资源简介

答案解析
Day 1 · 基础夯实
一、任务型阅读
1. 答案：They take in dirty air and give clean air to us.；解析：根据原文“They take in dirty air and give clean air to us”，直接提取树木净化空气的方式。
2. 答案：Many kinds of beautiful flowers and delicious fruits.；解析：根据原文“Trees also give us many kinds of beautiful flowers and delicious fruits”，提取树木的馈赠。
3. 答案：Because we are hurting them.；解析：根据原文“But we are hurting them and they can’t grow back fast”，说明树木难再生的原因。
4. 答案：Yes. Because they keep the air clean and give us fruits.（答案不唯一，合理即可）；解析：开放性试题，围绕树木的重要性作答。
5. 答案：许多动物因此失去了家园。；解析：lose their homes 意为“失去家园”，because of 意为“因为”，准确翻译即可。
二、选词填空
1. 答案：a；解析：important以元音音素开头，“an important part”表示“一个重要部分”。
2. 答案：cutting；解析：介词by后接动名词，cut down 意为“砍伐”。
3. 答案：save；解析：should后接动词原形，save 意为“拯救”。
4. 答案：Why；解析：后文讲述原因，此处用Why引导特殊疑问句，首字母大写。
5. 答案：balanced；解析：keep sth. + 形容词，balanced 意为“平衡的”。
6. 答案：cultures；解析：many后接可数名词复数，culture 意为“文化”。
7. 答案：their；解析：形容词性物主代词，修饰living habits，意为“它们的”。
8. 答案：friendly；解析：be friendly to 意为“对……友好”。
9. 答案：follow；解析：ask sb. to do sth.，follow the rules 意为“遵守规则”。
10. 答案：needs；解析：主语government为单数，谓语动词用needs，意为“需要”。
Day 2 · 巩固练习
一、任务型阅读
1. 答案：In Northeast China.；解析：根据原文“The famous Changbai Mountains lie in Northeast China”，直接提取位置。
2. 答案：Because the landscape is beautiful and the weather is cool.；解析：根据原文“the landscape is very beautiful. And the weather is cool”，提取两点原因。
3. 答案：They can see snow and ski.；解析：根据原文“The best time to see snow and ski is from November to March”，可知12月可赏雪滑雪。
4. 答案：It’s about 4.2 kilometres long and 3 kilometres wide.；解析：根据原文“Tianchi Lake is about 4.2 kilometres long and 3 kilometres wide”，提取尺寸。
5. 答案：I will visit Tianchi first. Because it’s the most famous part.（答案不唯一，合理即可）；解析：开放性试题，结合天池的知名度作答。
二、阅读还原
1. 答案：B；解析：后文讲少吃肉，对应选项B。
2. 答案：D；解析：后文讲皮毛衣服，对应选项D。
3. 答案：A；解析：后文讲捐钱给AH，对应选项A。
4. 答案：E；解析：后文讲种树，对应选项E。
5. 答案：C；解析：后文讲告诉他人保护动物，对应选项C。
Day 3 · 重点提升
一、阅读还原
1. 答案：C；解析：前文说地球生病，后文讲低碳生活，C“我们必须保护它”承上启下。
2. 答案：A；解析：前文关灯，后文节水，A“也要节水”衔接。
3. 答案：D；解析：后文说不乱买东西，D“明智购物”对应。
4. 答案：B；解析：后文说健康环保，B“短途步行骑车”对应。
5. 答案：E；解析：总结段，E“低碳不难”收尾。
二、任务型阅读
1. 答案：They are big, strong and clever.；解析：根据原文“They are big and strong, and they are very clever”，精简作答。
2. 答案：People cut down too many trees.；解析：根据原文“One of the main reasons is that people cut down too many trees”，精简作答。
3. 答案：Plants.；解析：根据原文“Elephants live in forests and eat plants”，直接作答。
4. 答案：We should stop cutting down forests.；解析：根据原文“First, we should stop cutting down forests”，任选一条作答。
5. 答案：They are important to nature.；解析：根据原文“They are important to nature”，精简作答。
Day 4 · 能力进阶
一、阅读还原
1. 答案：E；解析：后文说水循环移动，E“水不总待一处”对应。
