专题1 阅读理解-人与自然-【辽海备考·中考总复习】2026年中考英语总复习（含模拟卷）

考点2物主代词（用所给词的适当形式填空） 1.my;yours 2.her 3.ours;theirs 4.our;his 5.its 6.your;hers 7.their 8.our 9.Its 10.his;His 11. their 12.my 13.its 14.our;yours 15.her 16.their 17.their;ours 18.our 19.her 20.their 考点3反身代词（用所给词的适当形式填空） 1.herself 2.ourselves 3.yourself 4.itself 5.them- selves 6.himself 7.herself 8.yourself 9.themselves 10.itself 11.ourselves 12.himself 13.itself 14.them- selves 15.herself 16.yourself 17.itself 18.ourselves 19.himself 20.themselves 考点4不定代词（在some,any,the other,,the others,none,al,another中选择合适的不定代词填空) 1.the other 2.any 3.all 4.some 5.none 6.some 7.Some 8.any 9.the other 10.none 11.some 12.all 13.another 14.None 15.the others 16.any 17. another 18.All 19.none 20.all 考点5疑问代词（在空格处填上合适的疑问代词） 1.whose;Whom;What;Who 2.Which:What:Who 3.What:Which 4.Which;Which 5.Which;What 专题九数词 考点1基数词（翻译每个数字并总结变形规则） 1.one 2.two 3.three 4.four 5.five 6.six 7. seven 8.eight 9.nine 10.ten 11.eleven 12.twelve 13.thirteen 14.fourteen 15.fifteen 16.sixteen 17. seventeen 18.eighteen 19.nineteen 20.twenty 21. thirty 22.forty 23.fifty 24.sixty 25.seventy 26. eighty 27.ninety 28.hundred 29.thousand 30.million 基数词综合练习 一、句子填空（根据所给数字填入基数词） 1.seven 2.eight 3.twenty-seven 4.twenty 5.one hundred 6.ninety 7.nine 8.six thousand 9.fifteen 二、语篇填空（根据括号中的提示数词填写基数词） 1.Sixteen 2.nine 3.thirteen 4.eleven 5.twelve 6.nineteen 7.seventeen 8.three 9.one hundred 10.eighty 考点2序数词（翻译每个数字并总结变形规则） 1.first 2.second 3.third 4.fourth 5.fifth 6.sixth 7.seventy 8.eighth 9.ninth 10.tenth 11.eleventh 12.twelfth 13.thirteenth 14.fourteenth 15.fifteenth 16 sixteenth 17.seventeenth 18.eighteenth 19.nineteenth 参考答案 20.twentieth 21.thirtieth 22.fortieth 23.fiftieth 24. sixtieth 25.seventieth 26.eightieth 27.ninetieth 28. hundredth 序数词综合练习 一、句子填空（根据所给数字填出序数词） 1.twelfth 2.fifth 3.ninth 4.nineteenth 5.fifteenth 6.third 7.twelfth 8.first 9.second 10.seventh 二、语篇填空（根据括号中的提示数字填写序数词） 1.twentieth 2.first 3.third 4.fifth 5.second 6.twelfth 7.first 8.ninth 9.eighth 10.first 考点3基数词与序数词转换 一、句子填空（用括号所给的数词的适当形式填空） 1.twelfth;nine;five;fifteen 2.twentieth;eighteen;three;Two 3.ninth;fourteen;twice 4.seven;sixteen;twenty;ninety 5.first;nineteen;third;eleven 二、语篇填空 1.first 2.twelve 3.eight 4.nine 5.third 6.five 7.twenty 8.seven 9.forty 10.tenth 第二模块题型专练 专题一阅读理解 人与自我一生活与学习一1.丰富、充实、积极向上的 生活 A 1.A2.D3.C4.B B 1.D2.A3.C4.A 人与自我一生活与学习一2，多彩、安全、有意义的学 校生活 A 1.A2.B3.D4.A B 1.C2.A3.B4.A 人与自我一生活与学习一3.身心健康，抗挫能力，珍 爱生命的意识 A 1.C2.A3.D4.C 1.D2.D3.B4.B 人与自我一生活与学习一4.积极的学习体验，恰当的 学习方法与策略 A 1.A2.A3.D4.C 中考总复习·英语 B 1.C2.B3.A4.D 1.C2.D3.C4.A 人与自我一生活与学习一5.自我认识，自我管理，自 B 我提升 1.D2.D3.B4.C A 人与社会一社会服务与人际沟通范畴一4.交流合作， 1.B2.D3.D4.C 团队精神 B 4 1.A2.B3.C4.A 1.A2.B3.D4.A 人与自我一做人与做事一6.职业启蒙，职业精神 B A 1.B2.B3.C4.A 1.C2.C3.D4.B 人与社会一社会服务与人际沟通范畴一5.家乡和社会 B 的变迁，历史的发展，对未来的畅想 1.B2.C3.A4.A A 人与自我一做人与做事一7.劳动实践，劳动品质与工 1.D2.A3.B4.B 匠精神 B A 1.D2.A3.B4.C 1.D2.D3.C4.B 人与社会一社会服务与人际沟通范畴一6.跨文化沟通 B 与交流，语言与文化 1.B2.C3.A4.D A 人与自我一做人与做事一8.货币常识，理财意识，理 1.C2.A3.C4.D 性消费，信用维护 B A 1.D2.B3.A4.D 1.A2.D3.A4.C 人与社会一文学、艺术与体育一7.中外影视、戏剧、 B 音乐、舞蹈、绘画、建筑等艺术形式中的文化价值和作品 1.A2.C3.B4.B 赏析，优秀的艺术家及其艺术成就 人与自我一做人与做事一9.勤于动手，乐于实践，敢 4 于创新 1.A2.C3.D4.D A B 1.D2.D3.B4.D 1.C2.B3.C4.D B 人与社会一文学、艺术与体育一8.日常体育活动，重 1.B2.C3.C4.D 大体育赛事，体育精神 人与社会一社会服务与人际沟通范畴一1.良好的人际 关系与人际交往 1.A2.D3.B4.D A B 1.A2.D3.B4.C 1.A2.D3.A4.C B 人与社会一文学、艺术与体育一9.中外文学史上具有 1.B2.C3.A4.B 代表性的作家和作品 人与社会一社会服务与人际沟通范畴一2.和谐家庭与 社区生活 1.A2.B3.D4.B A B 1.D2.C3.D4.B 1.B2.B3.D4.D B 人与社会一历史、社会与文化一10.世界主要国家的 1.C2.A3.C4.B 文化习俗与文化景观、节假日与庆祝活动 人与社会一社会服务与人际沟通范畴一3.志愿服务与 公共服务 1.A2.D3.B4.D 224 B 1.D2.A3.C4.C 人与社会一历史、社会与文化一1.对世界、国家、人 民和社会进步有突出贡献的人物 A 1.A2.B3.D4.C B 1.C2.B3.C4.A 人与社会一历史、社会与文化一12.公共秩序与法律 法规，个人信息安全与国家安全意识 A 1.C2.D3.B4.A B 1.C2.B3.C4.D 人与社会一历史、社会与文化一3.身份认同与文化 自信 A 1.B2.A3.C4.C B 1.B2.D3.C4.C 人与社会一历史、社会与文化一14.社会热点与国际 事务 A 1.D2.C3.C4.B B 1.B2.C3.B4.A 人与社会一科学与技术一15.科学技术与工程，人类 发明与创新 A 1.B2.A3.C4.C B 1.B2.D3.A4.D 人与自然一自然生态一1.世界主要国家地理及位置， 不同地区的生态特征与自然景观 1.C2.B3.A4.C B 1.A2.B3.B4.C 人与自然一自然生态一2热爱与敬畏自然，与自然和 谐共生 1.A2.B3.B4.C B 1.A2.C3.A4.A 2 参考答案 人与自然一环境保护一3.