资源简介

Unit 3 Trees and us
知识点梳理
一、词形转换
1.silent adj.安静的，沉默的 silence n.寂静，无声；沉默 silently adv.默默地；静静地 2.create v.创造，创建；设计 creative adj.创造(性)的，创作的 creation n.创造，创建；作品 creator n.创造者 3.environment n. 自然环境，生态环境 environmental adj. 自然环境的 environmentally adv.有关环境方面 4.convenient adj.方便的 conveniently adv.方便地 convenience n.方便，便利 5.wood n.木材，木料，木头 wooden adj.木制的；呆板的 6.treat v.对待，看待；治疗 treatment n.对待；治疗 7.communicate v.传递信息，通讯 communication n.表达，交流，交际 8.product n.产品，制品 production n.生产，制造 produce v.引起；生产 producer n.造成者，生产者 9.stick n.木棍；v.粘贴 sticker n.贴纸 10.knowledge n.知识，学问 know v.知道；认识到，懂得 knowledgeable adj.知识渊博的 11.translation n.译文；译本 translate v.翻译 12.dig v.挖；掘dug-dug 13.spread v.传播spread-spread
二、重点短语
1.take in吸收；摄入 2.greenhouse gases温室气体 3.to begin with首先；第一点 4.come from 来自=be from 5.look around环视；四下察看 6.be made of由…制成(物理变化) be made from由…制成(化学变化) be made in产自某地 be made up of由…组成 7.for example例如 8.communicate with与….沟通 9.call on 号召；动员；要求 10.according to据. ;按 …. (所报道) 11.by accident偶然；意外地 12.provide sb.with sth.为某人提供某物 =provide sth for sb. 13.on Tree Planting Day植树节那天 14.share sth.with sb.与某人分享某事 15.all living things所有生物 16.be good for对…有益 17.a clean environment一个洁净的环境 18.make our lives more convenient 让我们的生活更方便 19.a lot of furniture许多家具 20.make tea制茶 21.in a kind way以友善的方式 22.cut down砍倒 23.call for help(p42)寻求帮助 24.dig a deep hole(p44)挖一个深坑 25.so far(p46)迄今为止 26.spread across the country(p46)传遍全国 27.date back to(p46)追溯到
三、重点句型(读背记)
1.What else do trees do for us 树木还能为我们做什么 2.We need to do more to protect trees and save our planet. 我们需要做更多的事情来保护树木和拯救我们的星球。 3.We can't imagine a world without them.我们无法想象一个没有它们的世界。 4.Trees also make our daily lives easier and more convenient.(p39) 树木也使我们的日常生活更容易，更方便。 5.Trees can ask each other for help when bad things happen to them. 当不好的事情发生在树木身上时，它们可以互相寻求帮助。
提升训练
一、单项选择
1．—That ________ so good. What is it, Jack
—I ________ the chicken soup. Do you want to try
A．is smelling; am making B．smells; make
C．smells; am making D．is smelling; make
2．— We can’t live without trees. They make our lives ________.
— I agree. We should stop ________ trees.
A．convenient; to cut down B．convenience; to cut down
C．convenient; cutting down D．convenience; cutting down
3．We should protect trees, because they can take ________ harmful gases.
A．in B．on C．from D．with
4．—Can you tell me something about those chairs
—Of course. They are ________ hard woods.
A．made from B．made of C．made into D．made in
5．We should ________ our friends with kindness.
A．treat B．meet C．find D．create
6．________, we need to prepare all the materials for the project.
A．To begin with B．In the middle C．At last D．Above all
7．Trees can ________ us ________ fruit. They are very useful and important in our daily lives.
A．protect; with B．provide; with C．protect; for D．provide; for
8．Tea, the most popular drink in the world, was discovered ________ in China.
A．by hand B．by mistake C．by accident D．by means
9．—When did Cangjie create (创造) the first Chinese ________
—More than 4,000 years ago.