2. 答案：B；解析：后文讲水循环过程，B“水循环如何发生”提问。
3. 答案：D；解析：后文说水滴聚云，D“变成小水滴”衔接。
4. 答案：A；解析：后文说下落成雨雪，A“水开始下落”对应。
5. 答案：C；解析：结尾总结，C“水循环重新开始”收尾。
二、选词填空
1. 答案：fresh；解析：树木净化空气，给我们新鲜空气。
2. 答案：us；解析：give sb. sth.，we变宾格us。
3. 答案：make；解析：use sth. to do，make a fire 意为“生火”。
4. 答案：for；解析：hold soil for plants 意为“为植物固土”。
5. 答案：cutting；解析：现在进行时，cut down 意为“砍伐”。
6. 答案：buildings；解析：new后接复数名词，意为“建筑物”。
7. 答案：When；解析：时间状语从句，首字母大写。
8. 答案：save；解析：help to do，save trees 意为“拯救树木”。
9. 答案：students；解析：学校里学生种树，用复数。
10. 答案：paper；解析：旧纸造新纸，不可数名词。
Day 5 · 拓展运用
一、选词填空
1. 答案：However；解析：前后转折，首字母大写。
2. 答案：dangerous；解析：be dangerous for 意为“对……危险”。
3. 答案：easily；解析：副词修饰动词break down，意为“容易地”。
4. 答案：a；解析：a very long time 意为“很长一段时间”。
5. 答案：lives；解析：lose one’s life，复数表生命。
6. 答案：often；解析：副词，意为“经常”误食塑料。
7. 答案：kill；解析：and连接动词，意为“杀死”。
8. 答案：must；解析：情态动词，意为“必须”行动。
9. 答案：to pick；解析：remember to do，pick up 意为“捡起”。
10. 答案：If；解析：条件状语从句，首字母大写。
二、阅读还原
1. 答案：A；解析：后文说长度，A“约5460公里长”对应。
2. 答案：C；解析：后文说泥沙，C“颜色来自泥沙”解释得名。
3. 答案：E；解析：前文流经九省，E“注入渤海”收尾流向。
4. 答案：D；解析：前文夏秋多雨，D“冬春少雨”对比。
5. 答案：B；解析：后文说象征意义，B“不只是河流”升华。
Day 6 · 综合练习
一、任务型阅读
1. 答案：It lets us pick up litter while walking or jogging.；解析：根据原文“This activity lets you pick up litter while you walk or jog”，直接作答。
2. 答案：It comes from Sweden.；解析：根据原文“The activity comes from Sweden”，直接作答。
3. 答案：Strong legs and a strong heart.；解析：根据原文“You can get strong legs and a strong heart”，提取答案。
4. 答案：A bag, a pair of gloves and sports shoes.；解析：根据原文“You only need a bag, a pair of gloves, and your sports shoes”，提取物品。
5. 答案：It’s good for the earth and body.（答案不唯一，合理即可）；解析：开放性试题，总结益处作答。
二、选词填空
1. 答案：highest；解析：珠穆朗玛峰是最高峰，用最高级。
2. 答案：calm；解析：feel后接形容词，意为“平静的”。
3. 答案：life；解析：绿色是生命之色，不可数名词。
4. 答案：saltier；解析：than提示比较级，意为“更咸”。
5. 答案：disappearing；解析：现在进行时，意为“消失”。
6. 答案：climate；解析：climate change 意为“气候变化”。
7. 答案：protect；解析：must后接动词原形，意为“保护”。
8. 答案：express；解析：can后接动词原形，意为“表达”。
9. 答案：describe；解析：describe beauty 意为“描述美景”。
10. 答案：present；解析：best后接名词，意为“礼物”。
Day 7 · 单元过关
一、任务型阅读
1. 答案：importance；解析：原文讲树木的重要性，填名词。
2. 答案：animals and plants；解析：原文“home for animals and plants”，直接作答。
3. 答案：come from；解析：原文“come from trees”，填短语。
4. 答案：trees；解析：原文“from trees”，填名词。
5. 答案：saving；解析：protecting与saving并列，动名词。
二、阅读还原
1. 答案：D；解析：后文讲问题，D“但它们遇到麻烦”转折。
2. 答案：A；解析：前文火灾，A“约20%巨杉被毁”讲后果。
3. 答案：C；解析：后文讲甲虫，C“另一个问题是甲虫”引出。
4. 答案：B；解析：前文甲虫钻孔，B“啃食树干”衔接。
5. 答案：E；解析：后文机器人，E“爬树找虫洞”讲方法。
三、选词填空
1. 答案：saltiest；解析：死海最咸，最高级。
2. 答案：easily；解析：副词修饰lie，意为“轻松地”。
3. 答案：level；解析：water level 意为“水位”。
4. 答案：less；解析：用更少的水，比较级。
5. 答案：of；解析：because of 意为“因为”。
6. 答案：disappear；解析：may后接动词原形，意为“消失”。
7. 答案：kinds；解析：many kinds of 意为“多种”。