环境污染及原因，环保意识 和行为 A 1.D2.C3.D4.A B 1.B2.A3.C4.B 人与自然一灾害防范一4.自然灾害与防范措施，人身 安全与自我保护 A 1.D2.B3.C4.A B 1.B2.C3.A4.C 人与自然一宇由探索一5.地球与宇由探秘，航天事业 发展 A 1.D2.B3.B4.C B 1.D2.A3.B4.B 专题二阅读五选四 人与自我一生活与学习一1.丰富、充实、积极向上的 生活 1.C2.A3.B4.E 人与自我一生活与学习一2.多彩、安全、有意义的学 校生活 1.C2.E3.A4.D 人与自我一生活与学习一3.身心健康，抗挫能力，珍 爱生命的意识 1.B2.D3.E4.A 人与自我一生活与学习一4.积极的学习体验，恰当的 学习方法与策略，勤学善思 1.D2.E3.B4.A 人与自我一做人与做事一5.自我认识，自我管理，自 我提升 1.A2.E3.C4.D 人与自我一做人与做事一6.职业启蒙，职业精神 1.C2.E3.A4.D 人与自我一做人与做事一7，劳动实践，劳动品质与工 匠精神 1.B2.E3.A4.C 人与自我一做人与做事一8.货币常识，理财意识，理 性消费，信用维护 1.B2.E3.D4.A 人与自我做人与做事一9.勒于动手，乐于实践，敢 于创新第二模块题型专练 exams,he liked to take apart old electronics.When he was 19,with only 200 yuan of cheap parts, he made his first walking robot.This showed his talent in robots.In college,he made XDog,a low-cost four-legged robot and won some awards. In 2016,Wang started Unitree Robotics.He wanted to make robots that more people could afford.By 2025,his HI humanoid robots,which cost 650,000 yuan,became famous after the Spring Festival Gala show.These robots combined (old Chinese dances with new technology and were very popular on the Internet. Wang wasn't good at all subjects,but he never gave up on making robots.He tells young people,"Don't let your weak points stop you.Keep trying!"His story shows that we don't have to be perfect in everything.Just focus on what we love. ()1.How did Wang Xingxing become famous? A.He won a big prize in a physics competition. B.His robots danced at the Spring Festival Gala. C.He gave a great speech at a big match. D.He wrote a popular book about robots. ()2.What was Wang Xingxing like in school? A.He was good at English. B.He did well in all subjects. C.He was poor in physics but good at chemistry. D.He was weak in English but good at physics. ()3.Why did Wang start Unitree Robotics? A.To make cheap robots. B.To make more money. C.To show his love for dancing. D.To become a famous dancer. ()4.What can we learn from Wang Xingxing's story? A.We should be good at all subjects. B.It's easy to be famous if we make robots. C.Only people who are good at technology can succeed. D.Don't be afraid of our weak points and keep working hard on our interests. 人与自然一自然生态一1.世界主要国家地理及位置，不同地区的生态特征与自然景观 Standing on the beach of Copacabana,I come to realize that any understanding of Brazil really begins on its beaches.Everyone here has his or her perfect beach and is ready to tell you 97 中考总复习·英语 where to find it.I'm happy to take people's advice,but my final goal is to find my own dream beach. I head to Bahia,a place with Brazil's best coastline.Over the centuries,people of many races have arrived here,creating a wonderful cultural mix.This mix influences Bahia's language, food,music,and dance. On arriving at one of Bahia's best beaches-Prainha,I discover its golden sand lined by a row of perfect trees,moving softly in the ocean wind.As I enter the water,I have the feeling of swimming through moonlight.Prainha's beauty is like something you might see in a postcard.But for me,it's a little too perfect.A I continue my search,heading north to Maceio,a fisherman's beach.Boats lie on their sides while nets hang out to dry on lines between fishermen's houses.We eat on the beach and later rest near the table.It's a great day,but I have one final place to visit. A few hundred kilometers out in the Atlantic,the islands of Fernando de Noronha are a national park,rich with birds and sea life.I visit a number of beaches on Fernando,but I leave the best one for last. The beach at Praia do Leao has perfect sand,sea and sky.The water is pale blue and warm, alive with colorful fish and other sea life;the sand is the color of honey.The rocks and strong winds have the touch of wildness I was looking for.I dig my toes in the sand deeply and imagine I can hold on to this place forever. ()1.Which is the first beach the writer visits? A.Maceio. B.Praia do Leao.C.Prainha. D.Copacabana. ()2.What can we learn from the passage? A.Prainha is a popular beach for fishermen. B.Bahia is a place with a wonderful cultural mix. C.The islands of Fernando are very rich in honey. D.Maceio's beauty is like something in a postcard. ()3.Which sentence can be put in the“▲_"？ A.The beach I'm searching for needs to be a little wilder. B.The beach I'm looking for is a place for fishermen to fish. C.The beach I'm searching for needs to be famous to tourists. D.The beach I'm looking for is popular with parents and children. ()4.What is the best title for this passage? A.An Unknown Beach B.Memories of Vacation C.The Perfect Beach D.A Tour of Education 98 第二模块题型专练 B You must have heard of the legend (of Yu Gong,who tried to move two mountains It was said that the Taihang Mountain was one of the two mountains.The Taihang Mountain passes through the areas of Hebei,Shanxi,Henan and Beijing.It is about 400 kilometers long.It is one of the largest mountain ranges in North China,and it was called "the backbone (of China"in ancient times. Many legends about the beginning of human civilization (come from the Taihang area.For example,Nvwa used stones to repair the sky to make sure that humans would have a better future;Houyi protected everyone by shooting the suns. The Taihang area is not only a place where the ancient stories happened,but also a place where tens of thousands of fossils (were found.These fossils show how the earth has changed over time.At the same time,we can also learn about how ancient humans lived from the discoveries around the area. Nowadays,there are natural forests around the area with beautiful colors in four seasons.In spring,the trees in the Taihang Mountain grow green leaves.In summer,the trees grow luxuriant and leaves go deep green.In autumn,the trees are tall and leaves turn yellow.In winter,the trees are covered with snow,like wearing a thick white coat.You can go there whenever you want because the scenery (is beautiful all year round. If you want to learn different things about history,culture and other important knowledge, you can come to the Taihang Mountain and feel its greatness. ()1.How does the writer introduce the topic of the passage? A.By mentioning a legend. B.By asking a question. C.By giving numbers. D.By comparing facts. ()2.What can show how humans lived around the Taihang area in ancient times? A.Natural forests. B.The fossils. C.Many legends D.Huge mountains. ()3.What does the passage tell us about the Taihang Mountain? ①Its location.②Its scenery..③Its height..④Its length. A.①②③ B.①②④ C.①③④ D.②③④ ()4.Why does the writer write the passage? A.To tell people how to take a trip to the Taihang Mountain. B.To introduce some discoveries around the Taihang area. C.To show the Taihang Mountain is a wonderful place to visit. D.To encourage people to learn more about ancient history. 99 中考总复习·英语 人与自然一自然生态一2.热爱与敬畏自然，与自然和谐共生 A Would you be able to sleep with one eye open?Bottlenose dolphins(宽吻海豚)can.When they sleep,only half of their brain goes to sleep.They sleep with one eye open to stay safe.Half of their brain sleeps for about two hours before the other half of their brain gets a chance to sleep.Sometimes,the dolphins will keep swimming while they are sleeping. Dolphins are not fish一they are mammals(哺乳动物).These mammals have lungs(肺). And they don't have gills (like fish.They are also warm-blooded and have to go to the surface of the water to get air into their lungs.Dolphins don't lay eggs.Their young are born alive,and they drink milk from their mothers.Dolphins are one of the smartest animals in the world.There are many stories about how they save people out of water.They are able to solve many problems like humans.They can even use tools to catch fish.But their cleverness doesn't end there. Dolphins can also pass on anything they learn to other dolphins,like interesting fishing skills.They communicate with each other in many ways.They use different sounds to talk to each other.Dolphins know the "voices"of other dolphins and even know exactly who is making which sound.Another thing that shows their cleverness