Unit 4 课时6 Section B（3a-3c）（分层作业）英语新教材人教版八年级下册

Unit 4 The Wonders of Nature 课时6 Section A (3a-3c) 分层作业 核心知识速记 03拓展培优 01基础达标 04思维进阶 02能力提升 ( 词汇 reef /riːf/ n. 礁；礁脉 underwater /ˌʌndəˈwɔːtə(r)/ adj. 水下的；用于水下的 adv. 在水下 northeastern /ˌnɔːθˈiːstən/ adj. 东北的；东北方向的 coast /kəʊst/ n. 海岸；海滨 coral /ˈkɒrəl/ n. 珊瑚；珊瑚虫 include /ɪnˈkluːd/ v. 包含；包括 sand /sænd/ n. 沙子 alive /əˈlaɪv/ adj. 活着；在世；有活力 structure /ˈstrʌktʃə(r)/ n. 结构（体）；构造；体系 turtle /ˈtɜːtl/ n. 海龟；龟 lifetime /ˈlaɪftaɪm/ n. 一生；终身 句型 1. Located on the northeastern coast of Australia, the Great Barrier Reef is one of the most amazing places to visit. 大堡礁位于澳大利亚东北海岸，是最令人惊叹的游览胜地之一。 2 . Here, you can swim or dive in the clear water and see coral, plants, and colourful fish. 在这里，你可以在清澈的水中游泳或潜水，观赏珊瑚、植物和色彩斑斓的鱼类。 3 . If you dive deeper, you might even see large fish, turtles, and sharks. 如果你潜得更深，你甚至可能看到大型鱼类、海龟和鲨鱼。 5. For people who love the ocean, visiting the Great Barrier Reef is the dream of a lifetime! 对于热爱海洋的人来说，游览大堡礁是一生的梦想！ ) 一、单词默写。 1. _______ /riːf/ n. 礁；礁脉 2. ________ /ˌʌndəˈwɔːtə(r)/ adj. 水下的 3. __________ /ˌnɔːθˈiːstən/ adj. 东北的 4. __________ /ɪnˈkluːd/ v. 包含；包括 5. __________ /əˈlaɪv/ adj. 活着；在世 6. __________ /ˈstrʌktʃə(r)/ n. 结构（体） 【答案】reef; underwater; northeastern; include; alive; structure 二、词组默写。 1. 沙滩 _______________________ 2. 生命结构 _______________________ 3. 五颜六色的鱼 _______________________ 4. the dream of a lifetime _______________________ 5. underwater world _______________________ 【答案】1. sand beaches 2. living structure 3. colorful fish 4. 一生的梦想 5. 水下世界 三、根据要求完成句子 1. 如果你潜水更深，你可能会看到大鱼、海龟和鲨鱼。 If you dive ________, you might see large fish, turtles, and ________. 2. 你可以在这清澈的海水中游泳、潜水或浮潜。 You can swim, dive, or snorkel in the ________ ________. 3. 大堡礁位于澳大利亚东北海岸。 The Great Barrier Reef is ________ on the northeastern ________ of Australia. 4. 海南岛的清澈海域有美丽的珊瑚礁。 Hainan Island has beautiful ________ ________ in its clear waters. 5. 他第一个越过终点线，他毕生的梦想实现了。 He was the first to cross the ________ ________, and his ________ ________ came true. 【答案】1. deeper; sharks 2. clear seawater 3. located; coast 4. coral reefs 5. finishing line; lifelong dream 四 、用括号内单词的正确形式填空。 1. It includes over 900 islands and white sand ________ (beach). 2. The price of the tour ________ (include) accommodation and meals. 3. The beautiful scenery ________ (attract) many tourists every year. 4. We learned about different ________ (type) of animals in science class. 5. We don’t know whether he’s ________ (live) or dead. 【答案】1. beaches 2. includes 3. attracts 4. types 5. alive 五、阅读短文，从方框中选择适当的词并用其正确的形式填空（每词限用一次）。 wonder  nature  like  because  be  feel  protect  beautiful  they  way Nature never fails to surprise us with its amazing 1 . Among all the natural wonders, I admire coastal cliffs the most. They stand firmly by the sea, facing the wind and waves year after year. I first saw coastal cliffs during a family trip to Qingdao. When I stood on the top of the cliff, I looked down and saw the blue sea crashing against the rocks. The view was so 2 that I couldn’t say a word. I 3 small and humble in front of such grandeur. I 4 coastal cliffs very much 5 they show the power and perseverance of 6 . They have been shaped by wind and water over millions of years, yet they remain strong. This teaches me to be brave when facing difficulties in life. My uncle is a photographer. He often takes photos of wetlands and glaciers. He says 7 are important for maintaining ecological balance. He also tells me that many natural wonders are in danger due to pollution and over-development. We must take action to 8 them. Exploring natural wonders is a great 9 to connect with nature. It makes us appreciate the beauty of the world and encourages us to be responsible protectors. Let’s cherish every gift from nature and pass them on to future generations. 