8. 答案：their；解析：形容词性物主代词，修饰home。
9. 答案：However；解析：前后转折，首字母大写。
10. 答案：well；解析：as well as 意为“以及”。外研版（2024）七年级英语下册 Unit 5 Amazing nature
单元提分冲刺滚动练
学校：______________ 班级：______________ 姓名：______________
【资料亮点】
聚焦单元高频考点，突破易错题型，强化解题能力。
7天分层进阶训练，语篇与技能同步提升。
题型经典适配考试，可直接作业，附详细解析。
Day 1 · 基础夯实
一、任务型阅读（5小题，每题2分，共10分）
建议用时：8分钟 | 实际用时：____分钟 | 得分：____/10
答题要求：阅读短文，根据短文内容完成各题。
Trees are important to us. They do a lot for us, our environment (环境), and animals.
Trees help to keep the air clean and make us healthy. They take in dirty (肮脏的) air and give clean air to us. Go for a walk in the park in the morning, and you can feel how nice it is to be with many trees and clean air.
Trees also give us many kinds of beautiful flowers and delicious fruits like apples and oranges. Trees give homes to different insects, birds, and other animals. Even the sap (汁液) of trees is useful as food for insects.
Trees are very useful. We can use them in many ways. But we are hurting (伤害) them and they can’t grow back fast. We cut down trees to make paper (纸), desks, and chairs. Also, we sometimes clear (清空) the forest to make space (空间) to build houses, shops… Clearing the forest is bad. Many animals lose their homes because of this.
It is time for us to stop (停止) hurting our great friends—trees. Use less (较少的) paper and join in tree-planting activities. All of us can do something for our dear friends!
1．How do trees help us to keep the air clean and make us healthy
__________________________________________________________
2．What do trees give us
__________________________________________________________
3．Why can’t trees grow back fast
__________________________________________________________
4．Do you think trees are important to us Why
__________________________________________________________
5．请把划线的句子翻译成中文。
__________________________________________________________
二、选词填空（10小题，每题1分，共10分）
建议用时：7分钟 | 实际用时：____分钟 | 得分：____/10
答题要求：从方框中选择单词并用其适当形式填空，每词限用一次。
need they friendly cut culture why a balanced follow save
In our world, there are many amazing animals. From baby fish to big whales, animals are 1． important part of the world. But many animals are in danger. Many people are destroying (毁坏) animals’ homes by 2． down trees. So we should 3． these animals.
4． is it important to protect (保护) animals Firstly, animals play an important part in keeping the ecosystem (生态系统) 5． . If we don’t protect these animals, the result will be bad. Secondly, many animals are important to many different 6． around the world. For example, elephants are a symbol of good luck in Thai culture.
