资源简介

中小学教育资源及组卷应用平台
U5Amazing nature
(Starting out)
一、单词拼写
1.The Great Barrier Reef is one of the most famous natural w______ in the world.
2.The Nile River is the l______ river in the world.
3.We should take action to p______ the endangered animals.
4.The Gobi Desert is a large area covered with s______ and rocks.
5.The Northern Lights, or a______, are amazing natural light displays in the sky.
6.The cactus is a plant that can live in d______ conditions with little water.
7.The mountain top is c______ with snow all year round.
8.The Pacific Ocean is so v______ that you can’t see its edge from the shore.
9.It is very i______ for us to learn how to protect the natural environment.
10.The river f______ through the valley and finally flows into the sea.
二、单项选择
1.Mount Qomolangma is ______ mountain in the world.
A. high B. higher C. highest D. the highest
2.The Sahara Desert is ______ than any other desert in the world.
A. large B. larger C. largest D. the largest
3.The waterfall in the poem ______ by Li Bai looks very beautiful.
A. describe B. describes C. described D. describing
4.—______ is the Yangtze River
—It’s about 6,300 kilometers long.
A. How long B. How tall C. How far D. How wide
5.The trees in the rainforest ______ very tall to get sunlight.
21 世纪教育网(www.21cnjy.com)
中小学教育资源及组卷应用平台
A. grow B. grows C. growing D. grew
6.The sky is ______ clear that you can see millions of stars at night.
A. so B. such C. too D. very
7.We must learn about the ______ of protecting natural wonders.
A. important B. importance C. importantly D. more important
8.The Grand Canyon ______ by the Colorado River over millions of years.
A. create B. created C. is created D. was created
9.—What do you think of the ocean
—It’s ______ place I have ever visited.
A. peaceful B. more peaceful C. most peaceful D. the most peaceful
1.The aurora lights ______ different colors, like green, pink and purple.
A. show B. shows C. showing D. showed
三、完成句子
根据汉语意思完成英语句子，每空一词。
1.珠穆朗玛峰是世界上最高的山峰。
Mount Qomolangma is ______ ______ ______ in the world.
2.亚马逊雨林是世界上最大的雨林。
The Amazon Rainforest is ______ ______ ______ in the world.
3.我们应该尽最大努力保护自然环境。
We should ______ ______ ______ ______ to protect the natural environment.
4.极光在夜空中看起来非常神奇。
The aurora ______ ______ ______ in the night sky.
5.沙漠里的植物可以在很少水的地方生存。
Plants in the desert can live in places ______ ______ ______ water.
6.这座山被茂密的森林覆盖着。
21 世纪教育网(www.21cnjy.com)
中小学教育资源及组卷应用平台
The mountain ______ ______ ______ thick forests.
7.李白的这首诗描述了壮观的瀑布。
The poem by Li Bai ______ ______ ______ ______ the great waterfall.
8.我们能做什么来保护濒危动物？
What can we do ______ ______ the endangered animals
9.长江比中国的其他任何河流都长。
The Yangtze River is ______ ______ ______ ______ river in China.
10.了解自然奇观是一件很有趣的事情。
It is ______ ______ ______ about natural wonders.
四、补全对话
根据对话内容，从方框中选择合适的句子补全对话，其中有两项多余。
L: Hi, Jack! You’re reading a book about nature, right
J: Yes, Lily. It’s about amazing natural wonders around the world.
L: That sounds cool. 1. ______
J: I think the Grand Canyon is the most amazing one.
L: 2. ______
J: It’s in the United States. It’s one of the largest canyons in the world.
L: 3. ______
J: It’s about 446 kilometers long and up to 29 kilometers wide.
L: Wow, that’s huge! 4. ______
J: Yes, especially at sunrise and sunset. The rocks turn different colors.
L: That must be beautiful. 5. ______
J: Me too! I hope I can visit it one day.