【答案】1．wonders 2．beautiful 3．felt 4．like 5．because 6．nature 7．they 8．protect 9．way 【导语】本文主要讲述了作者对海岸悬崖这一自然奇观的喜爱和感悟，并呼吁人们保护自然环境。 1．句意：大自然总是以其惊人的奇观让我们惊叹不已。根据备选词汇和“Nature never fails to surprise us with its amazing...”可知，此处指大自然的奇观。名词wonder“奇观”符合语境，此处表示泛指，应用复数形式。故填wonders。 2．句意：景色如此美丽，我竟说不出一句话来。根据“The view was so...”可知，空格处缺少形容词作表语，结合备选词汇，形容词beautiful“美丽的”符合语境。故填beautiful。 3．句意：面对如此宏伟的景象，我感到自己渺小而卑微。根据“I...small and humble”可知，空格处缺少系动词构成系表结构。结合备选词汇，系动词feel“感觉”符合语境，此处描述过去发生的动作，应用一般过去时，所以空格处应填feel的过去式felt。故填felt。 4．句意：我非常喜欢海岸悬崖，因为它们展现了自然的力量和坚韧。like...very much表示“非常喜欢”，是常用的固定搭配，此处表示当前的情况，应用一般现在时，主语“I”需与动词原形连用。故填like。 5．句意：我非常喜欢海岸悬崖，因为它们展现了自然的力量和坚韧。根据“I...coastal cliffs very much...they show the power and perseverance”可知，空格前后是因果关系，后句说明了喜欢海岸悬崖的原因，应用because引导原因状语从句。故填because。 6．句意：我非常喜欢海岸悬崖，因为它们展现了自然的力量和坚韧。根据“they show the power and perseverance of”和备选词汇可知，此处表示海岸悬崖展现了自然的力量和坚韧。名词nature“自然”符合语境。故填nature。 7．句意：他说，它们对于维持生态平衡至关重要。空格处缺少代词指代上文提到的“wetlands and glaciers”，在从句中作主语，代词they“它们”符合语境。故填they。 8．句意：我们必须采取行动来保护它们。根据“We must take action to...them.”和备选词汇可知，此处表示采取行动保护自然奇观。动词protect“保护”符合语境，空前的“to”是动词不定式符号，其后接动词原形。故填protect。 9．句意：探索自然奇观是与大自然连接的绝佳方式。a great way to do sth.意为“做某事的绝佳方式”，此处表示是亲近大自然的绝佳方式。故填way。 六、完形填空。 A team of Chinese scientists have found a new giant sinkhole (天坑). It’s 192 metres 1 . What did they find at the 2 ? An ancient forest! This 3 discovery was found in Leye County, in Guangxi Zhuang Autonomous Region. Leye County is known as “the museum of sinkholes”. People have found about 30 sinkholes there so far. How do sinkholes form? China has a karst landscape (喀斯特地貌), Veni told Live Science. Karst landscapes are made when rainwater runs through little cracks (裂缝) in the 4 . The cracks slowly grow into tunnels (隧道) and then big caves (洞穴). Over time, a cave can get too big. Its ceiling then falls slowly, opening up huge sinkholes. Veni called China’s sinkholes “spectacular (壮观的)” because of 5 great sizes. 6 are sinkholes important? Besides looking cool, karst caves and sinkholes can be 7 to all kinds of plants, animals and microbe life (微生物). The newly discovered one has ancient trees up to 40 metres tall. “I wouldn’t be surprised to know that some species (物种) in these caves have never been reported (被报道) or described by science until now,” said the leader of exploration team, Chen Lixin. This is 8 the sinkholes are separate from the outside world. That 9 an environment to new species to form. Sinkholes also have deep stores of underground water. They’re like nature’s water pipes (管道). They bring 10 to 700 million people worldwide, Veni told Live Science. 1．A．tall B．long C．thin D．deep 2．A．end B．top C．bottom D．start 3．A．terrible B．amazing C．careful D．early 4．A．floor B．tree C．ground D．sky 5．A．his B．your C．our D．their 6．A．Why B．When C．Where D．What 7．A．office B．home C．house D．