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Unit 4 The Wonders of Nature 单元测试题 2025-2026学年
下学期初中英语人教版（2024）八年级下册
一、单项选择
1．The team of ________ spent three months exploring the unknown forest to study rare plants.
A．drivers B．researchers C．farmers D．workers
2．The water level of the lake is 30 meters ________ sea level, making it a unique wetland.
A．on B．below C．over D．above
3．We need to ________ immediate action to protect the coral reefs from pollution.
A．take B．make C．do D．get
4．The weather in the mountain area is highly ________—clear in the morning but rainy in the afternoon.
A．comfortableB．changeable C．pleasant D．stable
5．—________ I borrow your guidebook about natural wonders?
—Sure, but please return it next week.
A．Must B．Should C．Could D．Need
6．The Great Barrier Reef is one of the most amazing ________ of nature in the world.
A．signs B．rules C．wonders D．plans
7．Learning about natural science ________ patience and careful observation.
A．includes B．requires C．marks D．causes
8．You won’t ________ in the Dead Sea because of its high salt content.
A．sink B．swim C．float D．walk
9．The old tree has ________ for over 500 years and become a local natural treasure.
A．existed B．appeared C．grown D．survived
10．—Why do people risk climbing high mountains?
—Because human ________ about exploration never stops.
A．curiosity B．ambition C．courage D．wisdom
11．—Air pollution is becoming increasingly serious.
—So it is. So we must ________ to control it before it gets worse.
A．take measuresB．take turns C．take notes D．take risks
12．—The driver ________ the deadly car accident because he put on his seatbelt before he started driving.
—That’s why wearing seatbelts is so important.
A．avoided B．survived C．noticed D．prevented
13．—People all over the world can know what is happening at once ________ the Internet.
—Yes, it makes the world seem much smaller.
A．in need of B．in control of C．by means of D．in case of
14．—The hero said he didn’t think too much before ________ the freezing river to save that child.
—It’s unbelievable. The water was so cold, but he didn’t hesitate (犹豫) at all.
A．drinking upB．diving into C．hiding from D．climbing over
15．The Chinese idiom “A Frog in a Well” tells us________.
A．how safe the well is B．why does the frog prefer the well
C．how stupid is the frog D．what happens with little experience
二、完形填空
Huangguoshu Waterfall is one of China’s most famous natural attractions. Located on the Baishui River in Guizhou Province, it is 101 meters in width and 77.8 metres in 16 . What makes it special is that it forms a “water curtain cave” behind the falling water, 17 visitors to walk through and experience the power of the waterfall up close.
The name “Huangguoshu” comes from a local plant called the yellow fruit tree, which grows 18 in the area. As early as the Ming Dynasty, the famous traveller Xu Xiake 19 this waterfall in his travels, praising its beauty as “shadows floating in the air, coldness falling like the Milky Way”.
Today, Huangguoshu Waterfall is part of a national park that 20 18 waterfalls of different sizes. It has also been featured in many films and TV shows, including the classic Journey to the West. Every year, thousands of tourists from home and abroad come to 21 its greatness.
To protect this natural wonder, the park has made strict rules: no littering, no feeding wild animals, and no flying drones without 22 . Visitors are encouraged to take public transport to reduce environmental impact.
Standing in front of the waterfall, you can feel the mist on your face and hear the 23 sound of water. It’s a reminder of how amazing nature is and why we should always 24 it. For anyone who loves natural beauty, a trip to Huangguoshu Waterfall is an 25 experience.
16．A．depth B．height C．length D．size
17．A．allowing B．stopping C．forcing D．advising
18．A．hardly B．widely C．rarely D．specially
19．A．described B．drew C．discovered D．measured
20．A．includes B．protects C．creates D．connects
21．A．check B．admire C．study D．explore
22．A．notice B．permission C．guidance D．invitation
23．A．gentle B．distant C．deafening D．soft
24．A．respect B．change C．visit D．watch
25．A．unforgettableB．uncomfortable C．unimportant D．uninteresting
三、阅读理解
Daocheng Yading, known as “the last Shangri-La on earth”, lies in the heart of Sichuan Province. Its breathtaking scenery includes snow-capped mountains, crystal-clear lakes, and vast grasslands. Every year, thousands of travellers are attracted to this natural wonder.
