Unit 4 Amazing Plants and Animals选词填空+短文填空专练（含答案解析）-2025-2026学年八年级英语上学期单元重难点专题提优训练（人教版2024）

中小学教育资源及组卷应用平台
2025-2026学年八年级英语上学期单元重难点专题提优训练（人教版）
Unit 4 Amazing Plants and Animals选词填空+短文填空专练
选词填空
（1）
阅读短文, 从方框中选择适当的词并用其正确形式填空, 使短文通顺、意思完整, 每词限用一次。
dance think weigh large beautiful hard change we place because
We are beautiful red-crowned cranes (鹤) from Yancheng. We have red caps on top of our heads. You may 1 the caps are our feathers. In fact, they are combs (冠). We are one of the 2 birds in size in the world. An adult red-crowned crane 3 up to 10 kilograms. We are good at 4 . I think we are the most beautiful dancers of all the birds. We are also good singers. We sing loudly and 5 . We are good at flying as well. We fly to warm East Asia when snow comes and spend the winter there. When spring comes, we return north to give birth to baby cranes there. We like to live together on wetlands in China and some other 6 .
We live on worms and small fish. We like to live in long grasses. Water and grasses are important for 7 . But sometimes, life is even 8 these years. We are one of the most endangered birds in the world now. People keep 9 our living areas into farms and buildings. We don’t have enough space to live in. And we don’t have enough food to feed our babies 10 people fish and hunt too much.
（2）
阅读短文，从方框中选择适当的词并用其正确形式填空，使短文通顺、意思完整，每词限用一次。
probable hunt in live lucky human get protect fact ourselves
Wild animals are our friends. Our world is beautiful and 11 because of them.
12 , the number of some wild animals is becoming smaller and smaller because of the loss of their living areas. Also, people 13 them for their fur and bones such as tigers. You will realize how much danger these tigers are facing if you watch the documentary Tiger Watch. The situation will continue unless 14 stop hunting them.
Now the government has realized the importance of 15 wild animals. They have made laws to protect them. Animal-lovers should contact (联系) the police if they see anything unusual. Many famous stars support people in protecting wild animals. Some help to film a documentary, which reminds people to protect wildlife. You 16 think some wild animals are dangerous to people. In 17 , they only attack people when they are 18 danger.
We should 19 along with wild animals. Protecting animals is to protect 20 .
（3）
阅读短文，从方框中选择适当的词并用其正确形式填空，使短文通顺、意思完整，每词限用一次。
communicate, ocean, which, long, tool, ton, fast, run, two, world
Do you know what the world’s fastest animal is How about the world’s smartest animal Do you know 21 animal lives the longest Let’s read about some of these amazing animals.
The 22 animal in the world is the cheetah. Cheetahs can run at about 120 kilometers an hour. When they are 23 at that speed (速度), they spend more time in the air than on the ground. Blue whales are the 24 largest animals. They are about 33 meters long, and they weigh around 170 25 . Blue whales eat about 3,600 kilograms of food every day. Of course, the smartest animal in the world is the human. The 26 smartest animal is the chimpanzee (黑猩猩). Chimps can make 27 and build things. They can also solve problems. Some chimps can even use their hands to make words and 28 . Other very smart animals include dolphins and parrots. Most people believe that tortoises live the longest in the world. It’s true that tortoises live 29 than other animals on land. In fact, some 30 animals live longer. Some koi, a kind of goldfish, can live for more than 200 years.
（3）
阅读短文，从方框中选择适当的词并用其正确形式填空，使短文通顺、意思完整，每词限用一次。
（4）
阅读短文，从方框中选择适当的词并用其正确形式填空，使短文通顺、意思完整，每词限用一次。
message sit when they protect however meter fall through famous
Sequoias (红杉) are the largest trees in the world. They can reach up to eight 31 in diameter (直径). The large sequoia in California is 32 for having a large hole at the bottom. The hole is big enough for cars. The tree is up to 2,000 years old. Until now, thousands of people travel to see it each year. 33 , on Sunday the large sequoia fell down during a storm. “But no one was hurt,” said a 34 on the internet.
Many visitors took pictures while standing or 35 under the famous sequoia. After hearing the news about the tree, some posted photos and messages on the Internet about 36 memories (记忆) .
The large sequoia 37 down! The storm was “just too much” for the tree.
“It’s like a family member in my heart,” Ms. Brown said. She said she was just 12 38 her parents first took her to see the tree. She’s now an old school teacher.