We can start to protect animals by learning about 7． living habits. We shouldn’t hurt them. Instead, we should be 8． to them. So we should take action (采取行动) to protect animals. For example, workers in the zoo should ask visitors to 9． the rules when they are in the zoo. The government (政府) also 10． to take action. For example, it can make laws (法律) to protect animals and tell people the importance of protecting animals.
Day 2 · 巩固练习
一、任务型阅读（5小题，每题2分，共10分）
建议用时：8分钟 | 实际用时：____分钟 | 得分：____/10
答题要求：阅读短文，根据短文内容完成各题。
The famous Changbai Mountains lie in Northeast China. The name means “Forever White Mountains”. The mountains got this name because of their beautiful snow-covered peaks (山峰). People began to use the name Changbai Mountains around 1000s. Before that, the mountains had different names in history. In a famous book, The Classic of Mountains and Seas, they were under the name of Buxian Shan. In Book of the Later Han, they were called Dandan, Daling.
The Changbai Mountains are beautiful all year round. The best time to take a trip there is between June and September. During this time, the landscape is very beautiful. And the weather is cool. It’s a great place for visitors to get away from high temperatures. It begins to snow in October. The best time to see snow and ski is from November to March.
The Changbai Mountains are home to lots of animals as well. Chinese mergansers (中华秋沙鸭) are among them. The animal is as rare (珍贵的) as the panda.
One of the most famous parts of the mountains is Tianchi. It is the world’s highest crater lake (火山湖). Tianchi Lake is about 4.2 kilometres long and 3 kilometres wide in area and it is the source of some great rivers like the Songhua River, Tumen River and Yalu River.
1．Where are the famous Changbai Mountains
_______________________________________________________
2．Why are the Changbai Mountains a great place for visitors to go on a trip (2点原因)
_______________________________________________________
3．What can people do there in December
_______________________________________________________
4．What are the length and width of Tianchi Lake
_______________________________________________________
5．What will you do first if you visit the Changbai Mountains And why
_______________________________________________________
二、阅读还原（五选五，5小题，每题2分，共10分）
建议用时：6分钟 | 实际用时：____分钟 | 得分：____/10
答题要求：从方框内所给五个选项中选出最佳选项补全短文。
Animals are important and they are our friends. But they’re in danger now. What can we do to help save them
1．
Some of us like to eat meat. It is delicious. But do you know some meat comes from endangered animals Only a small number of them live in the world now, because people kill them for meat. To save animals, eat less meat. And it’s healthy for us, too.
2．
Sometimes people kill animals for fur. But if we don’t buy or wear clothes made of fur, people will stop killing animals.
3．
AH always does everything to help save animals. But it often needs money. So please save some money and give it away to AH to help animals.
4．
We can plant more trees and flowers to make beautiful homes for wild animals. These places are safe for them to live and play.
5．
Not all people know animals are our friends and that we must save them. So why not tell people around us that it’s important to save animals It’s necessary (必要的) .
A．Give away money to the Animal Helper (AH)
B．Eat less meat
C．Tell people it’s important to save animals
D．Don’t wear clothes made of fur
E．Plant more trees
Day 3 · 重点提升
一、阅读还原（五选五，5小题，每题2分，共10分）
建议用时：6分钟 | 实际用时：____分钟 | 得分：____/10
答题要求：从方框内所给五个选项中选出最佳选项补全短文。
The Earth is our home, but it is getting sick. The weather is becoming warmer, and the environment is getting worse. 1． A low-carbon life (低碳生活) means we use less energy and make less pollution in our daily life.
First, we should save energy at home. Remember to turn off the lights when you leave a room. 2． Don’t let the water run while you are brushing your teeth. Small actions can save a lot of energy.
Second, think about your shopping habits. 3． Don’t buy things you don’t really need. If you buy too many clothes or toys, it is a waste of money and resources (资源).