To manage visitor numbers better, tickets must be purchased online in advance. Online sales start on the first day of each month for the following month’s visits. The tourist season runs from April 15th to November 30th, with daily opening hours from 7:00 a.m. to 6:00 p.m. The last entry is at 4:40 p.m. Ticket prices are ￥150 for adults, ￥80 for students, and free for children under 1.2 metres.
Safety rules are strictly enforced in the scenic area. Camping is only allowed in designated areas. Feeding or disturbing wild animals is forbidden. Those who want to fly drones must get special permission beforehand. Popular activities include hiking to Milk Lake and Five-colour Lake, visiting Chonggu Temple, and taking photos at Luorong Cattle Farm.
26．When can people book tickets for Daocheng Yading online?
A．On the last day of each month. B．On the first day of each month.
C．One week before the visit. D．On the day of the visit.
27．How much should a couple with a 1.1-metre-tall child pay for the tickets?
A．￥150 B．￥300 C．￥380 D．￥450
28．What is NOT allowed in Daocheng Yading?
A．Hiking to Five-colour Lake. B．Camping in designated areas.
C．Feeding wild animals. D．Taking photos at Luorong Cattle Farm.
29．What time is the last entry to Daocheng Yading during the tourist season?
A．4:40 p.m. B．6:00 p.m. C．7:00 a.m. D．10:00 a.m.
30．What is the main purpose of this passage?
A．To introduce the history of Daocheng Yading.
B．To share travel experiences in Daocheng Yading.
C．To provide travel information about Daocheng Yading.
D．To describe the natural scenery of Daocheng Yading.
The Dead Sea, located between Israel and Jordan, is not a real sea but a salt lake. It is one of the most unique natural wonders on Earth. With a salt content much higher than that of ordinary seas, it allows people to float easily on its surface—you can even read a book while floating!
The Dead Sea is about 430 metres below sea level, making it the lowest point on Earth’s land surface. Rivers flow into it, but there is no outlet for water to flow out. Over time, the water evaporates, leaving behind large amounts of salt and minerals. This is why the lake is so salty.
However, the Dead Sea is facing a serious problem. Due to human activities, people take too much water from the rivers that feed it. As a result, the water level of the Dead Sea is dropping year by year, and its area is getting smaller. If this continues, the Dead Sea may dry up within the next 100 years.
Despite its name, the Dead Sea is not completely lifeless. Some special bacteria and algae can survive in its extremely salty water. The surrounding area is also home to unique plants and animals that have adapted to the harsh environment.
31．Why can people float easily on the Dead Sea?
A．Because it is very deep. B．Because its water is very clear.
C．Because its salt content is very high. D．Because it is a large lake.
32．What is the Dead Sea’s position on Earth?
A．It is the highest lake on Earth. B．It is the lowest point on Earth’s land surface.
C．It is the largest salt lake on Earth. D．It is the deepest lake on Earth.
33．What problem is the Dead Sea facing?
A．Its salt content is decreasing. B．Its water level is rising.
C．Its area is getting smaller. D．It is being polluted by humans.
34．Which of the following can survive in the Dead Sea?
A．Fish and shrimp. B．Bacteria and algae.
C．Dolphins and whales. D．Trees and flowers.
35．What is the main idea of this passage?
A．To explain why the Dead Sea is so salty.
B．To introduce the Dead Sea and its current situation.
C．To describe the plants and animals in the Dead Sea.
D．To suggest ways to protect the Dead Sea.
Do you want to look for wonderful natural places to visit during your holidays? Let’s take a look!
Mingsha MountainIt lies in Dunhuang City, Gansu Province. The place is famous for its special shape and the sound of the wind. When the wind blows over the sand dunes, visitors can hear the loud sound in the mountains.
Cost: 110 yuan for adults, 55 yuan for students and seniors aged 60 and above
Telephone: 0937-8883388
Longtan Grand Canyon (大峡谷)
It lies in Luoyang City, Henan Province. It is famous for its colourful plants, high cliffs and lots of special stones. Besides these, it also has convenient transportation.