A．characters B．furniture C．culture D．symbol
10．—Could I __________ a dictionary from you, David
—Sorry. I __________ it to my cousin yesterday.
A．lend; borrowed B．borrow; lend C．lend; lent D．borrow; lent
二、完成句子
11．你可以在图书馆里一次借3本书。
You can three books at a time in the library.
12．他吸入了有害气体，人们把他送进了医院。
He gas and people took him to hospital.
13．那个孩子来自一个小村庄。
That child a small village.
14．实际上， 这座房子是由垃圾制成的。
, this house is made of rubbish.
15．经常和父母交流是很重要的。
It’s very important to your parents often.
三、短文填空
语法填空
Trees are everywhere around us, but we often don’t care about them. These 16 (silence) friends are very important for all the living things on Earth. Forests are full 17 different animals, insects and plants. They are like homes for them.
Trees are like air cleaners in nature. They take in bad greenhouse gases, like carbon dioxide, and give out oxygen. So they help make the air 18 (clean) for everyone on the earth.
Trees are important for nature, and they also make our 19 (day) lives better and 20 (convenient). Many things we use every day, like paper and pencils, and most of the furniture in our homes, come from trees. Also, trees give us lots of yummy fruits and nice drinks. For example, we can make tea with the 21 (leaf) of tea trees.
22 (sad), people are hurting trees. People 23 (cut) down a lot of trees around the world, and air and water pollution is making things worse for trees. These problems are really bad for 24 (we) environment.
It’s time for us to do something. We must work harder 25 (protect) trees. Trees are important for our lives now and the future of our planet.
四、完形填空
National Arbor Day is a holiday to encourage (鼓励) people to plant trees. Planting a tree can help the environment and make your garden 26 . Trees 27 oxygen for us. We need it to 28 . Without plants, we can’t imagine how the 29 world will be. Do you know how to plant a tree
★Choose a good 30 for your tree. Make sure that your tree will not be too large or tall for the place.
★Plant your tree on a cloudy, 31 and humid (潮湿的) day. This will stop the tree’s 32 from drying out.
★Dig a hole. It should be twice as wide and twice as deep as the tree’s roots.
★Place the roots in the hole 33 , and then fill the hole with soil (土壤).
★ 34 your tree well, using 3 to 5 gallons of water. 35 your tree after you plant it. Ask your parents to take a picture of you and your tree every year. You will be amazed at how quickly it grows in years to come.
26．A．full B．hard C．dirty D．beautiful
27．A．protect B．produce C．cook D．put
28．A．breathe B．jump C．run D．sing
29．A．natural B．full C．dark D．sweet
30．A．town B．country C．family D．place
31．A．dry B．cool C．hot D．windy
32．A．roots B．stems C．flowers D．fruits
33．A．sadly B．carefully C．importantly D．hardly
34．A．Mix B．Rise C．Collect D．Water
35．A．Look for B．Look at C．Look after D．Look up
五、语法选择
Trees are important. They can provide animals with homes. Lots of products, like pencils, are made 36 trees. However, they can give 37 these only if they are alive. So people have to do something to keep them 38 .
Therefore, people spend much time and money 39 trees. They found that the tree would grow best in a climate (气候) with 40 sunlight and rain, and little sunlight or rain would stop the growth of a tree. We can know the change of climate by reading the pattern of rings in a tree trunk. You should count the rings of a tree trunk 41 the outside to the inside. If 42 tenth ring is far from the other rings, there must 43 lots of sunlight and rain. If the rings are close to each other, then the climate is bad. Study like this is not only for the history of weather, but also for the history of humans. You can find only sand now in one place of New Mexico. However, there were millions of people in the past. They 44 suddenly. Why A group of scientists studied patterns of dead tree rings there, and they found that people went away because they destroyed (破坏) all the trees 45 and build houses.