The hole in the sequoia weakened (削弱) the tree over time. People made the hole in the 1880s to let people and cars pass 39 . This began with horses and later with cars. In the last few years, to 40 the tree, only people could walk through the hole.
选词填空参考答案
（1）
1．think 2．largest 3．weighs 4．dancing 5．beautifully 6．places 7．us 8．harder 9．changing 10．because
【导语】本文以丹顶鹤的口吻，介绍了其外形、习性、栖息地及目前因人类活动而面临的生存困境。
1．句意：你可能认为这些冠是我们的羽毛。结合语境及备选词汇可知，此处是指“认为”；may后接动词原形，“think”意为“认为”，符合语境。故填think。
2．句意：我们是世界上体型最大的鸟类之一。“one of the + 形容词最高级 + 可数名词复数”表示“最……之一”，结合备选词汇“large”，其最高级为largest，符合语境。故填largest。
3．句意：一只成年丹顶鹤重达10公斤。结合“An adult red-crowned crane...up to 10kilograms.”可知，只成年丹顶鹤重达10公斤，再结合备选词汇“weigh”可知，此处描述客观事实，用一般现在时，主语是第三人称单数，谓语动词用三单形式weighs。故填weighs。
4．句意：我们擅长跳舞。“be good at doing sth.”表示“擅长做某事”，结合“I think we are the most beautiful dancers”及备选词汇“dance”，此处应用dancing。故填dancing。
5．句意：我们唱歌声音洪亮且动听。结合“We sing loudly and...”可知，唱歌声音洪亮且动听，再结合备选词汇“beautiful”，此处修饰动词sing，应用其副词形式beautifully。故填beautifully。
6．句意：我们喜欢一起生活在中国和其他一些地方的湿地。结合“We like to live together on wetlands in China and some other...”及备选词汇可知，此处指生活在中国和其他一些地方的湿地，place“地方”，some other后接可数名词复数，故填places。
7．句意：水和草对我们来说很重要。结合“Water and grasses are important for...”可知，水和草对我们来说很重要，再结合备选词汇“we”，for后接人称代词宾格us。故填us。
8．句意：但有时候，这些年生活甚至更艰难了。结合“But sometimes, life is even...these years. We are one of the most endangered birds in the world now.”和备选词汇可知，生活甚至更艰难了，艰难“hard”，even后接形容词比较级，hard的比较级是harder。故填harder。
9． 句意：人们一直把我们的生活区变成农场和建筑物。根据“We don’t have enough space to live in.”可知，人们一直把我们的生活区变成农场和建筑物，“keep doing sth.”表示“一直做某事”，结合备选词汇“change”，此处应用changing。故填changing。
10．句意：而且我们没有足够的食物喂养幼鹤，因为人们过度捕鱼和捕猎。结合“And we don’t have enough food to feed our babies...people fish and hunt too much.”可知，前后句是因果关系，备选词汇“because”符合语境。故填because。
（2）
11．lively 12．Unluckily 13．hunt 14．humans 15．protecting 16．probably 17．fact 18．in 19．get 20．ourselves
【导语】本文主要讨论了保护野生动物的重要性。
11．句意：我们的世界因为它们而美丽和充满活力。根据“Our world is beautiful and...because of them.”和备选词可知，此处用形容词作表语。live的形容词形式为lively，意为“充满活力的”，与beautiful并列。故填lively。
12．句意：不幸的是，一些野生动物的数量由于其生存区域的减少而变得越来越少。根据“the number of some wild animals is becoming smaller and smaller”和备选词可知，这是不幸的事，此处应用副词unluckily。位于句首，单词首字母大写。故填Unluckily。
13．句意：而且，人们会为了它们的皮毛和骨头猎杀它们，比如老虎。结合“for their fur and bones”及备选词可知，表示人们会为了它们的皮毛和骨头猎杀它们。hunt意为“打猎；猎取”，符合。结合语境可知，时态是一般现在时，主语为复数，谓语动词用原形。故填hunt。
14．句意：这种情况将会持续下去，除非人类停止猎杀它们。根据语境及备选词可知，此处指人类，human“人类”；根据“stop”可知，此处用复数形式humans。故填humans。
15．句意：现在，政府已经意识到保护野生动物的重要性了。根据“They have made laws to protect them.”及备选词可知，此处指已经意识到了保护野生动物的重要性；of是介词，后接动名词，protect“保护”，其动名词形式为protecting。故填protecting。
16．句意：你可能认为某些野生动物对人类有危险。根据“You...think some wild animals are dangerous to people.”及备选词可知，此处应该用副词，表示一种推测，表示你可能认为某些野生动物对人类有危险。probable的副词形式为probably，意为“可能”。故填probably。
17．句意：事实上，它们只在处于危险时攻击人。根据“In..., they only attack people when they are...anger.”及备选词可知，此处考查固定搭配：in fact“事实上”，固定搭配。故填fact。
18．句意：事实上，它们只在处于危险时攻击人。根据“they only attack people when they are...danger.”可知，此处考查固定搭配：in danger“处于危险中”。故填in。