Cost: 80 yuan for adults, free for children under 1.4 metres and seniors aged 60 and above
Telephone: 0379-67134226
The Hukou WaterfallsThis beautiful place belongs to Shanxi and??Shaanxi together. The Hukou Waterfalls is the largest waterfall on the Yellow River and the second largest waterfall in China. It shows the natural beauty, rich history and culture of the Yellow River.
Cost: 100 yuan for adults, 50 yuan for students and seniors aged 60 and above
Telephone: 0357-7955000
Yandang Mountain
Yandang Mountain lies in Wenzhou City, Zhejiang Province. It is known as “a famous mountain on the sea”. It has rich natural resources. Its special scenery gives poets and painters creative ideas.
Cost: 50 yuan for Lingfeng Scenic Area
50 yuan for Lingyan Scenic Area
50 yuan for Dalongqiu Scenic Area
40 yuan for Fangdong Scenic Area
20 yuan for Sanzhepu Scenic Area
Half-price for students and seniors aged 60 and above
Telephone: 0577-62178888
根据材料内容选择最佳答案。
36．What is Mingsha Mountain famous for?
A．Its rich natural resources. B．The sound of the wind.
C．Lots of special stones. D．The largest waterfall.
37．How much should 15-year-old Ma Wenjing and her classmate pay if they want to visit the Hukou Waterfalls?
A．100 yuan. B．110 yuan. C．160 yuan. D．200 yuan.
38．Which natural wonder has a separate ticket price for its different parts?
A．Mingsha Mountain. B．Longtan Grand Canyon.
C．The Hukou Waterfalls. D．Yandang Mountain.
39．What is the main purpose of this text?
A．To tell the history of four famous Chinese mountains.
B．To describe the weather patterns near these natural places.
C．To provide basic tourist information about four natural attractions.
D．To compare the costs of travelling in different seasons.
40．Where can we probably read the text?
A．In a travel guide. B．In a picture book.
C．In a fashion magazine. D．In a health report.
四、任务型阅读
Fraser Island is in Queensland, Australia, about 300 kilometres north of Brisbane. It is about 120 kilometres long and 25 kilometres wide. It is completely made of sand. 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 here.
The sand makes unusual shapes. There are hills made of sand. Nothing grows on them. They move one or two metres a year from the southeast towards the northwest of the island, getting bigger and bigger. At other places on the island, such as Rainbow Gorge, the Cathedrals and Red Canyon, the sandy rocks have different colours. Sometimes the rocks are so brown that they turn the sea brown, like coffee.
Surprisingly, the sand island has a lot of different plants and animals. There are over a hundred lakes. There are many kinds of birds. There are many other animals there too, such as flying foxes (大狐蝠) and wild dogs.
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 (毁坏) plants and scare animals. Their suncream (防晒霜) makes the water dirty. So it is necessary for the government to manage the visitors. For example, people must not damage plants or scare animals while camping or hiking in the forests, they must not use motor boats or go fishing in the lakes, and they need government papers to drive there.
41．What can we know about Fraser Island from the text?
A．No one can get there by plane. B．Few people know about it.
C．There are no living things on it. D．It is a beautiful sand island.
42．What does the underlined word “them” in Paragraph 2 refer to?
A．The sand hills. B．The small lakes.
C．The brown seas. D．The long beaches.
43．What does the writer advise in order to protect Fraser Island?
A．People should plant more trees and beautiful flowers on the sand hills.
B．No visitors should go deep into the forests for camping and hiking.
C．The government should take action to stop visitors damaging nature.
D．The number of visitors to the island should be under 500,000 per year.
44．What is the text mainly about?
A．The life on Fraser Island. B．The nature on Fraser Island.
C．The history of Fraser Island. D．The culture of Fraser Island.
[拓展设问]
45．What can we do to protect Fraser Island? (不超过 15 词)
五、短文填空
阅读下面短文，根据括号内所给汉语注释写出单词的正确形式(每空一词)。
There are many amazing natural sights on earth. Among them, the Great Blue Hole is one that always 46 (使感到意外) people. It is a famous natural 47 (奇观) in the Caribbean Sea. From a plane, it looks like a 48 (巨大) dark blue eye in the sea. But the real magic lies below the water’s 49 (表面).