36．A．in B．from C．of D．with
37．A．our B．ours C．we D．us
38．A．health B．healthy C．luck D．lucky
39．A．to make B．making C．to study D．studying
40．A．little B．few C．many D．much
41．A．from B．between C．for D．as
42．A．an B．the C．/ D．a
43．A．am B．is C．are D．be
44．A．are leaving B．leave C．will leave D．left
45．A．burning B．burn C．to burn D．to burning
六、阅读理解
Trees can keep a record of Earth’s climate for a very long time. In fact, trees can live for hundreds—and sometimes even thousands of years!
If you see a stump (树桩), you may find that the top of the stump has many rings. These rings can tell us how old the tree is, and what the weather was like during each year of the tree’s life.
In most places, daily weather records have only been kept for the past 100 to 150 years. So, scientists can use trees to learn about the climate hundreds to thousands of years ago.
46．According to the poster, which part of a tree can record the climate
A．Its rings. B．Its leaves. C．Its roots. D．Its branches.
47．How old is the tree in the poster
A．About 14 years old. B．About 17 years old.
C．About 19 years old. D．About 22 years old.
48．The rings growing in spring or early summer are usually ________ rings.
A．dark-coloured and narrow B．light-coloured and wide
C．dark-coloured and wide D．light-coloured and narrow
49．Which tree lives in a warmer and wetter place
A． B．
C． D．
50．Where might you see this poster
A．In someone’s back yard. B．At a bus station.
C．On a website about the climate. D．In a report about a new study.
Long long ago, there was a beautiful place with thousands of trees. Around those trees was the home of many lions. Those lions killed other animals and ate them. The bodies of the animals always made the air bad, and many trees thought the place was not fit to live in any more.
One day, two trees were talking. The first tree said, “These lions are polluting our home. We have to save our home from them. Let’s drive them away.”
“Yes,” agreed the other tree.
An old tree was listening to them. He said, “They may be polluting the air. But they are keeping us safe. No people are brave enough to come into our home.”
But his words did not change the idea of the two trees. They finally did that. That evening, the two trees started shaking very hard. “We will make the lions afraid, so they will leave our home and never come back again,” the two trees said and laughed.
All the other trees joined them. “Don’t do that,” shouted the old tree. But the other trees did not listen. They made great noises. “Something horrible is happening. Let’s run away,” all the animals said.
The two trees were happy. “Huh! Now we can enjoy some fresh air,” they said. But they were only happy for a few days. One day a man came and started cutting down the trees. “Now I don’t need to be afraid of the lions,” he said to himself. Soon there were other people. “Now all of us will die,” said the old tree.“How stupid we are. We should listen to this old tree,” the other trees said sadly. A few minutes later, the two trees were cut down.
51．Many trees thought their place was not fit to live in, because ________.
A．the lions were always eating the other animals.
B．the animals living there were polluting the air
C．some people often came and cut down the trees
D．the dead bodies of the animals made the air smell bad
52．The underlined word “drive” in Paragraph 2 means “________” in Chinese.
A．带领 B．驾驶 C．驱赶 D．运送
53．The old tree thought those lions ________.
A．were polluting the air and should be driven away
B．stopped people from coming and cutting down the trees
C．would kill all the other animals and then run away
D．were not doing their best to protect the trees
54．Which of the following is NOT true according to the story
A．The lions were afraid and ran away
B．All the trees knew from the beginning that the lions were helpful.
C．Some people came and cut down trees after the lions ran away.
D．The two trees were cut down by people.
55．What would probably happen at the end of the story
A．All the trees would be cut down by people.
B．The lions would come back and people wouldn’t come in.
C．The trees would shake hard so that people were afraid to come in.
D．The trees would enjoy fresher air without the lions.
七、任务型阅读
The Amazon rainforest in South America is the largest rainforest in the world. It covers five and a half million square kilometres of the Amazon Basin and spreads across nine countries.
The Amazon rainforest is very important because it is home to thousands of animals, birds and insects.
However, people are destroying the area by cutting down many of the trees. This is called “deforestation”. Many living things lose their homes because of deforestation. As a result, the number of kinds of animals, birds, insects and trees in the world is decreasing (减少).
