Unit4完形、阅读同步练 2025-2026学年人教版八年级英语下册

**基本信息** 以自然奇观与人文主题为载体，融合语法词汇与语篇理解，系统训练八年级下册Unit4核心语言能力与思维品质。 **专项设计** |模块|题量/典例|题型特征|知识逻辑| |----|-----------|----------|----------| |完形填空|4篇35题|语境驱动型选择，考查比较级、被动语态等语法及词义辨析|围绕死海、亚马逊雨林等自然主题，构建"现象描述-问题分析-保护行动"逻辑链，渗透环保意识| |阅读理解|3部分14题|含细节理解、词义猜测、主旨大意题|从自然奇观（撒哈拉之眼）到人文话题（成长、中国成就、湿地保护），培养信息提取与跨文化理解能力，体现语言能力与文化意识的融合|

英语八年级下册Unit4完形、阅读同步练（人教版） 一、完形填空题：阅读短文，结合上下文从各题所给的A、B、C、D四个选项中选出一个最佳答案 第一篇： The Dead Sea is a famous natural wonder. It lies in the Middle East. It is 1 than most lakes on Earth. Its salt content is very high, so people won’t sink when they swim. Lots of visitors come here every year. However, the Dead Sea is becoming 2 now. It is losing water day by day. Dry weather and human activities make the problem 3 . Scientists advise people to save water. We must protect such great wonders 4 they will disappear one day. Nothing can take the place of natural beauty, so let’s take action 5 . 1．A．deep B．deeper C．deepest 2．A．smaller B．bigger C．cleaner 3．A．easier B．worse C．safer 4．A．or B．so C．but 5．A．quietly B．slowly C．quickly 第二篇： The Wonders of the Amazon Rainforest The Amazon Rainforest is one of the greatest natural wonders on Earth. Covering over 5.5 million square kilometers, it is the largest rainforest in the world. It is home to more than 40,000 plant species, 3,000 fish species, and countless birds and animals, making it one of the most biodiverse places on the planet. The rainforest plays a crucial role in regulating the Earth’s climate. It absorbs large amounts of carbon dioxide and 6 oxygen, which is essential for all living things. The trees also help to control rainfall by releasing water vapor into the atmosphere, creating a unique microclimate within the forest. What makes the Amazon even more amazing is its 7 origins. It is believed to have existed for over 55 million years, and its landscape has been 8 by millions of years of natural processes. Rivers have carved deep valleys, while wind and rain have shaped the mountains and hills surrounding the forest. However, the Amazon Rainforest is facing serious threats. Deforestation, caused by logging and agricultural activities, is destroying large areas of the forest every year. This not only 9 the homes of countless species but also disrupts the global ecosystem. Climate change is another major threat, as rising temperatures and changing rainfall patterns are affecting the survival of many plants and animals. Despite these challenges, there is still hope. Many countries and organizations are working together to protect the Amazon. They are establishing protected areas, promoting sustainable development, and educating people about the 10 of this natural wonder. By working together, we can ensure that the Amazon Rainforest continues to thrive for generations to come. 6．A．produces B．reduces C．wastes D．stores 7．A．recent B．ancient C．modern D．temporary 8．A．destroyed B．built C．shaped D．covered 9．A．protects B．provides C．invents D．destroys 10．A．value B．cost C．price D．