zoo 8．A．because B．but C．whether D．after 9．A．hurts B．offers C．protects D．helps 10．A．rain B．snow C．water D．food 【答案】1．D 2．C 3．B 4．C 5．D 6．A 7．B 8．A 9．B 10．C 【导语】本文介绍了中国科学家在广西乐业县发现的一个巨型天坑，以及天坑的形成原因和重要意义。 1．句意：它有192米深。 tall高的；long长的；thin瘦的；deep深的。根据常识，天坑的深度通常用“深”来描述，且后文提到“An ancient forest!”在天坑底部被发现，也能佐证这是深度描述。故选D。 2．句意：他们在底部发现了什么？一片远古森林！ end结尾；top顶部；bottom底部；start开始。根据“An ancient forest!”和天坑的结构，远古森林应位于天坑的底部。故选C。 3．句意：这个惊人的发现是在广西壮族自治区的乐业县发现的。terrible可怕的；amazing惊人的；careful小心的；early早的。根据“An ancient forest!”可知，在天坑底部发现远古森林是一个令人惊叹的发现。故选B。 4．句意：喀斯特地貌是当雨水流过地面上的小裂缝时形成的。 floor地板；tree树；ground地面；sky天空。根据“Karst landscapes are made when rainwater runs through little cracks...”可知，雨水流过的裂缝位于地面。故选C。 5．句意：Veni称中国的天坑为“壮观的”，因为它们的巨大尺寸。 his他的；your你的；our我们的；their它们的。分析句子可知，此处指代前文的“China’s sinkholes”，是复数，所以用形容词性物主代词their。故选D。 6．句意：为什么天坑很重要？ Why为什么；When何时；Where哪里；What什么。根据下文“Besides looking cool, karst caves and sinkholes can be...to all kinds of plants...”可知，本段是在解释天坑重要的原因，所以用Why提问。故选A。 7．句意：除了看起来很酷，喀斯特洞穴和天坑可以是各种植物、动物和微生物的家园。 office办公室；home家园；house房子；zoo动物园。根据“to all kinds of plants, animals and microbe life”可知，天坑为生物提供了生存环境，是它们的家园。故选B。 8．句意：这是因为天坑与外界是隔绝的。 because因为；but但是；whether是否；after在……之后。根据前文“some species in these caves have never been reported or described by science until now”可知，这一现象的原因是天坑与外界隔绝。故选A。 9．句意：这为新物种的形成提供了环境。 hurts伤害；offers提供；protects保护；helps帮助。根据“an environment to new species to form”可知，天坑为新物种的形成提供了环境。故选B。 10．句意：它们为全球7亿人带来水。 rain雨；snow雪；water水；food食物。根据前文“Sinkholes also have deep stores of underground water. They’re like nature’s water pipes.”可知，天坑储存地下水，为人类提供水。故选C。 七、阅读理解。 Covering about 14 million square kilometers, Antarctica (南极洲) is the Earth’s fifth-largest continent (洲), nearly double the size of Australia. Antarctica is the coldest, driest, and windiest continent on the Earth. It is at the South Pole (南极) and is almost completely covered in ice. The ice holds about 70% of the world’s fresh water. The temperature in Antarctica can drop to -89.2℃, which is the lowest temperature ever recorded. Despite (尽管) the hard conditions, Antarctica is home to many animals, such as penguins, seals and whales. Since the International Geophysical Year (1957-1958), Antarctica has changed into a science laboratory (实验室). Many countries, including China, have research stations there. Scientists study the ice, weather, and animals to learn more about our planet. In 1959, 12 countries signed the Antarctic Treaty (《南极条约》), which protects the continent and allows only peaceful activities like science and exploration. China entered the Antarctic Treaty in 1983. China is a key treaty member. Its first station, Great Wall Station (1985) , marked China’s formal entry into Antarctic exploration. Zhongshan Station (1989), Kunlun Station (2009), and Taishan Station (2014) support year-round studies. Climate change increases Antarctica’s global importance. The West Antarctic Ice Sheet (冰盖) alone holds enough ice to raise sea levels by 3 meters if it disappeared. As the Earth’s climate changes, Antarctica’s ice is disappearing. This could cause sea levels to rise and affect people everywhere. That’s why studying Antarctica is so important for our future. 1．In which part of a magazine could we read the passage? A．Story Time. B．History World. C．Sports News. D．Amazing Nature. 2．