We must do our best to protect the Amazon rainforest.
56．How many countries does the Amazon rainforest spread across
57．Why is the Amazon rainforest very important
58．How are people destroying the Amazon rainforest
59．Is the number of kinds of animals in the world falling
试卷第1页，共3页
试卷第1页，共3页
《Unit 3 Trees and us 知识点梳理 提升训练 -- 沪教版2024 七年级英语下册》参考答案
题号 1 2 3 4 5 6 7 8 9 10
答案 C C A B A A B C A D
题号 26 27 28 29 30 31 32 33 34 35
答案 D B A A D B A B D C
题号 36 37 38 39 40 41 42 43 44 45
答案 C D B D D A B D D C
题号 46 47 48 49 50 51 52 53 54 55
答案 A B B D C D C B B A
1．C
【详解】句意：——闻起来真香。是什么，Jack？——我正在做鸡汤。你想试一试吗？
考查动词时态。smell闻起来，系动词，无现在进行时结构，故第一空填smells。根据“the chicken soup. Do you want to try”可知，正在做鸡汤，应用现在进行时结构，故选C。
2．C
【详解】句意：——没有树我们就不能生活。他们使我们的生活方便。——我同意。我们应该停止砍伐树木。
考查形容词的用法以及非谓语动词。convenient方便的；convenience方便。make sth+形容词，表示“使某物……”，形容词作宾补，排除B和D选项。stop doing sth停止正在做的事情；stop to do sth停下来去做另外一件事。前文描述树木的重要性，所以此处是指停止正在砍伐树木的这个动作，应填动名词cutting down，故选C。
3．A
【详解】句意：我们应该保护树木，因为他们可以吸收有害气体。
考查介词辨析和动词短语。in在……里；on在……上；from来自；with和。根据“harmful gases”可知，此处是吸收有害气体，take in“吸收”。故选A。
4．B
【详解】句意：——你能告诉我一些关于那些椅子的事情吗？——当然。它们是由硬木制成的。
考查动词短语。be made from由……制成，看不出原材料；be made of由……制成，看得出原材料；be made into被制成；be made in在某地生产。根据“those chairs”及“They are ... hard woods.”可知，是指那些椅子是由硬木制成的，看得出原材料，用be made of。故选B。
5．A
【详解】句意：我们应该友善地对待我们的朋友。
考查动词辨析。treat对待；meet遇见；find找到；create创造。结合句意可知，此处表示“对待朋友应该友善”。故选A。
6．A
【详解】句意：首先，我们需要为这个项目准备所有材料。
考查介词短语。To begin with“首先”，放在句首，常用来引出首先要做的事情或陈述的观点；In the middle在中间；At last最后；Above all最重要的是。根据语境可知，此处表示“首先”，故选A。
7．B
【详解】句意：树木可以为我们提供水果。它们在我们的日常生活中非常有用和重要。
考查动词短语辨析。根据句意可知，这里要表达“树木可以为我们提供水果”，“provide sb. with sth.= provide sth. for sb.”意为“为某人提供某物”，题干中“人在前物在后”，故选B。
8．C
【详解】句意：世界上最受欢迎的饮料——茶，是在中国偶然发现的。
考查介词短语。by hand手工的；by mistake错误地；by accident意外地；by means通过方式。根据“Tea, the most popular drink in the world, was discovered…in China.”可知，茶是偶然发现的，by accident表示“意外地”符合语境。故选C。
9．A
【详解】句意：——仓颉什么时候创造了最早的汉字？——大约4000多年前。
考查名词辨析。characters文字；字符；furniture家具；culture文化；symbol象征；符号。根据“When did Cangjie create (创造) the first Chinese… ”可知，题目问的是仓颉创造了中国的什么，characters表示“文字”符合语境，故选A。
10．D
【详解】句意：——David，我可以从你那借一本字典吗？——抱歉。我昨天把它借给了我的表妹。