danger 第三篇： Last month, our school organized a trip to Green Mountain National Park to learn about natural wonders. All students 11 to join in this exciting activity. On the way, our teacher 12 us about the park’s history. She said it was home to many 13 plants and animals, and there was a famous cave hidden in the mountain. When we arrived, we 14 a guide who took us around the park. First, we visited the cave. It was dark inside, 15 we used flashlights to see the beautiful rock shapes. The guide told us these rocks 16 over millions of years. Then, we walked to a lake at the foot of the mountain. The water was so 17 that we could see the fish swimming clearly. In the afternoon, we had a talk about protecting natural wonders. We learned that some of them are in danger because of pollution. We decided to 18 a poster to tell more people to care for nature. Before leaving, we 19 some rubbish we found around the lake. This trip taught me that natural wonders are precious. We should 20 them for future generations. 11．A．invited B．were invited C．invite D．inviting 12．A．told B．spoke C．said D．talked 13．A．rare B．common C．ugly D．fast 14．A．met B．made C．became D．got 15．A．but B．so C．or D．because 16．A．form B．formed C．are formed D．were formed 17．A．dirty B．clear C．warm D．cold 18．A．put up B．give up C．make up D．set up 19．A．picked up B．looked up C．turned up D．took up 20．A．harm B．destroy C．protect D．ignore 第四篇： What is life like in the desert? You may think there is only sand in the deserts of the world, 21 it is not true. While deserts are dry, they are full of surprises. In the desert, as we know, there is only a little 22 , and it is not enough for most plants. Still we can see some plants, like cacti and small bushes, manage to 23 in the desert. There is 24 and plants in some places in the desert. We call these places oases (绿洲). Oases are like green 25 in the middle of the desert, where trees grow, and people build villages and towns. People 26 all kinds of vegetables and plants in the fields there. People can’t live outside the oases because the desert is too 27 . They have camels (骆驼), sheep and other animals. These animals 28 the desert plants to survive and do not need much water. The animals are 29 to the desert people in many ways. They eat the meat and drink the milk of the animals. They use the camels for carrying water, food, 30 and something else. Camels are called the “ships of the desert” because they can 31 long distances without water. Since food and water are far from enough, the desert people have to keep moving from place to place. They must 32 look for grass or desert plants for their animals. When there is no more food for their animals, they 33 their things and move to another area where plants grow. Life in the desert is hard, but the desert people are 34 . Everyone in the desert is glad to help people in need and give them food and water. This strong sense of 35 helps them survive in one of the hardest living environments on earth. 21．A．and B．but C．though D．because 22．A．rain B．sunshine C．wind D．snow 23．A．fly B．stand C．hide D．survive 24．A．earth B．sand C．death D．water 25．A．leaves B．boats C．islands D．shoulders 26．A．sell B．research C．dig D．grow 27．A．wet B．dry C．large D．small 28．A．depend on B．get into C．shout at D．suffer from 29．A．harmful B．new C．similar D．useful 30．A．matches B．tents C．prizes D．risks 31．A．jump B．climb C．attract D．travel 32．A．always B．never C．quickly D．clearly 33．A．change B．pack C．buy D．leave 34．A．friendly B．serious C．careful D．shy 35．A．achievement B．direction C．community D．