A.Where is it located
B. What do you think is the most amazing natural wonder
21 世纪教育网(www.21cnjy.com)
中小学教育资源及组卷应用平台
C. How big is it
D. Is it very beautiful
E. I really want to go there too.
F. Do you like reading poetry
G. What other wonders do you know
五、完形填空
The world is full of amazing natural wonders. One of the most famous is the Grand Canyon
in the US. It is a huge canyon 1. ______ by the Colorado River over millions of years. The
canyon is about 446 kilometers long and 29 kilometers 2. ______ at its widest point. It is also
very deep, with some parts reaching over 1,800 meters.
The Grand Canyon is famous for its beautiful rocks. The rocks have different colors, from red
to brown, and they look 3. ______ at sunrise and sunset. Many people come here to see the
amazing views. Some walk along the trails, some take boats on the river, and others just stand
at the edge and look down.
Another amazing natural wonder is the Northern Lights. They are bright lights in the sky that
can be seen in the northern parts of the world. The lights come in different colors, like green,
pink, and purple. They are caused by the sun’s energy hitting the Earth’s atmosphere. Many
people travel to places like Norway and Iceland to see the Northern Lights, 4. ______ they
are very beautiful.
Nature is full of surprises. These natural wonders 5. ______ us how amazing the world is. We
should protect them so that future generations can also enjoy them.
The Amazon Rainforest is another wonder. It is the 6. ______ rainforest in the world. It is
home to millions of different plants and animals. The trees there are very tall, some over 50
meters high. The rainforest is very important because it helps clean the air. But people are
cutting down the trees, so the rainforest is getting smaller. We must do something to stop this
7. ______ protect the forest.
Many natural wonders are in danger. Pollution, climate change and human activities are
harming them. We need to learn about these problems and take action. Even small things, like
not wasting water or using less plastic, can help. 8. ______ we work together, we can protect
these amazing places for the future.
21 世纪教育网(www.21cnjy.com)
中小学教育资源及组卷应用平台
1.A. create B. created C. creating D. creates
2.A. wide B. wider C. widest D. the widest
3.A. beautiful B. more beautiful C. most beautiful D. the most beautiful
4.A. because B. so C. but D. or
5.A. show B. shows C. showing D. showed
6.A. large B. larger C. largest D. the largest
7.A. and B. but C. or D. so
8.A. If B. Because C. Though D. Unless
六、阅读理解
（A）
The Dead Sea is one of the most interesting natural wonders in the world. It is a salt lake
between Israel and Jordan. The Dead Sea is very famous because it is the lowest point on
land on Earth, about 430 meters below sea level.
The water in the Dead Sea is very salty—about 10 times saltier than ordinary seawater.
Because of the high salt content, people can float easily in the water. You don’t need to know
how to swim to float! Many tourists come here to float in the water and enjoy the view.
The Dead Sea is also known for its health benefits. The mud from the sea is rich in minerals,
and people use it to treat skin problems. However, the Dead Sea is shrinking every year
because of water use in the area. If we don’t do something, it may disappear in the future.
1.Where is the Dead Sea
A. Between Israel and Jordan.
B. Between the US and Canada.
C. Between China and India.
D. Between Norway and Iceland.
2.What is special about the Dead Sea
A. It is the highest lake in the world.
B. It is the lowest point on land on Earth.
21 世纪教育网(www.21cnjy.com)
中小学教育资源及组卷应用平台
C. It is the largest lake in the world.
D. It is the deepest lake in the world.
3.Why can people float easily in the Dead Sea
A. Because the water is very cold.
B. Because the water is very hot.
C. Because the water is very salty.
D. Because the water is very clear.
4.What do people use the mud from the Dead Sea for
A. To make food.
B. To treat skin problems.
C. To build houses.
D. To make clothes.
5.What is happening to the Dead Sea
A. It is getting bigger.
B. It is getting smaller.
C. It is getting warmer.
D. It is getting colder.
（B）
The Great Barrier Reef is the world’s largest coral reef system. It is located in the Coral Sea,
off the coast of Queensland, Australia. The reef is made up of more than 2,900 individual
reefs and 900 islands. It is so large that it can be seen from outer space!
