature,” Cantor said.
11．What does “this” in Paragraph 2 refer to
A．A city. B．A study. C．A university. D．A fishing team.
12．What is the right order of dolphins and fishermen working together according to the study
①dolphins arch their backs ②fishermen cast nets ③dolphins move in and get fish④dolphins find fish in the water ⑤dolphins drive fish to the coast
④③②⑤① B．⑤①③②④
C．④⑤①②③ D．⑤②①④③
13．In Paragraph 5, the author mainly wants to show this partnership _________.
A．should be improved and changed
B．must last for a long time in history
C．might result in a win-win situation
D．could be in danger and end up soon
14．What’s the writer’s real purpose in the last paragraph
A．To introduce how to cooperate with animals.
B．To tell us that humans can cooperate with animals positively.
C．To question the partnerships between humans and nature.
D．To explain the reasons why human-animal partnerships are popular.
15．What would be the best title for the passage
A．Train Hard to Win B．Team Up to Fish
C．Get Close to Nature D．Say No to Animals
（二）
Rice is a very common kind of food in life. Lots of people in Asia, Africa and South America eat it every day. Some people eat almost nothing but rice. Rice is a kind of plant. 16 Some kinds are planted in South China.
Where it came from
Farmers now grow rice in many countries. But no one really knows where it first came from. 17 According to some books, people began to grow rice in China about 10,000 years ago.
18
Rice can grow in dry soil (土壤), but most rice grows in wet soil. People in many countries use their hands to do all of the work of growing rice. This is the same way farmers worked hundreds of years ago. 19
What people use it to do
20 It can be used to make animal feed and rice oil. People make other useful things such as baskets, shoes and roofs for their houses from it. Also, they burn dry rice plants in fires for cooking.
A．How people grow it
B．People use every part of the rice plant.
C．There are many kinds of rice.
D．Why people grow it
E．Some scientists think that it started to be grown in Asia.
F．In some countries, people now use machines in their rice fields.
答案________________________________________________
三、根据首字母或者所给单词正确形式填空。（30分）
21．Zhang Yufei is one of the best (swim) in China.
22．Amy is the (tall) student in her class.
23．She finds (happy) in her daily life and she leads a happy life.
24． (actual), the city walk is a new type of travelling.
25．I’d like to buy some sausages, (mushroom), onions and cheese to make a pizza.
26．When he heard the disappointing news, he looked very (disappoint).
27． (human) need to protect endangered animals before they disappear from the earth forever.
28．The (fold) table can be easily stored when not in use.
29．His stories are always filled with truth and human (good).
30．China is the (big) Asian country and it has a long history.
31．Mr Wu always has a good and special teaching way to make his class (live) and interesting.
32．Shanghai is one of the (popular) cities in the world.
33．The sociable girl advised us (communication) with others in a friendly way.
34．Humans will die (with) air or water.
35．We should know the (important) of protecting wild animals.
36．It is necessary for us to p animals in danger.
37．The shoes in this s are much cheaper than those in that one.
38．Harbin is p with tourists, especially in this season.
39．After Hou Yi s the ninth sun, people’s life became normal again.
40．Oceans cover about seventy p of the earth’s surface.
41．It’s hard to imagine a world w music.
42．We often c with teachers by email.
43．We should realize the i of learning English.
44．Pandas mainly eat b .
45．Two ninths of the l in this area is covered with trees and grass.
46．—How heavy is the blue whale
—As far as I know, it w about 181,000 kilos.
47．Shanghai is a l city with colourful lights shining at night.
48．Take an umbrella with you. It’s a useful t on rainy days.
49．Everyone was in the classroom e Jack because he had a fever and didn’t go to school.
50．The little girl wants to run after a b in the garden. But it flies away.
四、短文填空（15分）
Elephants are among the biggest mammals in the world. There are two kinds of elephants, the 51 (Africa) elephants and the Asian elephants. The main 52 (different) between them is that the Asian one has much 53 (small) ears. The African elephant uses its bigger ears 54 (cool) during the summer. The elephants use their feet to feel the vibrations (震动) 55 the ground.
Most adult elephants have two tusks (长牙). They can be as long as 2 metres. An adult elephant reaches 3 to 4 metres—many times taller than a baby one. And an adult elephant 56 (weigh) about 5, 000 kg. Adult elephants spend 15 to 18 hours a day 57 (eat) 250 to 300 kilos of food. Elephants can live up to about 70 years.
58 (they) eyesight (视力) is very poor. 59 don’t be upset with them. The elephant has 60 biggest brain among the mammals on land!
51.___________ 52.____________ 53____________54.____________55.__________
56.___________ 57.___________ 58____________59.____________60.__________
五、书面表达（15分）
蓝鲸是世界上最大的动物。最近一次的科学调查中，同学们发现它们正濒临灭绝。请你根据下面的表格信息，写一篇不少于80词的英语短文，呼吁人们保护蓝鲸。
栖息地 海洋
食物 海洋中的小型动物
濒临灭绝的原因 （1）海洋受到污染（pollute）； （2）受到人类捕杀。
严峻的形势 每年海洋中的蓝鲸越来越少。
措施 （1）保持海洋干净； （2）禁止捕杀蓝鲸。
The blue whales are the largest animals in the world.
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