19．句意：我们应该与野生动物友好相处。根据“We should...along with wild animals.”及备选词可知，此处表示要与野生动物友好相处。get along with为固定短语，意为“和……相处融洽”；should为情态动词，其后跟动词原形，故填get。
20．句意：保护动物就是保护我们自己。根据“Protecting animals is to protect...”及备选词可知，此处表示保护动物就是保护我们自己，此处用反身代词ourselves。故填ourselves。
（3）
21．which 22．fastest 23．running 24．world’s 25．tons 26．second 27．tools 28．communicate 29．longer 30．ocean
【导语】本文介绍了地球上几种令人惊叹的动物之最。
21．句意：你知道哪种动物寿命最长吗？根据“animal lives the longest”可知是哪种动物活得最久，which“哪个”。故填which。
22．句意：世界上速度最快的动物是猎豹，它们能以每小时约120公里的速度奔跑。根据“Cheetahs can run at about 120 kilometers an hour”可知猎豹的速度最快，故此处用最高级fastest“最快的”。故填fastest。
23．句意：当它们奔跑时，腾空时间比触地时间还长。根据“at that speed”可知是在它们跑的时候，run“跑”，此处用现在分词和be动词构成现在进行时。故填running。
24．句意：蓝鲸是世界上最大的动物。根据“largest animals”可知鲸鱼是海洋里最大的动物，修饰名词用所有格world’s。故填world’s。
25．句意：它们体长约33米，重达170吨。根据“weigh around 170”可知是重170吨，用名词复数tons“吨”。故填tons。
26．句意：第二聪明的动物是黑猩猩。根据“the smartest animal in the world is the human”可知是世界上第二聪明的动物，表示顺序用序数词second。故填second。
27．句意：黑猩猩能制造工具、建造物品。根据“Chimps can make...and build things”可知黑猩猩可以做工具，tool“工具”，用名词复数。故填tools。
28．句意：有些黑猩猩甚至能用双手比划出单词来交流。根据“make words and ”可知比划出单词来交流，communicate“沟通”，and前后的动词形式一致，此处用动词原形。故填communicate。
29．句意：确实，陆龟比陆地上的其他动物活得更久。根据“than other animals on land”可知乌龟比其他动物活得长，根据“than”可知此处用比较级longer。故填longer。
30．句意：实际上，有些海洋动物的寿命更长。根据“Some koi, a kind of goldfish”可知是其他的海洋动物，ocean“海洋”。故填ocean。
（4）
31．meters 32．famous 33．However 34．message 35．sitting 36．their 37．fell 38．when 39．through 40．protect
【导语】本文是一篇说明文。主要介绍了加利福尼亚的一棵著名的红杉树。
31．句意：它们的直径可以达到8米。根据“They can reach up to eight ... in diameter (直径).”和备选词汇可知，meter“米”符合语境，且eight后加复数。故填meters。
32．句意：加利福尼亚的大红杉以底部有一个大洞而闻名。根据“thousands of people travel to see it each year.”可知这棵红杉很出名，famous“著名的”符合语境，be famous for“因……而出名”。故填famous。
33．句意：然而，周日这棵大红杉在暴风雨中倒下了。根据“The tree is up to 2,000 years old. Until now, thousands of people travel to see it each year.”和“on Sunday the large sequoia fell down during a storm.”可知，前后文是转折关系，however“然而”符合语境，且句首字母需大写。故填However。
34．句意：“但是没有人受伤，”互联网上的一条消息说。根据“‘But no one was hurt,’ said a ... on the Internet.”和备选词汇可知，“但是没有人受伤”这是互联网上的一条消息。message“消息”符合语境，a后加单数。故填message。
35．句意：许多游客站着或坐在著名的红杉下拍照。根据“Many visitors took pictures while standing or ... under the famous sequoia.”和备选词汇可知，游客在红杉树下站着或坐着拍照，sit“坐”符合语境，且while后用动名词。故填sitting。
36．句意：在听到关于这棵树的消息后，一些人在互联网上发布了关于他们记忆的照片和信息。根据“After hearing the news about the tree, some posted photos and messages on the Internet about ... memories”和备选词汇可知，一些人发布了有关他们记忆的照片和信息，they的形容词性物主代词their“他们的”符合语境，修饰名词memories。故填their。
37．句意：大红杉倒了!根据前文“on Sunday the large sequoia fell down during a storm”和备选词汇可知，这棵红杉倒了，fall“倒下”符合语境，且句子是一般过去时，动词用过去式fell。故填fell。
38．句意：她说，父母第一次带她去看这棵树时，她才12岁。根据“She said she was just 12 ... her parents first took her to see the tree.”和备选词汇可知，第一次看到这棵树时，她才12岁，when“当……时”符合语境。故填when。
39．句意：人们在19世纪80年代挖了这个洞，让人和汽车通过。根据“People made the hole in the 1880s to let people and cars pass...”和备选词汇可知，挖洞是让人和汽车从中通过，through“（从内部）穿过”符合语境。故填through。
40．句意：在过去的几年里，为了保护这棵树，只有人可以穿过这个洞。根据“to ... the tree, only people could walk through the hole.”和备选词汇可知，只有人可以穿过是为了保护这棵树，不定式to do表示目的，protect“保护”符合语境。故填protect。
短文填空
（1）