The Great Barrier Reef is home to thousands of marine species, including fish, turtles, sharks,
and dolphins. The colorful corals are the most amazing part of the reef. They provide food
and shelter for many sea animals. However, the reef is in danger. Climate change is making
the ocean water warmer, which causes coral bleaching. When corals bleach, they lose their
color and die. Pollution and overfishing are also harming the reef.
21 世纪教育网(www.21cnjy.com)
中小学教育资源及组卷应用平台
Many scientists and environmental groups are working to protect the Great Barrier Reef.
They are trying to reduce pollution, control fishing, and fight climate change. If we don’t act
soon, this amazing natural wonder may disappear forever.
1.Where is the Great Barrier Reef located
A. Off the coast of Australia.
B. Off the coast of the US.
C. Off the coast of China.
D. Off the coast of Brazil.
2.What is the Great Barrier Reef made up of
A. Only large islands.
B. More than 2,900 reefs and 900 islands.
C. Only coral reefs.
D. A single large reef.
3.Why is the Great Barrier Reef in danger
A. Because too many tourists visit it.
B. Because the ocean water is getting warmer.
C. Because there are too many fish.
D. Because the reef is getting too big.
4.What is coral bleaching
A. Corals growing bigger.
B. Corals changing color to white and dying.
C. Corals moving to other places.
D. Corals growing new colors.
5.What are people doing to protect the reef
A. Building hotels on the islands.
B. Reducing pollution and fighting climate change.
21 世纪教育网(www.21cnjy.com)
中小学教育资源及组卷应用平台
C. Fishing more fish near the reef.
D. Removing the corals to keep them safe.
21 世纪教育网(www.21cnjy.com)
中小学教育资源及组卷应用平台
答案及解析
一、单词拼写
1.wonders解析：one of the +形容词最高级 +复数名词，表示 “最……之一”，wonder
意为 “奇观”，复数形式为 wonders。
2.longest解析：尼罗河是世界上最长的河流，用形容词最高级 longest。
3.protect解析：take action to do sth.意为 “采取行动做某事”，protect意为 “保护”。
4.sand解析：戈壁沙漠是由沙子和岩石覆盖的地区，sand为不可数名词，用原形。
5.aurora解析：aurora lights意为 “极光”，为固定搭配。
6.dry解析：仙人掌可以在少水的干燥环境中生存，dry意为 “干燥的”。
7.covered解析：be covered with意为 “被……覆盖”，为固定短语。
8.vast解析：vast意为 “广阔的”，用来形容太平洋的辽阔。
9.important解析：It is +形容词 + to do sth.意为 “做某事是……的”，important意为
“重要的”。
10.flows解析：主语 the river为第三人称单数，一般现在时中动词用 flows，flow意为
“流动”。
二、单项选择
1.D解析：珠穆朗玛峰是世界上最高的山峰，用形容词最高级，且最高级前需加 the，
故选 the highest。
2.B解析：than是比较级的标志词，large的比较级为 larger。
3.C解析：described by Li Bai为过去分词短语作后置定语，修饰 poem，意为 “被李白
描述的”。
4.A解析：根据答句 “大约 6300公里长”，问句询问长度，用 how long。
5.A解析：主语 the trees为复数，一般现在时中动词用原形 grow。
6.A解析：so +形容词 + that…意为 “如此……以至于……”，为固定结构。
21 世纪教育网(www.21cnjy.com)
中小学教育资源及组卷应用平台
7.B解析：the importance of…意为 “……的重要性”，用名词形式 importance。
8.D解析：大峡谷是被科罗拉多河形成的，用被动语态；且形成发生在过去，用一般
过去时，故选 was created。
9.D解析：I have ever visited表示范围，用形容词最高级，且最高级前需加 the，故选
the most peaceful。
10.A解析：主语 the aurora lights为复数，一般现在时中动词用原形 show。
三、完成句子
1.the highest mountain