This circular (圆形的) hole’s 50 (深度) reaches deeper than a 40-storey (楼层) building! For years, scientists have come to do 51 (研究) here. They found that an 52 (古老) underwater cave that fell down thousands of years ago formed it.
What makes it 53 (不寻常)? At the 54 (底部), there are rare (稀少的) stones and fish that live in the dark, cold water. People who dive there say the clear water lets them see far and 55 (允许) them to enter a quiet, secret world.
六、单词拼写
56．The Amazon River is the ________ (long) river in South America.
57．Look! Those ________ (mountain) are covered with snow all year round.
58．It’s ________ (amaze) to see so many beautiful flowers in the valley.
59．My sister is interested in ________ (nature) science and she wants to be a scientist.
60．The guide told us that the cave was 200 meters ________ (deep).
七、书面表达
61．围绕你最喜欢的山川或者河流景点，以“My favourite mountain/river”为标题写一篇不少于80词的英文短文。
内容提示：
1. What is your favourite mountain/river?
2. List at least two reasons why you like it.
3. How do you feel about it?
________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
参考答案
题号
1
2
3
4
5
6
7
8
9
10
答案
B
B
A
B
C
C
B
A
A
A
题号
11
12
13
14
15
16
17
18
19
20
答案
A
B
C
B
D
B
A
B
A
A
题号
21
22
23
24
25
26
27
28
29
30
答案
B
B
C
A
A
B
B
C
A
C
题号
31
32
33
34
35
36
37
38
39
40
答案
C
B
C
B
B
B
A
D
C
A
1．B
【详解】句意：一群研究人员花了三个月时间探索未知的森林以研究稀有植物。
drivers司机；researchers研究人员；farmers农民；workers工人。根据“to study rare plants”可知，目的是研究稀有植物，推测出这是一群研究人员，应填researchers。
2．B
【详解】句意：这个湖的水位低于海平面30米，使其成为一片独特的湿地。
on表示在……表面，over表示在……正上方，above表示在……上方，均不符合语境。??below sea level是固定搭配，意为低于海平面；
3．A
【详解】句意：我们需要立即采取行动保护珊瑚礁免受污染。
take采取；make制作；do做；get得到。固定短语take action 意为“采取行动”，符合语境。
4．B
【详解】句意：山区的天气非常多变——早上晴朗但下午下雨。
comfortable舒适的；changeable易变的；pleasant令人愉快的；stable稳定的。根据“clear in the morning but rainy in the afternoon”可知，天气变化无常，符合changeable的含义。
5．C
【详解】句意：——我可以借一下你那本关于自然奇观的指南书吗？——当然可以，但请下周归还。
Must必须；Should应该；Could可以；Need需要。根据答语“Sure”可知，此处是委婉地向对方请求许可，需用Could。
6．C
【详解】句意：大堡礁是世界上最惊人的大自然奇观之一。
signs迹象；rules规则；wonders奇观；plans计划。根据“The Great Barrier Reef”及“of nature”可知，大堡礁是举世闻名的自然景观。形容宏伟壮丽的自然景观常使用固定表达wonders of nature“大自然奇观”，符合语境逻辑。应填wonders。
7．B
【详解】句意：学习自然科学需要耐心和仔细的观察。
includes包括；requires需要；marks标记；causes导致。根据“Learning about natural science…patience and careful observation.”可知，学习自然科学这一过程“需要”具备耐心和仔细观察的品质作为条件。应填requires。
8．A
【详解】句意：由于死海的高盐分含量，你在里面不会下沉。
sink下沉；swim游泳；float漂浮；walk走路。根据“because of its high salt content”可知，死海盐度高，浮力大，人不会下沉。应填sink。
9．A
