文档内容
Unit 4 Amazing Plants and Animals
课时 1 Section A (1a-1d) 分层作业
核心知识速记 03 拓展培优
01 基础达标 05 思维进阶
02 能力提升
词汇
cheetah n. 猎豹 redwood tree n. 红杉树
moss n. 苔藓 blue whale n. 蓝鲸
beautiful adj. 美丽的 biggest adj. 最大的 fastest adj. 最快的；adv. 最快 heaviest adj. 最重的
地
largest adj. 最大的 longest adj. 最长的 oldest adj. 最老的；最旧的 smallest adj. 最小的
shortest adj. 最矮的；最短的
tallest adj. 最高的
句型
1. — What ’ s amazing about the cheetah? 猎豹有什么神奇之处？
— It ’ s one of the fastest land animals. 它是跑得最快的陆地动物之一。
2. — What ’ s the largest animal in the world? 世界上最大的动物是什么？
— I t’s the blue whale. 是蓝鲸。
一、单词默写
1. _______ [mɒs] n. 苔藓 4. _______ [ˈredwʊd triː] n. 红杉树
2. _______ [bluː weɪl] n. 蓝鲸 5. _______ [ˈbjuːtɪfl] adj. 美丽的
3. _______ [ˈtʃiːtə] n. 猎豹 6. _______ [fɑːst] adj. 最快的；adv. 最快地
二、词组默写
1. 世界上最大的动物 _____________________ 2. 跑得最快的陆地动物之一 _________________3. 最古老的植物之一 _______________________ 6. 停止污染海洋 _______________________
4. 拒绝砍伐它们 _______________________ 7. 与…… 有联系 _______________________
5. 保护它们的家园 _______________________ 8. 同意做某事 _______________________
三、根据要求完成句子
1. 红杉树有什么神奇之处？它是世界上最高的树之一。
What’s amazing about the redwood tree? It’s one of the _______ _______ in the world.
2. 世界上最古老的植物之一是什么？是苔藓。
What’s one of the _______ _______ in the world? It’s moss.
3. 猎豹是陆地上跑得最快的动物。
The cheetah is the _______ _______ on land.
4. 我们应该保护蓝鲸，因为它们是地球上最大的动物。
We should protect blue whales because they are the _______ _______ on Earth.
5. 苔藓很神奇，因为它大约 4.7 亿年前就出现在地球上了。
Moss is amazing because it appeared on Earth about 470 million years _______.
6. 你为什么认为红杉树很神奇？
_______ do you think redwood trees are amazing?
7. 因为它们能长得很高。
_______ they can grow very _______.
8. 我们必须停止人们杀害猎豹。
We must _______ people from _______ cheetahs.
四、用括号内所给词的适当形式填空
1. The blue whale is the _______ (large) animal in the world.
2. Moss is one of the _______ (old) plants on Earth.
3. My brother and I _______ (agree) to protect redwood trees last week.
4. I think the cheetah runs _______ (fast) than any other animal on land.
5. We should stop _______ (pollute) the ocean to help blue whales.
6. The redwood tree is one of the _______ (tall) trees in the world.
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）
fast large old tall animal plant protect important because amazing
There are many animals and 1._______ in the world. Some of them are very 2._______. Let’s learn about some
of them.
The blue whale is the 3._______ animal on Earth. It is also one of the heaviest 4._______. The cheetah is 5._______ among all land animals. It can run very quickly.
Moss is one of the 6._______ plants. It appeared on Earth a long time ago. The redwood tree is one of the
7._______ trees. It can grow up to more than 100 meters.
Why are these animals and plants special? 8._______ they have unique features. We should 9._______ them
because they are 10._______ to our world.
六、阅读还原
There are many amazing plants and animals in the world. Each has its own special traits. 1.______
The kangaroo has a strong pouch on its belly. Baby kangaroos live in the pouch until they grow
up. 2.______ That's why it's a special jumper in the animal world.
3.______It turns slowly during the day to face the sun. When it grows, it can be over 3 meters
tall, with big yellow flowers. That's why it's called a "sun chaser" in the plant world.
The octopus is clever. It has eight long arms to catch food. When in danger, it can spray dark ink
to hide and escape. 4.______
The cactus is good at living in dry places.5.______ Its sharp spines keep animals from eating it.
That's why it's a great "dry land survivor."
These plants and animals show us how wonderful nature is. We must care for them.
A. The sunflower is a lovely plant. B. Let's learn about some of them.
C. That's why it's a smart survivor in the ocean.
D.It stores water in its thick stem to survive hot, dry weather.
E. It can also jump very far—up to 9 meters in one leap!
七、阅读理解
Rainforests（热带雨林） are some of the most amazing places on Earth. They cover only about 6%
of the world's land, but are home to more than half of all living things. These dense forests are full of
life, from tiny insects to large animals, and from small plants to tall trees.