Third, choose a green way to travel. Cars make the air dirty. 4． It is good for our health and the environment. If the place is far, you can take a bus or the subway.
5． If everyone tries to live a low-carbon life, our planet will become a better place. Let’s take action today!
A．Also, we should save water.
B．We can walk or ride a bike for short trips.
C．So we must do something to protect it.
D．Being a smart shopper is very important.
E．A low-carbon life is not hard to start.
二、任务型阅读（5小题，每题2分，共10分）
建议用时：8分钟 | 实际用时：____分钟 | 得分：____/10
答题要求：阅读短文，根据短文内容完成各题。
Elephants are amazing animals. They are big and strong, and they are very clever. They can remember places for a long time and help people do many things. But now, elephants are in danger.
One of the main reasons (主要原因) is that people cut down too many trees. Elephants live in forests and eat plants. When forests are destroyed, elephants have no homes or food. Another reason is that some people kill elephants for their ivory (象牙). Ivory is very expensive, so some bad people want to get it.
What can we do to save elephants First, we should stop cutting down forests. We need to protect elephants’ homes. Second, we should not buy or sell ivory products (产品). If no one buys ivory, bad people will not kill elephants. Third, we can tell our friends and family about the danger to elephants. Let more people know and help.
Elephants are our friends. They are important to nature. We must do our best to save them before it’s too late.
1．Why are elephants amazing animals (不超过15个词回答)
__________________________________________________________
2．What is one of the main reasons elephants are in danger (不超过10个词回答)
__________________________________________________________
3．What do elephants eat (不超过5个词回答)
__________________________________________________________
4．What can we do to save elephants (列出1条即可，不超过15个词回答)
__________________________________________________________
5．Why should we save elephants (不超过10个词回答)
__________________________________________________________
Day 4 · 能力进阶
一、阅读还原（五选五，5小题，每题2分，共10分）
建议用时：6分钟 | 实际用时：____分钟 | 得分：____/10
答题要求：从方框内所给五个选项中选出最佳选项补全短文。
Water is very important to all living things. People, animals and plants all need water to live. Water is always around us. 1． It moves from the earth to the sky, and then comes back to the earth again. We call this the water cycle.
2． The sun shines brightly over the rivers, lakes and seas. The water becomes warm because of the sun. It turns into water vapor (蒸汽) and goes up. When the water vapor reaches the sky, it starts to cool down. 3． They stay together in large groups. These groups of small water drops are clouds. When the clouds get too heavy with water, they can’t hold it any more. 4． It falls down to the ground. It may be rain, or sometimes snow in cold places.
The water that falls down runs into rivers, lakes and seas again. 5． It is a great natural cycle and never stops.
A．The water begins to fall down.
B．How does the water cycle happen
C．The water cycle starts all over again.
D．It changes into very small water drops.
E．It does not stay in one place all the time.
二、选词填空（10小题，每题1分，共10分）
建议用时：7分钟 | 实际用时：____分钟 | 得分：____/10
答题要求：从方框中选择单词并用其适当形式填空，每词限用一次。
building, for, fresh, student, cut, when, we, save, paper, make
The green leaves reach high into the air. They clean the dirty air and give us 1． air. Some trees give us fruit, like apples and oranges. Other trees give 2． nuts (坚果). People use the wood to 3． a fire for cooking and for warmth. They use the wood to make paper. The roots (根) reach down into the ground. They hold the soil (土壤) in place 4． other plants and grass.
All over the world, people are 5． down trees. People cut down trees to make room for new 6． . They cut down trees to get more wood and make more paper. 7． trees are cut down, animals lose their homes. There are fewer trees to clean the air and hold the soil in place.
People all over the world can help to 8． trees. In some schools, 9． plant trees. A factory uses the old paper to make new 10． . So fewer trees are cut down.