humour 二、阅读理解题：仔细阅读短文，根据短文内容选择最佳答案 第一部分： （1）Growing up is a beautiful journey. We learn new knowledge, make new friends and understand the world better. We may meet difficulties, but they help us become stronger and more confident. We should learn to be independent, take care of ourselves and solve problems on our own. We should also be kind to others and love our family. Growing up healthily is the best gift for ourselves. 36．What does the writer think of growing up? A．It’s boring. B．It’s a beautiful journey. C．It’s full of trouble. D．It’s tiring. 37．What can difficulties help us do? A．Become sad. B．Become stronger. C．Give up easily. D．Stay alone. 38．What should we learn to be while growing up? A．Independent. B．Lazy. C．Noisy. D．Impolite. （2）China is amazing! It has many great achievements. High-speed trains run very fast. They make travelling easier. Shenzhou spacecraft and Fuxing trains show China’s rapid progress. People around the world are surprised at China’s development. 39．What makes travelling easier? A．Slow buses. B．High-speed trains. C．Old planes. D．Long walks. 40．What shows China’s progress? A．Old houses. B．Dirty roads. C．Shenzhou spacecraft. D．Small shops. 41．How do people feel about China’s development? A．Bored. B．Surprised. C．Tired. D．Sad. 第二部分： The Eye of the Sahara is one of Earth’s most amazing natural wonders. It’s a special place in the desert (沙漠) of Mauritania, Africa. Looking from the sky, it looks like a huge, bright eye! It is as long as 500 football fields. The Eye looks like a big round pizza with different coloured parts. How was it made? Millions of years ago, the ground under the sand started to rise up. Then, wind and rain slowly wore away the soft rocks (岩石), leaving the hard ones behind. Over time, these hard rocks formed the beautiful circles we see today. From above, you can count about 10 round circles, each one has a different colour. The biggest circle is on the outside, with smaller ones inside. But the Eye of the Sahara is in trouble. The desert is very dry, and sandstorms often blow over it. The sand can make the rocks difficult to see. Also, not many people know about this amazing place because it’s far from big cities. What can we do to help? Scientists are studying the Eye to find ways to conserve the rocks from sand. Some people also suggest building a small road or a simple visitor centre nearby. This way, more kids and tourists can come and see the Eye of the Sahara. 42．What can we learn about the circles of the Eye from Paragraph 2? A．They are all the same size. B．The smallest circle is in the centre. C．Each circle has the same colour. D．There are about 8 round circles. 43．Why can’t many people visit the Eye of the Sahara easily? A．Because it’s too small to find. B．Because it’s far from cities. C．Because it’s always full of water. D．Because it’s too hot to get there. 44．What does the underlined word “conserve” in Paragraph 4 mean? A．Climb. B．Hike. C．Develop. D．Protect. 45．What is the main purpose of the passage? A．To talk about dangerous sandstorms. B．To tell how to build a visitor centre. C．To compare different deserts in Africa. D．To describe a natural wonder and its challenges. 