解析：表示 “最高的山峰”，用形容词最高级 the highest mountain。
2.the largest rainforest
解析：表示 “最大的雨林”，用形容词最高级 the largest rainforest。
3.try our best
解析：try one’s best to do sth.意为 “尽某人最大努力做某事”。
4.looks amazing
解析：look为系动词，后接形容词 amazing；主语 the aurora 为第三人称单数，用
looks。
5.with very little
解析：with very little water意为 “几乎没有水的”，作后置定语修饰 places。
6.is covered with
解析：be covered with意为 “被……覆盖”，主语为单数，用 is covered with。
7.describes the beauty of
解析：describe意为 “描述”，主语为单数，用 describes；the beauty of…意为 “……的
美丽”。
8.to protect
解析：用不定式 to protect表示目的，意为 “为了保护”。
21 世纪教育网(www.21cnjy.com)
中小学教育资源及组卷应用平台
9.longer than any other
解析：形容词比较级 + than any other +单数名词，表示 “比其他任何……都……”。
10.interesting to learn
解析：It is +形容词 + to do sth.意为 “做某事是……的”，learn about意为 “了解”。
四、补全对话
1.B解析：根据答句 “I think the Grand Canyon is the most amazing one.”可知，问句询问
“你认为最令人惊叹的自然奇观是什么？”，故选 B。
2.A解析：根据答句 “It’s in the United States.”可知，问句询问地点，故选 A。
3.C解析：根据答句 “It’s about 446 kilometers long and up to 29 kilometers wide.”可知，
问句询问大小，故选 C。
4.D解析：根据答句 “Yes, especially at sunrise and sunset.”可知，问句为一般疑问句，
询问是否美丽，故选 D。
5.E解析：根据答句 “Me too! I hope I can visit it one day.”可知，此处表达 “我也想
去”，故选 E。
五、完形填空
1.B解析：canyon与 create为被动关系，用过去分词 created作后置定语，意为 “被科
罗拉多河创造的”。
2.A解析：此处描述峡谷的宽度，用形容词原级 wide，at its widest point意为 “在最宽
处”。
3.D解析：根据语境，在日出日落时岩石看起来最美，用形容词最高级 the most
beautiful。
4.A解析：前后句为因果关系，前果后因，用 because。
5.A解析：主语 these natural wonders为复数，一般现在时中动词用原形 show。
6.C解析：亚马逊雨林是世界上最大的雨林，用形容词最高级 largest，前面有 the，也
可填 the largest，此处选项为 largest。
21 世纪教育网(www.21cnjy.com)
中小学教育资源及组卷应用平台
7.A解析：前后句为并列关系，用 and连接 “阻止这件事”和 “保护森林”。
8.A解析：前后句为条件关系，意为 “如果我们一起努力，就能保护这些地方”，用
if。
六、阅读理解
（A）
1.A解析：根据短文第一段 “It is a salt lake between Israel and Jordan.”可知，死海位于
以色列和约旦之间，故选 A。
2.B解析：根据短文第一段 “it is the lowest point on land on Earth”可知，死海的特别之
处在于它是陆地上的最低点，故选 B。
3.C解析：根据短文第二段 “Because of the high salt content, people can float easily in the
water.”可知，高盐度让人们能轻松漂浮，故选 C。
4.B解析：根据短文第三段 “The mud from the sea is rich in minerals, and people use it to
treat skin problems.”可知，死海的泥被用来治疗皮肤问题，故选 B。
5.B解析：根据短文第三段 “the Dead Sea is shrinking every year”可知，死海正在缩
小，故选 B。
（B)
1.A解析：根据短文第一段 “It is located in the Coral Sea, off the coast of Queensland,
Australia.”可知，大堡礁位于澳大利亚海岸附近，故选 A。
2.B解析：根据短文第一段 “The reef is made up of more than 2,900 individual reefs and
900 islands.”可知，大堡礁由 2900多个珊瑚礁和 900个岛屿组成，故选 B。
3.B解析：根据短文第二段 “Climate change is making the ocean water warmer, which
causes coral bleaching.”可知，海水变暖是大堡礁面临的主要威胁，故选 B。
4.B解析：根据短文第二段 “When corals bleach, they lose their color and die.”可知，珊
瑚白化是指珊瑚失去颜色并死亡，故选 B。
21 世纪教育网(www.21cnjy.com)
中小学教育资源及组卷应用平台
5.B解析：根据短文第三段 “They are trying to reduce pollution, control fishing, and fight
climate change.”可知，人们通过减少污染、对抗气候变化来保护大堡礁，故选 B。
21 世纪教育网(www.21cnjy.com)中小学教育资源及组卷应用平台
(Starting out)
一、单词拼写
1.The Great Barrier Reef is one of the most famous natural w______ in the world.