Day 5 · 拓展运用
一、选词填空（10小题，每题1分，共10分）
建议用时：7分钟 | 实际用时：____分钟 | 得分：____/10
答题要求：从方框中选择单词并用其适当形式填空，每词限用一次（有两项多余）。
a kill easy life often seldom if ever pick must danger however
Plastic (塑料) is very useful for us. 1． , it’s bad for animals. In fact, plastic can be very 2． for them. It makes life harder for them and puts them in danger.
Plastic is different from paper because most plastic doesn’t break down (分解) 3． . Some plastic bags stay in the sea for 4． very long time. Large sea animals like sharks may get trapped (被困) in them. If people do not help them in time, they will get hurt and even lose their 5． .
Also, animals 6． take small plastic pieces as food by mistake. The plastic in their bodies can make them sick (生病), and sometimes 7． them.
To protect animals, we 8． do something. When we go shopping, we should try to bring our cloth bags instead of plastic ones. When we see plastic on the ground, we should remember 9． it up. Every small effort can give a safe world to animals.
10． we stop littering plastic and put it in the right place, animals and humans can live happily together.
二、阅读还原（五选五，5小题，每题2分，共10分）
建议用时：6分钟 | 实际用时：____分钟 | 得分：____/10
答题要求：从方框内所给五个选项中选出最佳选项补全短文。
The Yellow River is one of the most important rivers in China. It is called the “Mother River”. 1． It is the second longest river in China.
The Yellow River gets its name from the yellow- brown colour of its water. 2． The river carries lots of yellow soil when it runs through Shaanxi. The river starts in the mountains of western China. It runs through nine provinces (省份). 3．
In summer and autumn, it rains a lot in the Yellow River basin (流域). The river gets lots of water. 4． The river doesn’t have much water then. For a long time, the Yellow River brings lots of water and helps grow food.
Today, people are working hard to save the Yellow River. They are planting trees to stop soil from washing into the river. 5． It is a symbol (象征) of China’s history and culture.
Let’s all do our part to protect this great river.
A．It is about 5,460 kilometers long.
B．The Yellow River is not just a river.
C．This colour comes from the soil.
D．In winter and spring, there is a little rain.
E．Then it runs into the Bohai Sea in Shandong.
Day 6 · 综合练习
一、任务型阅读（5小题，每题2分，共10分）
建议用时：8分钟 | 实际用时：____分钟 | 得分：____/10
答题要求：阅读短文，根据短文内容完成各题。
Do you like walking or jogging They are both really good sports, right But there’s something even better — “plogging”. This activity lets you pick up litter while you walk or jog.
The activity comes from Sweden. The word “plogging” is a combination (结合) of the Swedish word “plocka upp” and the English word “jogging”. Today, many people around the world love plogging.
Why do people love plogging First, plogging is good for the earth. When you pick up litter, you help keep places around you, like the park, street and playground clean.
Plogging is also good for your body. When you jog, bend (弯曲) down, stand up, and jog again, your body works a lot. You can get strong legs and a strong heart.
Plogging is easy to start. You only need a bag, a pair of gloves, and your sports shoes. You can plog in the park, on your way to school, or at any place you like. You can do it yourself or with your family and friends, or even with your dog.
1．What does “plogging” let us do
_____________________________________________________________
2．Where does the activity “plogging” come from
_____________________________________________________________
3．What can you get from plogging for your body
_____________________________________________________________
4．What do we need to start plogging
_____________________________________________________________
5．What do you think of plogging (不超过15个词)
_____________________________________________________________
二、选词填空（10小题，每题1分，共10分）
建议用时：7分钟 | 实际用时：____分钟 | 得分：____/10
答题要求：从方框中选择单词并用其适当形式填空，每词限用一次。
express calmly description present life disappear climate salty protect high
The world is full of amazing nature. The Qinghai-Tibet Plateau is famous for the 1． mountain in the world—Mount Qomolangma. The blue sky and white clouds here make people feel 2． . Green is the color of 3． , so grasslands and fields are full of life.
The Dead Sea is a special lake. It is much 4． than any other sea in the world. People can lie on its surface easily. But now it is 5． slowly because people take too much water from rivers.