第三部分： China has many wetlands (湿地) and some of them have become the world’s important wetlands. The Chinese Yellow Sea Wetlands are among them. They are in Yancheng, Jiangsu Province. They are home for many different kinds of animals. The world’s largest Milu Deer Nature Reserve (自然保护区) is in them. More than 700 Milu deer live freely there. There are not many red-crowned cranes (鹤) in the world, but every winter you can see some in the Red-crowned Crane Nature Reserve in the Yellow Sea Wetlands. The temperature in the wetlands is usually neither too high nor too low. There is a lot of rain and sunshine, too. They are really good places for wildlife. Offering food and home for some special kinds of animals is not the only reason why we need to protect wetlands. Wetlands are important because they also prevent floods. But some people want to change the wetlands to make more space for farms and less space for wildlife. Luckily, more and more people are beginning to realize the importance of wetlands and wildlife. Every year, on February 2nd, many activities are held to tell people more about wetlands. 46．Usually the weather in the wetlands is ________. A．hot B．pleasant C．cold D．dry 47．The phrase “prevent floods” in the passage probably means ________. A．cause floods easily B．stop floods from happening C．make floods more serious D．learn about flood conditions 48．Some people want to change the ________ to make more space for farms A．lands B．world C．wildlife D．wetlands 49．We must protect wetlands because ________. A．they are home for wildlife B．they can offer food to animals C．they can prevent floods D．all of the above 50．The best title for the passage is ________. A．China’s Wetlands Have All Entered the World’s List B．Wetlands——Home for Wildlife and Human Beings C．Special Animals in The Chinese Yellow Sea Wetlands D．Wetlands——Valuable Resources (资源) on the Earth 英语八年级下册Unit4完形、阅读同步练（人教版） 参考答案 一、完形填空题： 第一篇： 1．B 2．A 3．B 4．A 5．C 【导语】本文介绍了位于中东的著名自然奇观死海，其盐度高，人游泳不会下沉，每年有很多游客。但现在死海正变小，因干燥天气和人类活动失水问题严重。科学家建议人们节约用水，呼吁大家保护像死海这样的自然奇观，因为自然之美无可替代。 1．句意：它比地球上大多数湖泊都更深‌。 句中有“than”，表示比较，要用形容词比较级。“deep”的比较级是“deeper”，表示“更深”，所以选B。 2．句意：然而，死海现在正变得越来越小‌。根据后文It is losing water day by day.（它每天都在流失水分）可知，死海的面积应该是变得更小了。smaller是small的比较级，意为“更小的”，所以选A。 3．句意：干燥的天气和人类活动使问题更加严重‌。Dry weather and human activities（干燥的天气和人类活动）会使死海流失水分这个问题变得更糟糕。worse是bad的比较级，意为“更糟糕的”，所以选B。 4．句意：我们必须保护这些伟大的奇观，否则总有一天它们会消失‌。We must protect such great wonders（我们必须保护这样伟大的奇观）和they will disappear one day（它们有朝一日会消失）之间是“否则”的关系，“or”有“否则”的意思，所以选A。 5．句意：没有什么可以取代自然之美，所以我们必须迅速采取行动‌。前文提到自然奇观可能会消失，所以这里应该是呼吁迅速采取行动。quickly意为“迅速地”，符合语境，所以选C。 第二篇： 6．A 7．B 8．C 9．D 10．A 【导语】本文介绍了亚马逊雨林作为地球自然奇观的重要性、其古老的形成过程、面临的威胁以及保护措施。 6．句意：它吸收大量的二氧化碳并产生氧气，这对所有生物都至关重要。 produces产生；reduces减少；wastes浪费；stores储存。根据absorbs large amounts of carbon dioxide and…oxygen和常识，植物光合作用吸收二氧化碳，“释放/产生”氧气。故选A。 7．句意：使亚马逊更令人惊叹的是其古老的起源。 recent最近的；ancient古老的；modern现代的；temporary临时的。根据It is believed to have existed for over 55 million years可知，亚马逊雨林存在了5500多万年，所以起源是“古老的”。故选B。 8．句意：人们相信，它已经存在了超过5500万年，其地貌已经被数百万年的自然过程所塑造。 destroyed摧毁；built建造；shaped塑造；covered覆盖。根据Rivers have carved deep valleys, while wind and rain have shaped the mountains and hills surrounding the forest.可知，自然过程 (风雨侵蚀等) “塑造”了其地貌。故选C。 9．句意：这不仅破坏了无数物种的家园，还扰乱了全球生态系统。 protects保护；provides提供；invents发明；destroys破坏。根据Deforestation…is destroying large areas of the forest和not only…the homes of countless species可知，森林砍伐“破坏”了物种的家园。