【详解】句意：这棵古树已经存在了500多年，成为了当地的自然宝藏。
existed存在；appeared出现；grown生长；survived幸存。根据时间状语“for over 500 years”可知，此处需用延续性动词，appear是瞬间动词，不能与时间段连用；结合语境强调古树历经多年依然“存在”，exist最符合题意。
10．A
【详解】句意：——人们为什么冒险攀登高山？——因为人类对探索的好奇心从未停止。
curiosity好奇心；ambition雄心；courage勇气；wisdom智慧。根据“about exploration”可知，驱动人类不断探索未知的内在动力是好奇心，虽然攀登需要勇气，但此处强调的是探索的原因。
11．A
【详解】句意：——空气污染正变得越来越严重。——确实如此。所以我们必须采取措施来控制它，以免情况恶化。
考查动词短语辨析。take measures采取措施；take turns轮流；take notes做笔记；take risks冒险。根据“to control it before it gets worse”可知，此处指采取措施来控制它，以免情况恶化。故选A。
12．B
【详解】句意：——司机在那场致命的车祸中幸存下来，因为他在开车前系好了安全带。——这就是为什么系安全带如此重要。
考查动词辨析。avoided避免；survived幸存；noticed注意到；prevented防止。根据“The driver...the deadly car accident”可知，司机在致命车祸中“幸存”，且后文强调系安全带的重要性，说明司机在事故中活了下来。故选B。
13．C
【详解】句意：全世界的人们都能通过互联网立刻知道发生了什么。
考查介词短语。in need of需要；in control of控制；by means of通过……方式；in case of以防。根据“what is happening at once...the Internet.”可知，能“通过”互联网立刻知道发生了什么，故选C。
14．B
【详解】句意：——这位英雄说，在跳入冰冷的河里去救那个孩子之前，他没有想太多。——真不可思议。水那么冷，但他毫不犹豫。
考查动词短语。drinking up喝光；diving into跳入；hiding from躲避；climbing over爬过。根据“the freezing river to save that child”以及“The water was so cold”可知，为了救孩子，英雄是“跳入”冰冷的河中，B项符合。故选B。
15．D
【详解】句意：中国成语“井底之蛙”告诉我们经验少会发生什么。
how safe the well is井有多安全；why does the frog prefer the well为什么青蛙喜欢这口井；how stupid is the frog青蛙有多蠢；what happens with little experience经验少会发生什么。空格处作动词tells的宾语从句，需用陈述语序，可先排除疑问语序的B、C两项。根据成语“井底之蛙”比喻见识短浅的人可知，该成语告诉我们的是缺乏经验或见识会怎样，应填what happens with little experience。故选D。
16．B 17．A 18．B 19．A 20．A 21．B 22．B 23．C 24．A 25．A
【导语】本文介绍了中国著名自然景观黄果树瀑布的地理特征、名称由来、历史记载、景区现状及保护措施，展现了它的壮美与生态意义。
16．句意：黄果树瀑布位于贵州白水河，宽101米，高77.8米。根据描述瀑布的尺寸，应选用height（高度），符合自然景观的参数表达。
17．句意：它的特别之处在于落水后形成“水帘洞”，允许游客穿行近距离感受瀑布力量。根据语境表示“允许、使能够”，应选用allowing（允许），符合语义。
18．句意：“黄果树”之名源于当地一种叫黄果的植物，该植物在该地区广泛生长。根据名称来源的植物分布，应选用widely（广泛地），符合语义。
19．句意：早在明代，著名旅行家徐霞客在游历中描述了这处瀑布，赞美其美为“捣珠崩玉，飞沫反涌，如烟雾腾空，势甚雄厉”。根据历史人物对景观的文字记录，应选用described（描述），符合语境。
20．句意：如今黄果树瀑布是国家公园的一部分，该公园包含18个大小不一的瀑布。根据国家公园的组成，应选用includes（包含），符合语义。
21．句意：每年，成千上万国内外游客前来欣赏它的壮美。根据游客对自然景观的行为，应选用admire（欣赏、赞美），符合语境。
22．句意：为保护这一自然奇观，公园制定严格规定：禁止乱扔垃圾、投喂野生动物，未经许可不得放飞无人机。根据景区管理规定，应选用permission（许可），符合“without permission”（未经许可）的固定搭配。
23．句意：站在瀑布前，你能感受到水雾拂面，听到震耳欲聋的水声。根据瀑布水流的声音特点，应选用deafening（震耳欲聋的），符合语义。
24．句意：它提醒我们自然的神奇，也提醒我们为何应始终尊重它。根据对自然的态度，应选用respect（尊重），符合生态保护的主题。
25．句意：对于热爱自然之美的人来说，黄果树瀑布之旅是一次难忘的体验。根据景观的震撼与美好，应选用unforgettable（难忘的），符合语义。
26．B 27．B 28．C 29．A 30．C
【导语】本文介绍了四川稻城亚丁的迷人自然景观，同时给出了该景区的订票规则、票价、开放时间、游览安全要求和热门活动等实用旅行信息，为计划前往的游客提供出行参考。