is that they can also know themselves in a mirror (and check different parts of their body in it. ()1.Why do bottlenose dolphins sleep with one eye open? A.To stay safe. B.To sleep for two hours. C.To swim faster. D.To solve problems. ()2.What can we learn about dolphins from Paragraph 2? A.They use gills to get air. B.They are warm-blooded. C.They lay eggs like fish. D.They are interesting fish ()3.How do dolphins talk to each other? A.By learning fishing skills. B.By using different sounds. C.By checking their bodies. D.By looking at some mirrors. ()4.Which part of a magazine may the passage be taken from? A.Art. B.Health. C.Nature. D.Life. 100 第二模块题型专练 B Fraser Island is in Queensland,Australia,about 250 kilometers north of Brisbane.It is about 120 kilometers long and 20 kilometers wide.It is a very important island because it is completely made of sand,which is fertile (for different kinds of plants to grow.In fact,it is the largest sand island in the world.There is no airport on the island,but there is a long beach along the east coast.Planes arrive and leave from there. The sand makes unusual shapes.There are hills made of sand called sandblows.Nothing grows on them.They move one or two meters a year from the northwest toward the southeast of the island,getting bigger and bigger.In other places on the island,such as Rainbow Gorge,The Cathedral and Red Canyon,the sandy rocks have different colors.Sometimes the rocks are so brown that they turn the sea brown,like coffee. Surprisingly,the sandy island has a lot of different plants and animals.There are dark forests-eucalyptus (woods,beautiful flowers and over a hundred lakes.There are many kinds of birds,like owls and curlews ()There are many other animals there,too,such as crocodiles,flying foxes and wild dogs called dingoes. About 500,000 people visit the island every year to see the island's beauty and nature. People enjoy camping and hiking there.Unluckily,the visitors create problems.They damage plants and frighten animals.Their sun cream (makes the water dirty.So it is necessary to manage the visitors.For example,it is necessary to stop visitors using motorboats or going fishing in the lakes,and they need official papers to drive there. ()1.Why is Fraser Island a very important island? A.Because it's made of fertile sand. B.Because it has a long beach. C.Because it has a large airport. D.Because it is unusual in shape. ()2.What does the underlined word "dingoes"refer to? A.Beautiful birds. B.Dark forests. C.Wild dogs. D.Different plants. ()3.What can we know from the last paragraph? A.Fraser Island needs to be protected. B.Fraser Island has been seriously polluted. C.People will not be allowed to visit Fraser Island. D.Plants and animals are in danger on Fraser Island. ()4.What is the passage mainly about? 101 中考总复习·英语 A.Nature on Fraser Island. B.A trip to Fraser Island. C.Changes of Fraser Island. D.The life on Fraser Island. 人与自然一环境保护一3.环境污染及原因，环保意识和行为 A Koalas are cute and easy to recognize,with fluffy ears and a large,spoon-shaped nose. They're popular with people. They used to be common across Australia,but the last 200 years haven't been good for them.Their forests have been cut down and burnt in bushfires.Now,koalas are endangered,so it's necessary to make sure of koala populations by counting (them in different areas.This information can be used to find out where help is most needed.Then it'll become much easier to protect them and their homes. HOW TO COUNT KOALAS We can count koalas in different ways,such as: walking around and looking from the ground .sending up drones to look from the sky .recording koala calls .using trained dogs. HELP COUNT KOALAS!YOU WILL NEED ·a smartphone walking shoes,a hat and a backpack .binoculars(望远镜). Safety:Ask parents before you go into the forest.When you are outdoors,remember to be sun safe with a hat. WHAT TO DO TO COUNT KOALAS Fill in your personal information in Koala Spotter (an app). .Go out to the forest and search for koalas.Look up carefully in the trees. Report any koala sightings in the app. Remember to record when you don't see a koala. ()1.Why is it necessary to count koalas? A.Because people love them so much. B.Because they are easy to recognize. 