2.The Nile River is the l______ river in the world.
3.We should take action to p______ the endangered animals.
4.The Gobi Desert is a large area covered with s______ and rocks.
5.The Northern Lights, or a______, are amazing natural light displays in the sky.
6.The cactus is a plant that can live in d______ conditions with little water.
7.The mountain top is c______ with snow all year round.
8.The Pacific Ocean is so v______ that you can’t see its edge from the shore.
9.It is very i______ for us to learn how to protect the natural environment.
10.The river f______ through the valley and finally flows into the sea.
二、单项选择
1.Mount Qomolangma is ______ mountain in the world.
A. high B. higher C. highest D. the highest
2.The Sahara Desert is ______ than any other desert in the world.
A. large B. larger C. largest D. the largest
3.The waterfall in the poem ______ by Li Bai looks very beautiful.
A. describe B. describes C. described D. describing
4.—______ is the Yangtze River
—It’s about 6,300 kilometers long.
A. How long B. How tall C. How far D. How wide
5.The trees in the rainforest ______ very tall to get sunlight.
A. grow B. grows C. growing D. grew
6.The sky is ______ clear that you can see millions of stars at night.
A. so B. such C. too D. very
7.We must learn about the ______ of protecting natural wonders.
A. important B. importance C. importantly D. more important
8.The Grand Canyon ______ by the Colorado River over millions of years.
A. create B. created C. is created D. was created
9.—What do you think of the ocean
—It’s ______ place I have ever visited.
A. peaceful B. more peaceful C. most peaceful D. the most peaceful
1.The aurora lights ______ different colors, like green, pink and purple.
A. show B. shows C. showing D. showed
三、完成句子
根据汉语意思完成英语句子，每空一词。
1.珠穆朗玛峰是世界上最高的山峰。
Mount Qomolangma is ______ ______ ______ in the world.
2.亚马逊雨林是世界上最大的雨林。
The Amazon Rainforest is ______ ______ ______ in the world.
3.我们应该尽最大努力保护自然环境。
We should ______ ______ ______ ______ to protect the natural environment.
4.极光在夜空中看起来非常神奇。
The aurora ______ ______ ______ in the night sky.
5.沙漠里的植物可以在很少水的地方生存。
Plants in the desert can live in places ______ ______ ______ water.
6.这座山被茂密的森林覆盖着。
The mountain ______ ______ ______ thick forests.
7.李白的这首诗描述了壮观的瀑布。
The poem by Li Bai ______ ______ ______ ______ the great waterfall.
8.我们能做什么来保护濒危动物？
What can we do ______ ______ the endangered animals
9.长江比中国的其他任何河流都长。
The Yangtze River is ______ ______ ______ ______ river in China.
10.了解自然奇观是一件很有趣的事情。
It is ______ ______ ______ about natural wonders.
四、补全对话
根据对话内容，从方框中选择合适的句子补全对话，其中有两项多余。
L: Hi, Jack! You’re reading a book about nature, right
J: Yes, Lily. It’s about amazing natural wonders around the world.
L: That sounds cool. 1. ______
J: I think the Grand Canyon is the most amazing one.
L: 2. ______
J: It’s in the United States. It’s one of the largest canyons in the world.
L: 3. ______
J: It’s about 446 kilometers long and up to 29 kilometers wide.