The rainforest has different layers. The top layer is called the emergent layer, where the tallest trees
reach up to 70 meters. Below that is the canopy, a thick layer of leaves and branches that stops most
sunlight from reaching the layers below. Next is the understory, with smaller trees and bushes. The
bottom layer is the forest floor, where only a little sunlight gets through.
Many rainforest animals have special skills to live in their layers. For example, sloths hang from the
canopy branches. Their long claws help them stay there, and their slow movement helps them save
energy. Toucans have big beaks to reach fruit on thin branches that can't hold their weight. On the forest
floor, jaguars use their spots to hide in the shadows while hunting.
Rainforests are important for the whole world. They take in carbon dioxide（二氧化碳） and give
out oxygen（氧气）, which helps keep the air clean. They also help control the world's weather. Butrainforests are in danger. Every year, large areas are cut down for wood or to make space for farms.
This destroys the homes of many animals and plants, and may even change the world's climate.
1. (细节理解题) What percentage of the world's land do rainforests cover?
A.About 6% B. About 16%
C. About 26% D. About 36%
2. (词义推测题) What does the word "dense" mean in the first paragraph?
A. Dry B. Thick with plants
C. Cold D. Easy to walk through
3. (推理判断题) Why do toucans have big beaks?
A. To hang from branches B. To hide from predators
C. To reach fruit on thin branches D. To run fast on the forest floor
4. (排序题) Put the layers of the rainforest from top to bottom.
① understory ② emergent layer ③ forest floor ④ canopy
A. ②→④→①→③ B. ④→②→①→③
C. ②→①→④→③ D. ④→①→②→③
5. (主旨大意题) What is the main idea of the passage?
A. How animals live in the rainforest
B. The layers of the rainforest
C. Why rainforests are amazing and important
D. How to cut down rainforests
八、完形填空
The cheetah is one of the most amazing animals in the world. It lives in Africa. Cheetahs are 1.______ than any
other animal on land. They can run at a speed of up to 120 kilometers per hour. But they can't run fast for a long time.
They get tired 2.______.
Cheetahs have special features that help them run fast. They have long legs and a long tail. The tail helps them
keep their balance 3.______ running. Their claws are also special. They are like spikes (尖状物) that help the cheetah
4.______ on the ground.
Cheetahs have a slim body and strong muscles. These help them move 5.______ when chasing prey. Their eyes
are large, which lets them 6.______ their prey from far away.
Cheetahs are carnivores (食肉动物). They eat small animals like rabbits and deer. They 7.______ their prey by
running fast. They can catch their prey quickly, but if they fail, they need to rest for a while.
Baby cheetahs learn to hunt from their mothers. They start 8.______ small animals when they are about three
months old. By the time they are a year old, they can hunt on their own.
But cheetahs are in danger. People are taking over their land. They are also killing cheetahs. We need to 9.______
cheetahs. We can do this by protecting their homes and stopping people from killing them. If we don't act now, there
may be no cheetahs 10.______ in the future.1. A. fast B. faster C. fastest D. the fastest
2. A. easily B. slowly C. quickly D. happily
3. A. when B. before C. after D. until
4. A. stand B. run C. walk D. jump
5. A. slowly B. suddenly C. smoothly D. loudly
6. A. hear B. smell C. touch D. see
7. A. catch B. eat C. find D. see
8. A. hunting B. feeding C. watching D. helping
9. A. kill B. protect C. eat D. catch
10. A. left B. stayed C. kept D. lived
Part 1: Read and Explore
The blue whale is the largest animal that has ever lived on Earth. It can grow up to 30 meters long and weigh
as much as 173 tons. That's about the weight of 25 African elephants!
Blue whales live in the ocean. They eat small sea animals called krill (磷虾). An adult blue whale can eat up to
4 tons of krill in a day.
Blue whales are in danger. There are only about 10,000 to 25,000 blue whales left in the world. The main
reasons are:
People hunt them for their oil and meat.
The ocean is being polluted, which hurts the krill that blue whales eat.
Ships sometimes hit blue whales, killing them.
We need to protect blue whales. Many countries have made laws to stop hunting blue whales. We can also help
by keeping the ocean clean.
Part 2: Skills Challenge
Task 1: Critical Thinking（根据文章内容回答下列问题）
1. Why is krill important to blue whales? (用 "because" 完整回答)
2. 找出两个蓝鲸濒危的原因：
Reason 1:____________________________________________________________________________________
Reason 2:____________________________________________________________________________________
3. 设计一个英文标语呼吁保护蓝鲸：
"_________________________________________!"
Task 2: Complete the chart below（根据文章内容完成表格）
Animal Home Special Food Actions to save themBlue whale __________ __________ 2. __________________________________
3. __________________________________
Task 3: Creative Project
假设你是一名环保志愿者，设计一个 “蓝鲸保护计划”（Blue Whale Protection Project），需包含：
2 个具体行动（参考文中措施）
1 个创新点子（如：用 APP 宣传蓝鲸保护）
We will ______________________________________ and ______________________________________.
Also, we plan to ______________________________________ .