考查动词以及时态用法。lend借出；borrow借入。根据“a dictionary from you”可知，此处指“从你那借一本字典”，用borrow sth from sb表示“从某人借某物”；根据“it to my cousin”可知，此处指“把它借给了我的表妹”，用lend sth to sb表示“把某物借给某人”，根据“yesterday”可知，第二句用一般过去时，所以动词lend使用过去式lent。故选D。
11．borrow
【详解】对比所给中英文可知，设空处为“借”；borrow“借”，根据空前的情态动词“can”可知，此处用动词原形。故填borrow。
12．took in harmful
【详解】对照中英文可知，缺少“吸入了有害”。根据“吸入了”可知，此处时态为一般过去时。“吸入”用take in，位于主语He后，take用过去式took；“有害”修饰名词gas，用形容词“有害的”harmful。“吸入了有害的”用took in harmful。故填took in harmful。
13．comes from
【详解】根据中英文对照，空格处缺“来自”的英文表达。come from“来自”，动词短语，句子时态为一般现在时，主语为That child，谓语动词用三单形式，故填comes from。
14．In fact
【详解】根据题干可知，空处缺少 “实际上”，应用短语in fact表示，句首单词首字母要大写。故填In fact。
15．communicate with
【详解】对照中英文可知，缺少“和……交流”，用communicate with。It is+形容词+to do sth“做某事是……的”，空处动词用原形。故填communicate with。
16．silent 17．of 18．clean 19．daily 20．more convenient 21．leaves 22．Sadly 23．are cutting 24．our 25．to protect
【导语】本文是一篇说明文，主要讲述了树木的重要性，包括对地球生物的重要性、对日常生活的改善，同时指出人们砍伐树木以及环境污染对树木造成的伤害，呼吁人们要更加努力地保护树木。
16．句意：这些安静的朋友对地球上所有的生物都非常重要。根据“Trees are everywhere around us, but we often don’t care about them.”可知，这里描述树木的特点，silence是名词，“silent”是其形容词，意为“安静的”，修饰名词“friends”，符合语境。故填silent。
17．句意：森林里充满了不同的动物、昆虫和植物。“be full of”意为“充满”，所以此处应用“of”。故填of。
18．句意：所以它们有助于让地球上的每个人都能呼吸到清洁的空气。“make sth. + 形容词”表示“使某物处于某种状态”，“clean”本身就有“干净的，清洁的”意思，说明树木能让空气保持清洁的状态。故填clean。
19．句意：树木对自然很重要，它们也让我们的日常生活更好、更方便。“day”是名词，“daily”是形容词，意为“日常的”，“daily lives”表示“日常生活”，符合语境。故填daily。
20．句意：树木对自然很重要，它们也让我们的日常生活更好、更方便。“better”提示这里要用比较级，“convenient”是多音节形容词，其比较级是“more convenient”，表示“更方便的”。故填more convenient。
21．句意：例如，我们可以用茶树的叶子泡茶。“leaf”是可数名词，这里指茶树的所有叶子，要用复数形式，“leaf”的复数是“leaves”。故填leaves。
22．句意：可悲的是，人们正在伤害树木。sad“伤心的”，形容词，“sadly”是副词，意为“可悲地，伤心地”，在句首作状语，修饰整个句子，符合语境。故填Sadly。
23．句意：全世界的人们正在砍伐大量树木，并且空气和水污染正让树木的情况变得更糟。根据“and air and water pollution is making things worse for trees”可知，这里用现在进行时，表示正在进行的动作，其结构是“be + 动词的现在分词”，主语“People”是复数，“cut”的现在分词是“cutting”，所以填“are cutting”。故填are cutting。
24．句意：这些问题真的对我们的环境有害。“environment”是名词，前面要用形容词性物主代词修饰，“we”是人称代词主格，其形容词性物主代词是“our”，表示“我们的”。故填our。
25．句意：我们必须更加努力地保护树木。“work hard to do sth.”意为“努力做某事”，所以此处用动词不定式“to protect”作目的状语。故填to protect。
26．D 27．B 28．A 29．A 30．D 31．B 32．A 33．B 34．D 35．C