L: Wow, that’s huge! 4. ______
J: Yes, especially at sunrise and sunset. The rocks turn different colors.
L: That must be beautiful. 5. ______
J: Me too! I hope I can visit it one day.
A.Where is it located
B. What do you think is the most amazing natural wonder
C. How big is it
D. Is it very beautiful
E. I really want to go there too.
F. Do you like reading poetry
G. What other wonders do you know
五、完形填空
The world is full of amazing natural wonders. One of the most famous is the Grand Canyon in the US. It is a huge canyon 1. ______ by the Colorado River over millions of years. The canyon is about 446 kilometers long and 29 kilometers 2. ______ at its widest point. It is also very deep, with some parts reaching over 1,800 meters.
The Grand Canyon is famous for its beautiful rocks. The rocks have different colors, from red to brown, and they look 3. ______ at sunrise and sunset. Many people come here to see the amazing views. Some walk along the trails, some take boats on the river, and others just stand at the edge and look down.
Another amazing natural wonder is the Northern Lights. They are bright lights in the sky that can be seen in the northern parts of the world. The lights come in different colors, like green, pink, and purple. They are caused by the sun’s energy hitting the Earth’s atmosphere. Many people travel to places like Norway and Iceland to see the Northern Lights, 4. ______ they are very beautiful.
Nature is full of surprises. These natural wonders 5. ______ us how amazing the world is. We should protect them so that future generations can also enjoy them.
The Amazon Rainforest is another wonder. It is the 6. ______ rainforest in the world. It is home to millions of different plants and animals. The trees there are very tall, some over 50 meters high. The rainforest is very important because it helps clean the air. But people are cutting down the trees, so the rainforest is getting smaller. We must do something to stop this 7. ______ protect the forest.
Many natural wonders are in danger. Pollution, climate change and human activities are harming them. We need to learn about these problems and take action. Even small things, like not wasting water or using less plastic, can help. 8. ______ we work together, we can protect these amazing places for the future.
1.A. create B. created C. creating D. creates
2.A. wide B. wider C. widest D. the widest
3.A. beautiful B. more beautiful C. most beautiful D. the most beautiful
4.A. because B. so C. but D. or
5.A. show B. shows C. showing D. showed
6.A. large B. larger C. largest D. the largest
7.A. and B. but C. or D. so
8.A. If B. Because C. Though D. Unless
六、阅读理解
（A）
The Dead Sea is one of the most interesting natural wonders in the world. It is a salt lake between Israel and Jordan. The Dead Sea is very famous because it is the lowest point on land on Earth, about 430 meters below sea level.
The water in the Dead Sea is very salty—about 10 times saltier than ordinary seawater. Because of the high salt content, people can float easily in the water. You don’t need to know how to swim to float! Many tourists come here to float in the water and enjoy the view.
The Dead Sea is also known for its health benefits. The mud from the sea is rich in minerals, and people use it to treat skin problems. However, the Dead Sea is shrinking every year because of water use in the area. If we don’t do something, it may disappear in the future.
1.Where is the Dead Sea
A. Between Israel and Jordan.
B. Between the US and Canada.
C. Between China and India.
D. Between Norway and Iceland.
2.What is special about the Dead Sea
A. It is the highest lake in the world.
B. It is the lowest point on land on Earth.
C. It is the largest lake in the world.
D. It is the deepest lake in the world.
3.Why can people float easily in the Dead Sea
A. Because the water is very cold.
B. Because the water is very hot.
C. Because the water is very salty.
D. Because the water is very clear.
4.What do people use the mud from the Dead Sea for
A. To make food.
B. To treat skin problems.
C. To build houses.
D. To make clothes.
5.What is happening to the Dead Sea
A. It is getting bigger.
B. It is getting smaller.
C. It is getting warmer.
D. It is getting colder.
（B）
The Great Barrier Reef is the world’s largest coral reef system. It is located in the Coral Sea, off the coast of Queensland, Australia. The reef is made up of more than 2,900 individual reefs and 900 islands. It is so large that it can be seen from outer space!