26．第二段明确提到“Online sales start on the first day of each month for the following month’s visits.”，每月1号开始预售下个月的门票，直接得出答案。
27．第二段说明票价规则“Ticket prices are ￥150 for adults, ￥80 for students, and free for children under 1.2 metres.”，是成人150元每人，1.2米以下儿童免费。由此计算出一对夫妻（2个成人）总价为150×2=300元，1.1米的孩子免票，总费用为300元。
28．第三段明确规定“Feeding or disturbing wild animals is forbidden”，禁止投喂、惊扰野生动物，直接提取信息。
29．第二段直接说明“The last entry is at 4:40 p.m.”，最后入园时间是下午4:40，直接得出答案。
30．文章介绍了稻城亚丁的购票规则、票价、开放时间、安全须知等旅行相关信息，核心目的是给游客提供旅行参考信息。
31．C 32．B 33．C 34．B 35．B
【导语】本文介绍了死海的独特地理特征、高盐度成因、面临的水位下降问题，以及在极端环境下生存的特殊生物。
31．文中第1段提到“With a salt content much higher than that of ordinary seas, it allows people to float easily on its surface”，说明死海盐度极高是人们能漂浮的原因。
32．文中第2段提到“The Dead Sea is about 430 metres below sea level, making it the lowest point on Earth’s land surface”，说明死海是地球陆地表面的最低点。
33．文中第3段提到“As a result, the water level of the Dead Sea is dropping year by year, and its area is getting smaller”，说明死海正面临面积缩小的问题。
34．文中第4段提到“Some special bacteria and algae can survive in its extremely salty water”，说明细菌和藻类能在死海中生存。
35．文章整体介绍了死海的基本特征、面临的现状以及特殊生物，核心是介绍死海及其当前状况。
36．B 37．A 38．D 39．C 40．A
【导语】本文主要介绍了鸣沙山、龙潭大峡谷、壶口瀑布和雁荡山四处自然景点的基本信息，包括地理位置、特色、票价和联系方式。
36．第一处景点介绍中明确指出：“The place is famous for its special shape and the sound of the wind”，说明鸣沙山以风的声音而闻名。
37．壶口瀑布票价部分明确指出：“100 yuan for adults, 50 yuan for students”，马文静和她的同学都是15岁学生，每人50元，两人共100元。
38．雁荡山部分列出了五个景区各自的票价，说明该景点不同部分有单独的票价。
39．全文提供了四处自然景点的位置、特色、票价和电话等信息，属于旅游基本信息，因此主要目的是为读者提供这四处自然景点的旅游信息。
40．文章内容为景点介绍、票价、联系方式等，最可能出现在旅游指南中。
41．D 42．A 43．C 44．B 45．I will protect plants and animals while camping or hiking in the forests. (答案不唯一，言之有理即可)
【导语】本文介绍了澳大利亚弗雷泽岛的地理位置、地貌特征、动植物资源，同时指出了游客带来的环境问题，并提出政府应加强管理以保护这座岛屿。
41．第一段指出：“It is completely made of sand…it is the largest sand island in the world.”以及第四段提到“people visit the island every year to see the island’s beauty and nature”，证明它是一座美丽的沙岛。
42．第二段指出：“There are hills made of sand. Nothing grows on them.”，此处them指代前一句提到的the sand hills。
43．第四段指出：“Unluckily, the visitors create problems…So it is necessary for the government to manage the visitors.”，表明作者建议政府采取行动阻止游客破坏自然。
44．全文围绕弗雷泽岛的沙滩地貌、动植物、湖泊等自然景观以及保护问题展开，主要介绍该岛的自然状况。
45．本题是开放性试题，答案不唯一。结合文章和自己对“保护环境”的看法，合理作答即可。
46．surprises 47．wonder 48．huge 49．surface 50．depth 51．research 52．ancient 53．unusual 54．bottom 55．allows
【导语】本文介绍了地球自然奇观之一的大蓝洞，讲述了它的外观、深度、形成原因及独特之处。
46．句意：其中，大蓝洞是总能让人们感到意外的景观之一。主语“the Great Blue Hole”是单数，此处用一般现在时，“使感到意外”的动词是“surprise”，用其第三人称单数形式“surprises”。