102 第二模块题型专练 C.Because they are common across Australia D.Because their population information is helpful. ()2.How many ways are there to count koalas? A.2. B.3. C.4. D.5. ()3.What should be done first to count koalas? A.Search for koalas. B.Go out to the forest. C.Record when not seeing a koala. D.Fill in personal information. ()4.Who is the passage most probably written for? A.Teenagers.B.Workers. C.Teachers. D.Keepers. 小 It was reported in May 2024 that the China Wildlife Conservation Association (CWCA, 国野生动物保护协会)will send giant pandas Yun Chuan and Xin Bao to the San Diego Zoo in the United States,which is a symbol of a new 10-year period of international conservation partnership.The CWCA has organized experienced caretakers and doctors to go with the pandas to the US.The zoo is getting ready to provide the pandas with a larger and more comfortable living environment.It has also formed a team with special skills related with panda care,daily nursing,and scientific research. The cooperation (between the CWCA and the San Diego Zoo dates back to 1996 when Bai Yun and ShiShi became the first pair of pandas to live in the zoo.Giant pandas Hua Mei,born in 1999,and Mei Sheng,born in 2003,who used to live there,are the result of China-US giant panda research cooperation.Over the past twenty years,the two sides have cooperated and solved many technical problems,including important discoveries in key areas like panda raising Since the 1990s,China has cooperated on giant panda conservation with 20 countries. "International cooperation in fields such as disease prevention and control,treatment,and wild training and reintroduction to the wild,has achieved good results.Giant pandas will facilitate communication between people and let people around the world know China better,"said Li,the leader of the China Conservation and Research Center for the Giant Panda. “Scientific and educational outreach(延伸服务)also serves as a key role in international giant panda exchanges,allowing more people to understand giant pandas,which provides very good support for our efforts in protecting wild giant pandas,"Li said. ()1.China's sending Yun Chuan and Xin Bao to the San Diego Zoo means. A.a good living condition for pandas 103 4 中考总复习·英语 B.a new age of conservation cooperation C.a great achievement in scientific research D.a long-term plan for training panda caretakers ()2.What is Paragraph 2 mainly about? A.The history of the cooperation.B.The raising of the giant pandas. C.The lives of the pandas in the US.D.The process of solving the problems. ()3.What does the underlined word "facilitate"in Paragraph 3 probably mean? A.Expect. B.Create. C.Improve. D.Receive. ()4.What do we know from the last paragraph? A.Scientific research is well on its way. B.The outreach plays an important part. C.The cooperation requires international support D.Education about wildlife protection is a big success. 人与自然一灾害防范一4.自然灾害与防范措施，人身安全与自我保护 A FIRST AID FOR BURNS Degree of burns Treatment If you have a first-degree burn,follow these steps: DCool the burnt area under cool running water. ②Remove jewellery(去除配饰)and any clothing unless stuck to the burn. ③Apply(涂抹)a burn ointment or aloe vera.Don't use ice,eggs or oil. Prevention AAvoid touching hot water directly. ▲Stay away from fire.. 4Cover the burnt area with a clean cloth ADeal with chemicals under instructions. If the burn is serious,call 120 or go to the hospital ABe careful when using electricity. at once. ()1.If we touch boiling water by accident,what should we do first? A B D ()2.Which of the following can be used in the treatment of burns? A.Oil. B.Aloe vera. C.Eggs. D.Ice. 104 第二模块题型专练 ()3.What can we do to prevent ourselves getting burnt according to the material? ①Keep away from fire. 2Don't use electricity alone. 