阅读下面短文，在空白处填入一个适当的单词或括号内单词的正确形式。
Elephants are among the biggest mammals in the world. There are two kinds of elephants, the 1 (Africa) elephants and the Asian elephants. The main 2 (different) between them is that the Asian one has much 3 (small) ears. The African elephant uses its bigger ears 4 (cool) during the summer. The elephants use their feet to feel the vibrations (震动) 5 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 6 (weigh) about 5, 000 kg. Adult elephants spend 15 to 18 hours a day 7 (eat) 250 to 300 kilos of food. Elephants can live up to about 70 years.
8 (they) eyesight (视力) is very poor. 9 don’t be upset with them. The elephant has 10 biggest brain among the mammals on land!
（2）
阅读下面短文, 在空白处填入一个适当的词, 或填入括号中所给单词的适当形式。
My name is Pingo. I am a two-year-old emperor penguin (帝企鹅). I live 11 Antarctica (南极洲) with all the other emperor penguins. There are no emperor penguins anywhere else in the world.
Together with many other penguins, we make up a group. We spend 12 (we) whole lives here and the temperature can drop to-75°F. We have special 13 (way) of keeping warm.
Emperor penguins are 14 (large) penguins in the world. In our group, 15 an emperor penguin is 9 months old, he is fully grown (成年的). The tallest in my group is Pablo—4 feet tall. Emperor penguins are heavy too. Pablo is more than 100 pounds. I'm not as tall as Pablo.
A funny thing about us is that we are birds with wings (翅膀), 16 we can’t fly. We use our wings 17 (help) us swim faster under water.
Most emperor penguins live for 15 to 20 years. Polly, a member of our group, will be 38 this year. She’s 18 (real) old as a penguin.
I am getting a little worried about 19 future of emperor penguins. The weather is changing in the Antarctic sea and that could greatly hurt us. Scientists say we could all 20 (die) by the year 2100 if it keeps getting warmer and warmer. That’s too bad.
（3）
阅读下面短文，在空白处填入一个适当的单词或用括号内单词的正确形式填空。
Last summer vacation, I decided 21 (visit) Wolong in Sichuan Province. Before I started, my mum reminded me to take care of 22 (I) again and again. Because it was my 23 (one) time to travel alone, I felt really nervous.
Wolong is a large nature reserve (自然保护区). It 24 (have) several panda bases. I stayed at a small hotel next 25 Wolong Panda Centre after I arrived. I was going to visit the centre the next morning.
Everything went 26 (good) at first the next day. I saw many pandas playing in the 27 (tree). They looked so cute. I was not nervous anymore. I also tried to feed them 28 some bamboo. They were happy and even wanted 29 (get) close to me. Later, I left the centre 30 (happy).
But while I was going back to the hotel, I 31 (lose) my way. I was so worried that I nearly cried. At that moment, 32 man came up to me and asked if I needed any help. Then he showed me the way 33 I arrived at the hotel in the end. The trip to Wolong not only allowed me to learn about pandas, but also let me meet 34 (friend) people. This experience 35 (give) me the courage to travel alone again in the future.