Glaciers are becoming fewer and smaller because of 6． change. These natural wonders are in great danger, so we must 7． them as soon as possible. We can 8． our deep love for nature in many ways. We can 9． the beauty of nature to our friends and family. Nature is the best 10． for all of us, so we should cherish it and protect it forever.
Day 7 · 单元过关
一、任务型阅读（5小题，每题2分，共10分）
建议用时：8分钟 | 实际用时：____分钟 | 得分：____/10
答题要求：阅读短文，根据短文内容完成各题。
Our Silent (无声的) Friends
From the forests to our towns and cities, trees are all around us. We share our world with trees. They are our silent friends, but we usually don’t realize they are important.
In fact, trees are very important for all living things on the earth. To begin with, forests are a safe place for animals and plants to live in. Trees are also good for us humans because they can cut down CO2 (二氧化碳) and make O2 (氧气). This means they help create a clean environment for everyone on this planet.
Trees make our lives better. Many of the things around us, such as paper and pencils, come from trees. Just look around your room—a lot of things in the house are made of wood. Trees also give us delicious fruit and wonderful drinks. For example, we can make tea from the leaves of the tea tree.
However, humans are not treating trees in a kind way. We are cutting down forests all over the world. We are polluting the water and the air, and this hurts trees. All these things are a big problem. We need to do more to protect trees and save our earth.
SummaryThe article tells us the 1． of trees for all living things on the earth.First, forests are home to 2． . Trees are also good for us humans because they can cut down CO2 (二氧化碳) and make O2 (氧气). Trees also make our lives better. What’s more, many things like paper and pencils 3． trees. A lot of things in our homes are made of wood. We get delicious fruit and wonderful drinks from 4． .However, humans are not treating trees in a kind way. To solve the problem, everyone should take action. Protecting trees and 5． our earth are what we should do in our daily life.
二、阅读还原（五选五，5小题，每题2分，共10分）
建议用时：6分钟 | 实际用时：____分钟 | 得分：____/10
答题要求：从方框内所给五个选项中选出最佳选项补全短文。
Sequoia National Park is in California, USA. It’s famous for its giant sequoia trees—the largest trees on Earth! Every year, thousands of people come to see these amazing trees. 1．
One big problem is wildfires. For example, because of the hot, dry weather, big fires burned in 2020 and 2021. 2． It may take much longer for both humans and nature to recover (恢复).
3． These beetles lived peacefully with sequoias in the past, but now they’re attacking them. They dig holes in the highest parts of the tree. 4． The beetles are small, but there are so many of them that they can kill a giant tree in just six months!
Scientists are trying to help. 5． However, it is impossible to climb every tree and look at its highest part. So now, scientists are using robots and satellites to record beetle activity over large areas of forest. In this way, they can help protect more trees.
A．Sadly, about 20% of the world’s 75,000 sequoias were killed.
B．And slowly these insects move down the trunk, eating the tree as they go.
C．Another problem comes from bark beetles, the tiny insects.
D．But they are in trouble.
E．They climb the trees to look for beetle holes.
三、选词填空（10小题，每题1分，共10分）
建议用时：7分钟 | 实际用时：____分钟 | 得分：____/10
答题要求：从方框中选择单词并用其适当形式填空，每词限用一次。
level their saltiest well However easily less of kinds disappear
The Dead Sea is one of the 1． places on Earth. Its water is so salty that people can lie 2． on its surface. But now the water 3． is dropping every year because people take too much water from the rivers that flow into it. Experts (专家) advise that people use 4． water from these rivers to save the Dead Sea.
In Glacier National Park, many glaciers are melting (融化) quickly because 5． climate change. If this continues, they may 6． completely in the future.
In the Amazon rainforest, there live many 7． of plants and animals. For 80% of them, the forest is 8． only home in the world. 9． , people are cutting down trees for wood and farmland. This affects the animals as 10． as the environment of the whole world.

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