When did China enter the Antarctic Treaty? A．In 1959. B．In 1983. C．In 1985. D．In 2009. 3．Why is studying Antarctica important for our future according to the passage? A．To protect animals. B．To find new animals. C．To understand climate change. D．To build more research stations. 4．What can we know about Antarctica according to the passage? A．It’s home to many animals. B．It’s the hottest continent on the Earth. C．It has one quarter of the world’s fresh water. D．It has an area of about 3 times the size of Australia. 5．Which would be the best title for the passage? A．Useful animals of Antarctica B．The importance of Antarctica C．The history of the Antarctic Treaty D．How to visit great Antarctica 【答案】【导语】本文是一篇科普说明文，介绍了南极洲的地理特征、科研价值以及气候变化对它的影响，强调了研究南极洲的重要性。 1．推理判断题。根据“The temperature in Antarctica can drop to -89.2℃, which is the lowest temperature ever recorded. Despite (尽管) the hard conditions, Antarctica is home to many animals, such as penguins, seals and whales.”，“Many countries, including China, have research stations there. Scientists study the ice, weather, and animals to learn more about our planet.”可知，文章围绕南极洲的自然环境、生态与科研价值展开，属于自然科普类内容，因此最可能出现在杂志的“Amazing Nature”板块。故选D。 2．细节理解题。根据文章“China entered the Antarctic Treaty in 1983.”可知，中国是在1983年加入《南极条约》的。故选B。 3．细节理解题。根据文章“As the Earth’s climate changes, Antarctica’s ice is disappearing. This could cause sea levels to rise and affect people everywhere. That’s why studying Antarctica is so important for our future”可知，研究南极洲对未来重要是因为其与气候变化密切相关，能帮助人类了解气候变化带来的影响。故选C。 4．细节理解题。根据文章“Despite the hard conditions, Antarctica is home to many animals, such as penguins, seals and whales”可知，南极洲是许多动物的栖息地。故选A。 5．最佳标题题。根据“Covering about 14 million square kilometers, Antarctica (南极洲) is the Earth’s fifth-largest continent (洲), nearly double the size of Australia. ”，“Since the International Geophysical Year (1957-1958), Antarctica has changed into a science laboratory (实验室). ”，“Climate change increases Antarctica’s global importance. The West Antarctic Ice Sheet (冰盖) alone holds enough ice to raise sea levels by 3 meters if it disappeared.”可知，文章先介绍南极洲的基本情况，再阐述其科研价值、《南极条约》相关内容及气候变化背景下南极洲的重要性，核心围绕南极洲的重要性展开。故选B。 八、书面表达。 请根据下面表格中的信息，以The Niagara Falls为题写一篇100词左右的短文。 Where northeast of North America Description two parts: Horseshoe Falls: the larger part is in Canada, 56 metres in height, 675 metres in width; American Falls: the smaller part is in America, over 50 metres in height, more than 300 metres in width Evaluation one of the greatest wonders in the world, source of hydroelectric (水力发电的) power The Niagara Falls ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 【答案】The Niagara Falls Located in the northeast of North America, the Niagara Falls is one of the most amazing natural wonders in the world. It consists of two main parts: the larger Horseshoe Falls on the Canadian side, which is about 56 metres high and 675 metres wide, and the smaller American Falls in the United States, with a height of over 50 metres and a width of more than 300 metres. Every year, millions of visitors come to see the breathtaking view and powerful flow of the falls. The Niagara Falls is not only a beautiful sight but also an important source of hydroelectric power. It is truly a magnificent gift from nature. 【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，考生应注意不要遗漏“信息提示”中的介绍要点，适当添加细节，并突出写作重点。 [写作步骤] 第一步，介绍Niagara瀑布位置； 第二步，分述两个瀑布的细节； 第三步，总结评价。 [亮点词汇] ①consist of由……组成 ②millions of数百万 ③not only...but also...不仅……而且…… [高分句型] ①It consists of two main parts: the larger Horseshoe Falls on the Canadian side, which is about 56 metres high and 675 metres wide, and the smaller American Falls in the United States, with a height of over 50 metres and a width of more than 300 metres. (which引导的定语从句) ②The Niagara Falls is not only a beautiful sight but also an important source of hydroelectric power.(not only...but also...句型) ( 1 / 7 ) 学科网（北京）股份有限公司 $ Unit 4 The Wonders of Nature 课时6 Section A (3a-3c) 分层作业 核心知识速记 03拓展培优 01基础达标 04思维进阶 02能力提升 ( 词汇 reef /riːf/ n. 礁；礁脉 underwater /ˌʌndəˈwɔːtə(r)/ adj. 水下的；用于水下的 adv. 在水下 northeastern /ˌnɔːθˈiːstən/ adj. 东北的；东北方向的 coast /kəʊst/ n. 海岸；海滨 coral /ˈkɒrəl/ n. 珊瑚；珊瑚虫 include /ɪnˈkluːd/ v. 包含；包括 sand /sænd/ n. 沙子 alive /əˈlaɪv/ adj. 活着；在世；有活力 structure /ˈstrʌktʃə(r)/ n. 结构（体）；构造；体系 turtle /ˈtɜːtl/ n. 海龟；龟 lifetime /ˈlaɪftaɪm/ n. 一生；终身 句型 1. Located on the northeastern coast of Australia, the Great Barrier Reef is one of the most amazing places to visit. 大堡礁位于澳大利亚东北海岸，是最令人惊叹的游览胜地之一。 2 . Here, you can swim or dive in the clear water and see coral, plants, and colourful fish. 在这里，你可以在清澈的水中游泳或潜水，观赏珊瑚、植物和色彩斑斓的鱼类。 3 . If you dive deeper, you might even see large fish, turtles, and sharks. 如果你潜得更深，你甚至可能看到大型鱼类、海龟和鲨鱼。 5. For people who love the ocean, visiting the Great Barrier Reef is the dream of a lifetime! 对于热爱海洋的人来说，游览大堡礁是一生的梦想！ ) 一、单词默写。 1. _______ /riːf/ n. 礁；礁脉 2. ________ /ˌʌndəˈwɔːtə(r)/ adj. 水下的 3. __________ /ˌnɔːθˈiːstən/ adj. 东北的 4. __________ /ɪnˈkluːd/ v. 包含；包括 5. __________ /əˈlaɪv/ adj. 活着；在世 6. __________ /ˈstrʌktʃə(r)/ n. 结构（体） 二、词组默写。 1. 沙滩 _______________________ 2. 生命结构 _______________________ 3. 五颜六色的鱼 _______________________ 4. the dream of a lifetime _______________________ 5. underwater world _______________________ 三、根据要求完成句子 1. 如果你潜水更深，你可能会看到大鱼、海龟和鲨鱼。 If you dive ________, you might see large fish, turtles, and ________. 2. 你可以在这清澈的海水中游泳、潜水或浮潜。 You can swim, dive, or snorkel in the ________ ________. 3. 大堡礁位于澳大利亚东北海岸。 The Great Barrier Reef is ________ on the northeastern ________ of Australia. 4. 海南岛的清澈海域有美丽的珊瑚礁。 Hainan Island has beautiful ________ ________ in its clear waters. 5. 他第一个越过终点线，他毕生的梦想实现了。 He was the first to cross the ________ ________, and his ________ ________ came true. 四 、用括号内单词的正确形式填空。 1. It includes over 900 islands and white sand ________ (beach). 2. The price of the tour ________ (include) accommodation and meals. 3. The beautiful scenery ________ (attract) many tourists every year. 4. We learned about different ________ (type) of animals in science class. 5. We don’t know whether he’s ________ (live) or dead. 五、阅读短文，从方框中选择适当的词并用其正确的形式填空（每词限用一次）。 