（4）
阅读下面短文，在空白处填入一个适当的单词或用括号内单词的正确形式填空。
Animals are very important in our lives. They are not just a part of nature, but also 36 (we) good friends. They help us in many ways and make our world more 37 (colour).
First, some animals work for us. For example, dogs can help the police find 38 (lose) people or catch bad people. They are very smart and loyal. 39 (cow) and sheep give us milk and wool, which we use to make food and clothes. Without them, life might be much 40 (hard) than before.
Second, animals bring us 41 (happy). Many people keep pets like cats, dogs or birds at home. These pets are like family members. They play with us and make us feel 42 (little) lonely than before. When we are sad, they can comfort us with their love.
Third, animals are important for 43 environment. Bees help flowers grow by 44 (carry) pollen (花粉). Birds eat insects and keep the balance of nature. 45 there were no animals, our world would not be so beautiful.
However, some animals are in danger because of human 46 (activity). We cut 47 forests, pollute rivers and hunt too much. These make it hard for animals 48 (live). We must protect them and their homes. We can do small things like not littering, planting trees and learning more about animals.
All in all, animals 49 (be) our good friends. They help us, make us happy and keep our world beautiful. Let’s treat them 50 love and care, so we can live together in a better world.
短文填空参考答案
（1）
1．African 2．difference 3．smaller 4．to cool 5．on 6．weighs 7．eating 8．Their 9．But 10．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。
1．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。
2．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。
3．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。
4．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。
5．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。
6．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。
7．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。
8．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。
9．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。
10．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。
（2）
11．in 12．our 13．ways 14．the largest 15．when 16．but 17．to help 18．really 19．the 20．have die
【导语】本文主要介绍了作者作为一只两岁大的帝企鹅在南极洲的生活情况。
11．句意：我和所有其他帝企鹅一起生活在南极洲。live in+地点名词，表示“住在……地方”。故填in。
12． 句意：我们一生都生活在这里，温度可以降到零下75华氏度。we“我们”，是主格形式，修饰名词whole lives，用形容词性物主代词。故填our。
13．句意：我们有特殊的保暖方式。根据谓语动词“have”可知，此处用复数名词ways作宾语，表示“方式”。故填ways。
14．句意：帝企鹅是世界上最大的企鹅。根据“in the world”可知，此处用形容词最高级the largest修饰名词penguins。故填the largest。
15．句意：在我们的群体中，当一只帝企鹅9个月大时，它就完全长大了。根据主句“he is fully grown”和从句“an emperor penguin is 9 months old”可知，从句表示时间，应用连词when引导时间状语从句。故填when。
16．句意：关于我们的一件有趣的事情是，我们是有翅膀的鸟，但我们不能飞。根据“we are birds with wings”和“we can’t fly”可知，前后句之间是转折关系，应用连词but连接两个句子。故填but。
17．句意：我们用翅膀来帮助我们在水下游得更快。use sth. to do sth.“用某物做某事”是固定搭配，此处用不定式to help作目的状语。故填to help。
18．句意：作为一只企鹅，她真的很老了。修饰形容词old，应用副词；real的副词really“真正地”。故填really。
19．句意：我开始有点儿担心帝企鹅的未来。根据空后的名词“future”可知，此处用定冠词the表示特指。故填the。