The Great Barrier Reef is home to thousands of marine species, including fish, turtles, sharks, and dolphins. The colorful corals are the most amazing part of the reef. They provide food and shelter for many sea animals. However, the reef is in danger. Climate change is making the ocean water warmer, which causes coral bleaching. When corals bleach, they lose their color and die. Pollution and overfishing are also harming the reef.
Many scientists and environmental groups are working to protect the Great Barrier Reef. They are trying to reduce pollution, control fishing, and fight climate change. If we don’t act soon, this amazing natural wonder may disappear forever.
1.Where is the Great Barrier Reef located
A. Off the coast of Australia.
B. Off the coast of the US.
C. Off the coast of China.
D. Off the coast of Brazil.
2.What is the Great Barrier Reef made up of
A. Only large islands.
B. More than 2,900 reefs and 900 islands.
C. Only coral reefs.
D. A single large reef.
3.Why is the Great Barrier Reef in danger
A. Because too many tourists visit it.
B. Because the ocean water is getting warmer.
C. Because there are too many fish.
D. Because the reef is getting too big.
4.What is coral bleaching
A. Corals growing bigger.
B. Corals changing color to white and dying.
C. Corals moving to other places.
D. Corals growing new colors.
5.What are people doing to protect the reef
A. Building hotels on the islands.
B. Reducing pollution and fighting climate change.
C. Fishing more fish near the reef.
D. Removing the corals to keep them safe.
答案及解析
一、单词拼写
1.wonders解析：one of the + 形容词最高级 + 复数名词，表示 “最…… 之一”，wonder 意为 “奇观”，复数形式为 wonders。
2.longest解析：尼罗河是世界上最长的河流，用形容词最高级 longest。
3.protect解析：take action to do sth. 意为 “采取行动做某事”，protect 意为 “保护”。
4.sand解析：戈壁沙漠是由沙子和岩石覆盖的地区，sand 为不可数名词，用原形。
5.aurora解析：aurora lights 意为 “极光”，为固定搭配。
6.dry解析：仙人掌可以在少水的干燥环境中生存，dry 意为 “干燥的”。
7.covered解析：be covered with 意为 “被…… 覆盖”，为固定短语。
8.vast解析：vast 意为 “广阔的”，用来形容太平洋的辽阔。
9.important解析：It is + 形容词 + to do sth. 意为 “做某事是…… 的”，important 意为 “重要的”。
10.flows解析：主语 the river 为第三人称单数，一般现在时中动词用 flows，flow 意为 “流动”。
二、单项选择
1.D解析：珠穆朗玛峰是世界上最高的山峰，用形容词最高级，且最高级前需加 the，故选 the highest。
2.B解析：than 是比较级的标志词，large 的比较级为 larger。
3.C解析：described by Li Bai 为过去分词短语作后置定语，修饰 poem，意为 “被李白描述的”。
4.A解析：根据答句 “大约 6300 公里长”，问句询问长度，用 how long。
5.A解析：主语 the trees 为复数，一般现在时中动词用原形 grow。
6.A解析：so + 形容词 + that… 意为 “如此…… 以至于……”，为固定结构。
7.B解析：the importance of… 意为 “…… 的重要性”，用名词形式 importance。
8.D解析：大峡谷是被科罗拉多河形成的，用被动语态；且形成发生在过去，用一般过去时，故选 was created。
9.D解析：I have ever visited 表示范围，用形容词最高级，且最高级前需加 the，故选 the most peaceful。
10.A解析：主语 the aurora lights 为复数，一般现在时中动词用原形 show。
三、完成句子