wonder  nature  like  because  be  feel  protect  beautiful  they  way Nature never fails to surprise us with its amazing 1 . Among all the natural wonders, I admire coastal cliffs the most. They stand firmly by the sea, facing the wind and waves year after year. I first saw coastal cliffs during a family trip to Qingdao. When I stood on the top of the cliff, I looked down and saw the blue sea crashing against the rocks. The view was so 2 that I couldn’t say a word. I 3 small and humble in front of such grandeur. I 4 coastal cliffs very much 5 they show the power and perseverance of 6 . They have been shaped by wind and water over millions of years, yet they remain strong. This teaches me to be brave when facing difficulties in life. My uncle is a photographer. He often takes photos of wetlands and glaciers. He says 7 are important for maintaining ecological balance. He also tells me that many natural wonders are in danger due to pollution and over-development. We must take action to 8 them. Exploring natural wonders is a great 9 to connect with nature. It makes us appreciate the beauty of the world and encourages us to be responsible protectors. Let’s cherish every gift from nature and pass them on to future generations. 六、完形填空。 A team of Chinese scientists have found a new giant sinkhole (天坑). It’s 192 metres 1 . What did they find at the 2 ? An ancient forest! This 3 discovery was found in Leye County, in Guangxi Zhuang Autonomous Region. Leye County is known as “the museum of sinkholes”. People have found about 30 sinkholes there so far. How do sinkholes form? China has a karst landscape (喀斯特地貌), Veni told Live Science. Karst landscapes are made when rainwater runs through little cracks (裂缝) in the 4 . The cracks slowly grow into tunnels (隧道) and then big caves (洞穴). Over time, a cave can get too big. Its ceiling then falls slowly, opening up huge sinkholes. Veni called China’s sinkholes “spectacular (壮观的)” because of 5 great sizes. 6 are sinkholes important? Besides looking cool, karst caves and sinkholes can be 7 to all kinds of plants, animals and microbe life (微生物). The newly discovered one has ancient trees up to 40 metres tall. “I wouldn’t be surprised to know that some species (物种) in these caves have never been reported (被报道) or described by science until now,” said the leader of exploration team, Chen Lixin. This is 8 the sinkholes are separate from the outside world. That 9 an environment to new species to form. Sinkholes also have deep stores of underground water. They’re like nature’s water pipes (管道). They bring 10 to 700 million people worldwide, Veni told Live Science. 1．A．tall B．long C．thin D．deep 2．A．end B．top C．bottom D．start 3．A．terrible B．amazing C．careful D．early 4．A．floor B．tree C．ground D．sky 5．A．his B．your C．our D．their 6．A．Why B．When C．Where D．What 7．A．office B．home C．house D．zoo 8．A．because B．but C．whether D．after 9．A．hurts B．offers C．protects D．helps 10．A．rain B．snow C．water D．food 七、阅读理解。 Covering about 14 million square kilometers, Antarctica (南极洲) is the Earth’s fifth-largest continent (洲), nearly double the size of Australia. Antarctica is the coldest, driest, and windiest continent on the Earth. It is at the South Pole (南极) and is almost completely covered in ice. The ice holds about 70% of the world’s fresh water. The temperature in Antarctica can drop to -89.2℃, which is the lowest temperature ever recorded. Despite (尽管) the hard conditions, Antarctica is home to many animals, such as penguins, seals and whales. Since the International Geophysical Year (1957-1958), Antarctica has changed into a science laboratory (实验室). Many countries, including China, have research stations there. Scientists study the ice, weather, and animals to learn more about our planet. In 1959, 12 countries signed the Antarctic