20．句意：科学家说，如果天气继续变暖，我们可能会在2100年前全部死亡。根据“by the year 2100”可知，此处用完成时have done结构，情态动词“could”后接动词原形。故填have died。
（3）
21．to visit 22．myself 23．first 24．has 25．to 26．well 27．trees 28．with 29．to get 30．happily 31．lost 32．a 33．and 34．friendly 35．gives
【导语】本文主要介绍了作者的四川卧龙之旅。
21．句意：去年暑假，我决定去四川卧龙旅游。decide to do sth“决定做某事”，是固定搭配。故填to visit。
22．句意：在我开始之前，我妈妈一遍又一遍地提醒我要照顾好自己。根据“my mum reminded me to take care of...”可知，此处指照顾我自己，应填I的反身代词myself。故填myself。
23．句意：因为这是我第一次独自旅行，所以我感到非常紧张。根据“my... time”可知，此处指第一次，应填one的序数词形式。故填first。
24．句意：它有几个熊猫基地。此处陈述一般事实，时态为一般现在时，主语是It，谓语用三单形式，have的三单形式是has。故填has。
25．句意：到达后，我住在卧龙熊猫中心旁边的一家小旅馆里。next to“紧挨着，靠近”，是固定搭配。故填to。
26．句意：第二天开始一切都很顺利。根据“went”可知，此处修饰副词went，应用good的副词形式well。故填well。
27．句意：我看到许多熊猫在树上玩耍。根据“I saw many pandas playing in the...”可知，此处泛指多棵树，应用tree的复数形式。故填trees。
28．句意：我还试图用一些竹子喂它们。feed... with...“用……喂……”，是固定搭配。故填with。
29．句意：它们很高兴，甚至想接近我。want to do sth“想要做某事”，是固定搭配。故填to get。
30．句意：后来，我开心地离开了中心。根据“left”可知，此处应用happy的副词形式修饰动词left。故填happily。
31．句意：但在回旅馆的路上，我迷路了。根据“was”可知，时态为一般过去时，lose的过去式是lost。故填lost。
32．句意：就在这时，一个男人走到我面前，问我是否需要帮助。根据“... man came up to me and asked if I needed any help”可知，此处泛指一个男人，且man是以辅音音素开头的单词。故填a。
33．句意：然后他给我指了路，并且我终于到了旅馆。“he showed me the way”和“I arrived at the hotel”之间是并列关系，应填连词and。故填and。
34．句意：卧龙之行不仅让我了解了熊猫，也让我认识了友好的人。根据“people”可知，此处应填形容词作定语，修饰名词people，friendly“友好的”，是形容词。故填friendly。
35．句意：这次经历给了我以后再次独自旅行的勇气。时态为一般现在时，主语是单数“This experience”，所以谓语动词用三单形式，give的三单形式是gives。故填gives。
（4）
36．our 37．colourful 38．lost 39．Cows 40．harder 41．happiness 42．less 43．the 44．carrying 45．If 46．activities 47．down 48．to live 49．are 50．with
【导语】本文主要讲述了动物对人类和地球的重要性，以及人类应该如何保护动物。
36．句意：它们不仅仅是大自然的一部分，也是我们的好朋友。根据“good friends”可知，此处使用形容词性物主代词our，表示“我们的好朋友”。故填our。
37．句意：它们在很多方面帮助我们，让我们的世界更加丰富多彩。根据“more”可知，此处使用形容词colourful的比较级more colourful，表示“更加丰富多彩的”。故填colourful。
38．句意：例如，狗可以帮助警察找到失踪的人或抓住坏人。根据“people”可知，此处使用形容词lost作定语修饰名词people，表示“失踪的人”。故填lost。
39．句意：奶牛和羊给我们提供牛奶和羊毛，我们用它们来制作食物和衣服。此处使用名词复数cows，表示“奶牛”，表泛指。故填Cows。
40．句意：没有它们，生活可能比以前艰难得多。根据“than”可知，此处使用形容词hard的比较级harder，表示“更艰难的”。故填harder。
41．句意：其次，动物给我们带来快乐。根据“bring us”可知，此处使用名词happiness，表示“快乐”，作宾语。故填happiness。
42．句意：它们和我们一起玩耍，让我们感觉比以前不那么孤独。根据“than”可知，此处使用形容词little的比较级less，表示“不那么……”，less lonely“不那么孤独”。故填less。
43．句意：第三，动物对环境很重要。根据“environment”可知，此处使用定冠词the，表示特指“环境”。故填the。
44．句意：蜜蜂通过携带花粉帮助花朵生长。根据“by”可知，此处使用动名词carrying，表示“携带”，作介词by的宾语。故填carrying。
45．句意：如果没有动物，我们的世界就不会如此美丽。根据“there were no animals, our world would not be so beautiful”可知，此处表示假设，使用if引导条件状语从句，表示“如果没有动物”。故填If。
46．句意：然而，由于人类活动，一些动物处于危险之中。根据“human”可知，此处使用名词复数activities，表示“人类活动”，activity是可数名词，此处用复数形式表示泛指。故填activities。
47．句意：我们砍伐森林，污染河流，过度捕猎。根据“forests”可知，此处使用动词短语cut down，表示“砍伐”，cut down forests“砍伐森林”。故填down。
48．句意：这些让动物难以生存。根据“make it hard for animals”可知，此处使用动词不定式to live，表示“生存”，make it + adj. + for sb. to do sth.“让某人做某事……”。故填to live。
49．句意：总之，动物是我们的好朋友。本句时态为一般现在时，主语是animals，be动词are。故填are。
50．句意：让我们用爱和关怀对待它们，这样我们就能生活在一个更美好的世界里。根据“treat them”可知，此处使用介词with，表示“用”，treat sb. with love and care“用爱和关怀对待某人”。故填with
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