1.the highest mountain
解析：表示 “最高的山峰”，用形容词最高级 the highest mountain。
2.the largest rainforest
解析：表示 “最大的雨林”，用形容词最高级 the largest rainforest。
3.try our best
解析：try one’s best to do sth. 意为 “尽某人最大努力做某事”。
4.looks amazing
解析：look 为系动词，后接形容词 amazing；主语 the aurora 为第三人称单数，用 looks。
5.with very little
解析：with very little water 意为 “几乎没有水的”，作后置定语修饰 places。
6.is covered with
解析：be covered with 意为 “被…… 覆盖”，主语为单数，用 is covered with。
7.describes the beauty of
解析：describe 意为 “描述”，主语为单数，用 describes；the beauty of… 意为 “…… 的美丽”。
8.to protect
解析：用不定式 to protect 表示目的，意为 “为了保护”。
9.longer than any other
解析：形容词比较级 + than any other + 单数名词，表示 “比其他任何…… 都……”。
10.interesting to learn
解析：It is + 形容词 + to do sth. 意为 “做某事是…… 的”，learn about 意为 “了解”。
四、补全对话
1.B解析：根据答句 “I think the Grand Canyon is the most amazing one.” 可知，问句询问 “你认为最令人惊叹的自然奇观是什么？”，故选 B。
2.A解析：根据答句 “It’s in the United States.” 可知，问句询问地点，故选 A。
3.C解析：根据答句 “It’s about 446 kilometers long and up to 29 kilometers wide.” 可知，问句询问大小，故选 C。
4.D解析：根据答句 “Yes, especially at sunrise and sunset.” 可知，问句为一般疑问句，询问是否美丽，故选 D。
5.E解析：根据答句 “Me too! I hope I can visit it one day.” 可知，此处表达 “我也想去”，故选 E。
五、完形填空
1.B解析：canyon 与 create 为被动关系，用过去分词 created 作后置定语，意为 “被科罗拉多河创造的”。
2.A解析：此处描述峡谷的宽度，用形容词原级 wide，at its widest point 意为 “在最宽处”。
3.D解析：根据语境，在日出日落时岩石看起来最美，用形容词最高级 the most beautiful。
4.A解析：前后句为因果关系，前果后因，用 because。
5.A解析：主语 these natural wonders 为复数，一般现在时中动词用原形 show。
6.C解析：亚马逊雨林是世界上最大的雨林，用形容词最高级 largest，前面有 the，也可填 the largest，此处选项为 largest。
7.A解析：前后句为并列关系，用 and 连接 “阻止这件事” 和 “保护森林”。
8.A解析：前后句为条件关系，意为 “如果我们一起努力，就能保护这些地方”，用 if。
六、阅读理解
（A）
1.A解析：根据短文第一段 “It is a salt lake between Israel and Jordan.” 可知，死海位于以色列和约旦之间，故选 A。
2.B解析：根据短文第一段 “it is the lowest point on land on Earth” 可知，死海的特别之处在于它是陆地上的最低点，故选 B。
3.C解析：根据短文第二段 “Because of the high salt content, people can float easily in the water.” 可知，高盐度让人们能轻松漂浮，故选 C。
4.B解析：根据短文第三段 “The mud from the sea is rich in minerals, and people use it to treat skin problems.” 可知，死海的泥被用来治疗皮肤问题，故选 B。
5.B解析：根据短文第三段 “the Dead Sea is shrinking every year” 可知，死海正在缩小，故选 B。
（B)
1.A解析：根据短文第一段 “It is located in the Coral Sea, off the coast of Queensland, Australia.” 可知，大堡礁位于澳大利亚海岸附近，故选 A。
2.B解析：根据短文第一段 “The reef is made up of more than 2,900 individual reefs and 900 islands.” 可知，大堡礁由 2900 多个珊瑚礁和 900 个岛屿组成，故选 B。
3.B解析：根据短文第二段 “Climate change is making the ocean water warmer, which causes coral bleaching.” 可知，海水变暖是大堡礁面临的主要威胁，故选 B。
4.B解析：根据短文第二段 “When corals bleach, they lose their color and die.” 可知，珊瑚白化是指珊瑚失去颜色并死亡，故选 B。
5.B解析：根据短文第三段 “They are trying to reduce pollution, control fishing, and fight climate change.” 可知，人们通过减少污染、对抗气候变化来保护大堡礁，故选 B。
21世纪教育网(www.21cnjy.com)

展开更多......

收起↑