3Follow instructions when using chemicals. 4Don't touch hot water directly. A.①②③ B.①②④ C.①③④ D.②③④ ()4.In which part of a newspaper is the material probably from? A.Health Care. B.Science Study. C.Sports News. D.Travel Life. B You must hear about a typhoon,but how much do you know about it? A typhoon is one of the worst rainstorms.Most happen in July,August and September. How does a typhoon happen?When the sea water gets hot in the summer sun,it goes into the air.When the air gets warm enough,it starts to move higher up into the sky.Then cooler air around it goes in.After the air gets warmer,it starts to move quickly,making wind.The wind goes in circles and it keeps moving higher in the sky.The warmer the air gets,the quicker the wind moves.And when the wind moves faster than 30 meters a second,a typhoon begins. What to do when a typhoon hits? Stay indoors.Close all the windows and stay away from them. Try to bring all of your things indoors.Strong winds could even blow away your bikes! .Listen to the radio or watch TV for important news. ()1.When do typhoons usually happen? A.In spring and autumn. B.In summer and during the hot weather. C.In winter and when it's snowing. D.At any time throughout the year. ()2.In which order does a typhoon happen? a.The air gets warmer. b.The sun makes sea water hot. c.The wind moves fast enough,a typhoon starts. d.The air moves quickly,making wind. A.a-c-b-d B.a-d-b-c C.b-a-d-c D.b-d-a-c ()3.Which of the following is TRUE according to the passage? A.Watching TV for important news is OK when a typhoon happens. 105 中考总复习·英语 B.The typhoon can only blow away light things. C.The warmer the air gets,the slower the wind moves. D.A typhoon starts when the wind moves at a speed of over 20 meters per second. ()4.Where does the passage come from? A.A funny movie. B.A travel record. C.A science magazine. D.A weather report. 人与自然一宇宙探索一5.地球与宇宙探秘，航天事业发展 A Though oceans cover about 71 percent of the earth's surface,there's still a lot we don't know about them.Only about 20 percent of the seafloor has been mapped,and the remaining 80 percent is still a secret to us.Some scientists even think that 91 percent of sea animals have yet to be discovered. So why do we know so little about the deep sea?Well,getting to those depths is very difficult and requires high technology that simply didn't come into being for most of human history.The first navigable submarine(可驾驶的潜水艇)，for example,was built in 1620,and it couldn't go more than five meters below the surface.In fact,for a long time many scientists didn't even think that there could be any life at depths greater than 550 meters and didn't see much need to explore (the deep sea.However,this changed in 1862 when life was discovered as far down as 945 meters below sea level with the help of a digging machine.Ten years later,around 4,700 species (unknown before from the ocean floor were discovered. Since then,high technology has been developed to help explore the deep sea,including satellites.But why is deep-sea exploration still so difficult?Well,at greater depths it is freezing (极冷的)，everything is completely dark,and the pressure can be over 1,OO0 times greater than that on the surface. Though we have the difficulties,it's important that we understand the seas.They help control the earth's temperature and produce half of the oxygen (O2)in the air.They can also provide us with information about climate change.Our future depends on learning more about our oceans,and it is possible for us to really understand what is ongoing below the surface. ()1.Why are some numbers listed in Paragraph 1? A.To introduce how important oceans are. B.To discuss why sea animals have yet to be found out C.To explain that oceans cover a large area of the earth. D.To show that we have only a little understanding of oceans. ()2.What does the underlined word "They"in the last paragraph refer to? 106=