Treaty (《南极条约》), which protects the continent and allows only peaceful activities like science and exploration. China entered the Antarctic Treaty in 1983. China is a key treaty member. Its first station, Great Wall Station (1985) , marked China’s formal entry into Antarctic exploration. Zhongshan Station (1989), Kunlun Station (2009), and Taishan Station (2014) support year-round studies. Climate change increases Antarctica’s global importance. The West Antarctic Ice Sheet (冰盖) alone holds enough ice to raise sea levels by 3 meters if it disappeared. As the Earth’s climate changes, Antarctica’s ice is disappearing. This could cause sea levels to rise and affect people everywhere. That’s why studying Antarctica is so important for our future. 1．In which part of a magazine could we read the passage? A．Story Time. B．History World. C．Sports News. D．Amazing Nature. 2．When did China enter the Antarctic Treaty? A．In 1959. B．In 1983. C．In 1985. D．In 2009. 3．Why is studying Antarctica important for our future according to the passage? A．To protect animals. B．To find new animals. C．To understand climate change. D．To build more research stations. 4．What can we know about Antarctica according to the passage? A．It’s home to many animals. B．It’s the hottest continent on the Earth. C．It has one quarter of the world’s fresh water. D．It has an area of about 3 times the size of Australia. 5．Which would be the best title for the passage? A．Useful animals of Antarctica B．The importance of Antarctica C．The history of the Antarctic Treaty D．How to visit great Antarctica 八、书面表达。 请根据下面表格中的信息，以The Niagara Falls为题写一篇100词左右的短文。 Where northeast of North America Description two parts: Horseshoe Falls: the larger part is in Canada, 56 metres in height, 675 metres in width; American Falls: the smaller part is in America, over 50 metres in height, more than 300 metres in width Evaluation one of the greatest wonders in the world, source of hydroelectric (水力发电的) power The Niagara Falls ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ ( 1 / 7 ) 学科网（北京）股份有限公司 $ Unit 4 The Wonders of Nature 课时6 Section A (3a-3c) 分层作业 一、单词默写。 reef; underwater; northeastern; include; alive; structure 二、词组默写。 1. sand beaches 2. living structure 3. colorful fish 4. 一生的梦想 5. 水下世界 三、根据要求完成句子 1. deeper; sharks 2. clear seawater 3. located; coast 4. coral reefs 5. finishing line; lifelong dream 四 、用括号内单词的正确形式填空。 1. beaches 2. includes 3. attracts 4. types 5. alive 五、阅读短文，从方框中选择适当的词并用其正确的形式填空（每词限用一次）。 1．wonders 2．beautiful 3．felt 4．like 5．because 6．nature 7．they 8．protect 9．way 六、完形填空。 1．D 2．C 3．B 4．C 5．D 6．A 7．B 8．A 9．B 10．C 七、阅读理解。 1．D 2．B 3．C 4．A 5．B 八、书面表达。 The Niagara Falls Located in the northeast of North America, the Niagara Falls is one of the most amazing natural wonders in the world. It consists of two main parts: the larger Horseshoe Falls on the Canadian side, which is about 56 metres high and 675 metres wide, and the smaller American Falls in the United States, with a height of over 50 metres and a width of more than 300 metres. Every year, millions of visitors come to see the breathtaking view and powerful flow of the falls. The Niagara Falls is not only a beautiful sight but also an important source of hydroelectric power. It is truly a magnificent gift from nature. ( 1 / 7 ) 学科网（北京）股份有限公司 $