47．句意：它是加勒比海著名的自然奇观。“自然奇观”对应的英文是“natural wonder”，此处用名词“wonder”。
48．句意：从飞机上看，它像海里一只巨大的深蓝色眼睛。此处修饰名词“eye”，用形容词“huge”表示“巨大的”。
49．句意：但真正的神奇之处在海面之下。“水面”对应的英文是“water’s surface”，此处用名词“surface”，。
50．句意：这个圆形洞穴的深度比一栋40层的建筑还要深！“……的深度”需用名词形式，“deep”的名词是“depth”。
51．句意：多年来，科学家们来这里做研究。“做研究”对应的固定表达是“do research”，此处直接用名词“research”。
52．句意：他们发现，数千年前一个古老的水下洞穴坍塌形成了它。此处修饰名词“cave”，用形容词“ancient”表示“古老的”。
53．句意：是什么让它不寻常呢？“不寻常的”对应的英文形容词是“unusual”，此处作宾语补足语。
54．句意：在底部，有稀有的石头和生活在黑暗冷水中的鱼。“在底部”对应的表达是“at the bottom”，此处用名词“bottom”。
55．句意：潜水的人说，清澈的水让他们看得很远，也允许他们进入一个安静、隐秘的世界。主语“the clear water”是单数，此处用一般现在时，“allow”用第三人称单数形式“allows”。
56．longest
【详解】句意：亚马逊河是南美洲最长的河流。根据“in South America”可知，此处表示最高级的含义，用最高级形式longest。故填longest。
57．mountains
【详解】句意：看！那些山终年都被雪覆盖着。指示代词Those是复数形式，后面必须接可数名词的复数形式。 mountain是可数名词，其复数形式为mountains。故填mountains。
58．amazing
【详解】句意：在山谷里看到这么多美丽的花，真是令人惊叹。is后需用形容词作表语，it是形式主语，真正主语是不定式“to see so many beautiful flowers”这件事，修饰事物需用amazing“令人惊奇的、神奇的”。故填amazing。
59．natural
【详解】句意：我妹妹对自然科学感兴趣，她想成为一名科学家。nature“自然”，名词，此处应用其形容词形式natural“自然的”，作定语修饰名词science。故填natural。
60．deep
【详解】句意：导游告诉我们这个洞穴有200米深。“200 meters”表示具体的深度，其后直接跟形容词原级，“deep”表示“深的”。故填deep。
61．例文：
My favourite river
My favourite river is the Yangtze River. It is the longest river in China and one of the most important rivers in the world.
I like the Yangtze River for several reasons. Firstly, it has a rich history and culture. Along the river, there are many ancient cities and historical sites, which tell the story of China’s long history. Secondly, the scenery along the Yangtze River is breathtaking. From the majestic Three Gorges to the vast plains, every part of it shows the beauty of nature.
When I think about the Yangtze River, I feel a deep sense of pride. It’s not only a river, but also a symbol of our nation’s spirit.
【详解】[总体分析]
①题材：本文是一篇话题作文，主题为介绍自己最喜欢的自然景观（山川或河流）。
②时态：以一般现在时为主，用于表达普遍事实与个人感受。
③提示：内容应包括河流（或山川）的名称、喜欢的原因（至少两点）以及个人情感，注意结构清晰、衔接自然。
[写作步骤]
第一步：开篇点题，介绍你最喜欢的河流或山川的名称及基本信息；
第二步：分条说明喜欢的理由（如自然风光、历史文化、个人体验等）；
第三步：结尾表达情感或总结升华主题，体现热爱与自豪。
[亮点词汇]
①think about 想到
②feel a deep sense of pride 感到深深的自豪
③not only...but also... 不但……而且……
[高分句型]
①Along the river, there are many ancient cities and historical sites, which tell the story of China’s long history.（非限制性定语从句）
②When I think about the Yangtze River, I feel a deep sense of pride.（时间状语从句）
③It’s not only a river, but also a symbol of our nation’s spirit.（not only…but also结构）

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