故选D。 10．句意：他们正在建立保护区，促进可持续发展，并教育人们了解这一自然奇观的价值。 value价值；cost成本；price价格；danger危险。根据They are establishing protected areas, promoting sustainable development可知，教育人们认识雨林的“价值”有助于保护它。故选A。 第三篇： 11．B 12．A 13．A 14．A 15．B 16．D 17．B 18．A 19．A 20．C 【导语】本文讲述了一次学校组织的自然公园旅行，学生们参观了洞穴和湖泊，学习了自然奇观知识，并决定采取行动保护自然。 11．句意：所有学生都被邀请参加这次令人兴奋的活动。 invited邀请，过去式/过去分词；were invited被邀请，一般过去时被动；invite邀请，动词原形；inviting邀请，动名词/现在分词。根据All students...to join in this exciting activity.可知，所有学生都“被邀请”参加这次令人兴奋的活动。主语All students和invite是被动关系；根据前文Last month可知，此处使用一般过去时的被动was/were+V-ed；主语All students是复数，所以使用were，invite的过去分词是invited。故选B。 12．句意：在路上，我们的老师告诉了我们关于这个公园的历史。 told告诉；spoke说；said说；talked谈论。tell (过去式told) sb. about sth.是固定搭配，意为“告诉某人关于某事”。故选A。 13．句意：她说这里是许多稀有动植物的家，山里还藏着一个著名的洞穴。 rare稀有的；common常见的；ugly丑陋的；fast快的。根据it was home to many...plants and animals可知，它是许多“稀有的”动植物的家。故选A。 14．句意：当我们到达时，我们遇到了一位带领我们游览公园的导游。 met遇见；made构成；became变成；got得到。根据When we arrived, we...a guide who took us around the park.可知，当我们到达时，我们“遇见了”一位带领我们游览公园的导游。故选A。 15．句意：里面很暗，所以我们用手电筒来看那些漂亮的岩石形状。 but但是；so所以；or或者；because因为。根据It was dark inside,...we used flashlights to see the beautiful rock shapes.可知，因为里面很黑，“所以”使用手电筒照明。故选B。 16．句意：导游告诉我们这些岩石是经过数百万年形成的。 form形成，动词原形；formed形成，过去式/过去分词；are formed被形成，一般现在时被动；were formed被形成，一般过去时被动。根据The guide told us these rocks...over millions of years.可知，导游告诉我们这些岩石是经过数百万年“形成”的。主语these rocks和form是被动关系；根据前文“told”可知，此处使用一般过去时的被动was/were+V-ed；主语these rocks是复数，所以使用were，form的过去分词是formed。故选D。 17．句意：湖水是如此的清澈，以至于我们能清楚地看到鱼在游动。 dirty脏的；clear清澈的；warm温暖的；cold寒冷的。根据The water was so...that we could see the fish swimming clearly.可知，湖水是如此的“清澈”，以至于我们能清楚地看到鱼在游动。故选B。 18．句意：我们决定张贴一张海报，告诉更多人关爱自然。 put up张贴；give up放弃；make up编造；set up建立。根据We decided to...a poster to tell more people to care for nature.可知，我们决定“张贴”一张海报，告诉更多人关爱自然。故选A。 19．句意：离开前，我们捡起了在湖边发现的一些垃圾。 picked up捡起；looked up查阅；turned up出现；took up开始从事。根据Before leaving, we...some rubbish we found around the lake.可知，离开前，我们“捡起了”在湖边发现的一些垃圾。故选A。 20．句意：我们应该为后代保护它们。 harm伤害；destroy破坏；protect保护；ignore忽视。根据We should...them for future generations.可知，我们应该为后代“保护”它们。故选C。 第四篇： 21．B 22．A 23．D 24．D 25．C 26．D 27．B 28．A 29．D 30．B 31．D 32．A 33．B 34．A 35．C 【导语】本文是一篇记叙文。文章主要介绍了沙漠中的生活，包括沙漠中的植物、动物、绿洲以及沙漠居民的生活方式。尽管沙漠环境恶劣，但沙漠居民依然乐观友好，乐于助人，这种强烈的社区意识帮助他们在这个地球上最艰难的生活环境之一中生存下来。 21．句意：你可能会认为世界上的沙漠里只有沙子，但这并不是真的。 and和；but但是；though尽管；because因为。根据前后句意可知，此处存在转折关系，故应用but连接。故选B。 22．句意：在沙漠里，我们知道，雨水很少，对大多数植物来说是不够的。 rain雨；sunshine阳光；wind风；snow雪。根据常识可知，沙漠里雨水很少。故选A。 23．句意：我们仍然可以看到一些植物，如仙人掌和小灌木，在沙漠中生存。 fly飞；stand站；hide隐藏；survive生存。根据Still we can see some plants, like cacti and small bushes可知，此处指仙人掌和小灌木在沙漠中生存。故选D。 24．句意：沙漠中的一些地方有水和植物。 earth地球；sand沙子；death死亡；water水。根据下文We call these places oases (绿洲).可知，绿洲是有水和植物的地方。故选D。 25．句意：绿洲就像沙漠中的绿色岛屿，树木生长，人们在那里建造村庄和城镇。 leaves叶子；boats船；islands岛屿；shoulders肩膀。根据in the middle of the desert可知，此处指沙漠中的绿色岛屿。故选C。 26．句意：人们在那里种植各种蔬菜和植物。 sell卖；research研究；dig挖；grow种植。根据all kinds of vegetables and plants in the fields there可知，此处指种植蔬菜和植物。故选D。 27．句意：人们不能住在绿洲以外的地方，因为沙漠太干燥了。 wet潮湿的；dry干燥的；large大的；small小的。根据People can’t live outside the oases可知，沙漠太干燥，所以人们不能住在绿洲以外的地方。故选B。 28．句意：这些动物依靠沙漠植物生存，不需要太多的水。 depend on依靠；get into进入；shout at对……大喊大叫；suffer from遭受。根据the desert plants to survive可知，此处指动物依靠沙漠植物生存。故选A。 29．句意：这些动物在许多方面对沙漠居民很有用。 harmful有害的；new新的；similar相似的；useful有用的。根据下文They eat the meat and drink the milk of the animals.可知，动物对沙漠居民很有用。故选D。 30．句意：他们用骆驼运水、食物、帐篷和其他东西。 matches火柴；tents帐篷；prizes奖品；risks风险。根据They use the camels for carrying water, food, ... and something else.可知，此处指用骆驼运水、食物、帐篷和其他东西。故选B。 31．句意：骆驼被称为“沙漠之舟”，因为它们可以在没有水的情况下长途旅行。 jump跳；climb爬；attract吸引；travel旅行。根据long distances without water可知，此处指长途旅行。故选D。 32．句意：他们必须总是为他们的动物寻找草或沙漠植物。 always总是；never从不；quickly快速地；clearly清晰地。根据Since food and water are far from enough, the desert people have to keep moving from place to place.可知，食物和水远远不够，所以沙漠居民必须总是为他们的动物寻找草或沙漠植物。故选A。 33．句意：当他们的动物没有食物时，他们收拾东西，搬到另一个植物生长的地方。 change改变；pack打包；buy买；leave离开。根据move to another area where plants grow可知，此处指收拾东西搬到另一个地方。故选B。 34．句意：沙漠里的生活很艰苦，但沙漠里的人很友好。 friendly友好的；serious严肃的；careful小心的；shy害羞的。根据下文Everyone in the desert is glad to help people in need and give them food and water.可知，沙漠里的人很友好。故选A。 35．句意：这种强烈的社区意识帮助他们在地球上最艰难的生活环境之一中生存下来。 achievement成就；direction方向；community社区；humour幽默。根据Everyone in the desert is glad to help people in need and give them food and water.可知，沙漠居民之间互相帮助，这是一种强烈的社区意识。故选C。 二、阅读理解题： 第一部分： （1）36．B 37．B 38．A 【导语】本文阐述了成长是一段美好的旅程，会学到知识、结交朋友，困难能让人更强，同时强调成长中要学会独立、友善。 36．文中第一句提到Growing up is a beautiful journey，可知作者认为成长是一段美好的旅程。 37．文中提到We may meet difficulties, but they help us become stronger and more confident，可知困难能帮助我们变得更强。 38．文中提到We should learn to be independent, take care of ourselves and solve problems on our own，可知成长中要学会独立。 （2）39．B 40．C 41．B 【导语】本文是一篇说明文，介绍了中国令人惊叹的诸多伟大成就，如高铁让出行更便捷，神舟飞船和复兴号列车展现中国快速发展，世界人民对中国发展感到惊讶。 39．文章明确提到High-speed trains run very fast. They make travelling easier，说明高铁让旅行变得更容易。 40．文中指出Shenzhou spacecraft and Fuxing trains show China’s rapid progress，表明神舟飞船和复兴号列车展现中国快速进步。 41．文章最后一句People around the world are surprised at China’s development.说明世界人民对中国的发展感到惊讶。 第二部分： 42．B 43．B 44．D 45．D 【导语】本文主要介绍了撒哈拉之眼这一地球上令人惊叹的自然奇观，包括其外观、形成原因、面临的困境以及人们为保护它所采取的措施等。 42．细节理解题。根据From above, you can count about 10 round circles, each one has a different colour. The biggest circle is on the outside, with smaller ones inside.可知，从上面看，大约有10个圆圈，最大的圆圈在外面，里面是较小的圆圈，也就是最小的圆圈在中心。故选B。 43．细节理解题。根据Also, not many people know about this amazing place because it’s far from big cities.可知，很多人不能轻易参观撒哈拉之眼是因为它远离城市。故选B。 44．词句猜测题。根据The sand can make the rocks difficult to see. Also, not many people know about this amazing place because it’s far from big cities.可知，撒哈拉之眼面临沙尘等威胁，岩石难以看清，所以科学家研究它是为了找到保护岩石免受沙子侵害的方法，由此可推测“conserve”意思是“保护”。故选D。 45．主旨大意题。文章先介绍了撒哈拉之眼这一自然奇观的样子、形成原因，接着提到它面临的困境，最后说人们为保护它所采取的措施，所以文章主要目的是描述一个自然奇观及其面临的挑战。故选D。 第三部分： 46．B 47．B 48．D 49．D 50．D 【导语】本文主要以中国江苏盐城的黄海湿地为例，介绍了湿地的基本情况，说明了湿地是野生动物的家园、具有防洪等重要价值，同时呼吁人们保护湿地。 46．原文第二段明确说明湿地温度适中且雨水和阳光充足The temperature in the wetlands is usually neither too high nor too low. There is a lot of rain and sunshine, too，此句说明气候宜人，B选项pleasant“宜人的”符合语境。 47．第二段指出：Wetlands are important because they also prevent floods.结合语境可知湿地很重要，是因为它们可以阻止洪水发生，因此prevent floods意为“阻止洪水发生”。 48．第二段原句直接告知答案But some people want to change the wetlands to make more space for farms。 49．第二段给出了保护湿地的多重价值：Offering food and home for some special kinds of animals …对应了选项A“野生动物的家园”和选项B“为动物提供食物”，“Wetlands are important because they also prevent floods.”对应了选项C“防洪”，所以D选项“以上全部”为正确答案。 50．根据上文提到的湿地对于动物和人类的双重价值，体现了湿地是宝贵资源，从而响应了呼吁人们保护湿地的意义。D选项“湿地——地球上的宝贵资源”贴合文章表达的核心。 试卷第1页，共3页 学科网（北京）股份有限公司 $