【导语】本文主要论述了种树的好处，并教读者如何种树。
26．句意：种树可以帮助环境，使你的花园美丽。
full满的；hard硬的；dirty脏的；beautiful美丽的。根据“Planting a tree can help the environment and make your garden...”可知，此处指种树对花园有绿化作用， 会使花园变漂亮。故选D。
27．句意：树木为我们生产氧气。
protect保护；produce生产；cook烹饪；put放。根据“Trees... oxygen for us.”并结合常识可知，树可以生产氧气。故选B。
28．句意：我们需要它来呼吸。
breathe呼吸；jump跳；run跑；sing唱。根据“Trees... oxygen for us.”可知，我们需要氧气来呼吸。故选A。
29．句意：没有植物，我们无法想象自然界会是什么样子。
natural自然的；full满的；dark黑暗的；sweet甜的。根据“Without plants”可知，此处表示自然界的世界。故选A。
30．句意：为你的树选择一个好地方。
town城镇；country国家；family家庭；place地方。根据“Make sure that your tree will not be too large or tall for the place.”可知，此处指要挑选一个好地方。故洗D。
31．句意：在一个阴天、凉爽且潮湿的日子里种下你的树。
dry干燥的；cool凉爽的；hot热的；windy有风的。根据“This will stop the tree’s... from drying out.”可知，此处指阴天、凉爽且潮湿的天气。故选B。
32．句意：这将防止树的根部变干。
roots根；stems茎；flowers花；fruits果实。根据“This will stop the tree’s... from drying out.”可知，此处指防止树根变干。故选A。
33．句意：把根小心地放进洞里，然后把洞里填满土壤。
sadly伤心地；carefully小心地；importantly重要地；hardly几乎不。根据“Place the roots in the hole...”可知，此处指要把根小心地放进去。故洗 B。
34．句意：用3到5加仑的水给你的树浇足水。
Mix混合；Rise上升；Collect收集；Water浇水。根据“using 3 to 5 gallons of water”可知，此处指给树浇足水。故选D。
35．句意：在你种好以后照顾好你的树。
Look for寻找；Look at看着；Look after照顾；Look up査找。根据“after you plant it”可知，种树之后还要好好照顾树苗。故选C。
36．C 37．D 38．B 39．D 40．D 41．A 42．B 43．D 44．D 45．C
【导语】本文主要介绍了树木年轮的重要性。
36．句意：许多产品，例如铅笔是由树木制成的。
in在……里面；from来自；of属于……的；with和。根据“Lots of products, like pencils are made…trees.”可知，此处为固定短语be made of“由……制成（原材料显而易见）”。故选C。
37．句意：但是，只有在它们还活着的情况下，它们才能给我们这些。
our我们的，形容词性物主代词；ours我们的，名词性物主代词；we我们，主格；us我们，宾格。根据“However, they can give…these only if they are alive.”可知，位于动词后应用人称代词宾格us。故选D。
38．句意：因此，人们必须做些事情来保持它们健康。
health健康，名词；healthy健康的，形容词；luck幸运，名词；lucky幸运的，形容词。根据“So people have to do something to keep them…．”可知，树对人类很重要，因此人类要保持树的健康，应用形容词healthy作宾语补足语。故选B。
39．句意：因此，人们花了很多时间和金钱来研究树木。
to make制造，动词不定式；making制造，现在分词；to study学习，动词不定式；studying学习，动名词。根据“Therefore, people spend much time and money…trees.”可知，树很重要，所以需要花时间去研究学习，此处为固定短语spend time doing sth“花时间做某事”，应用study的动名词形式。故选D。
40．句意：他们发现，树在阳光和雨水充足的气候下生长得最好，而很少的阳光或雨水会阻止树的生长。
little少的，修饰不可数名词；few少的，修饰复数名词；many很多，修饰复数名词；much很多，修饰不可数名词。根据“They found that the tree would grow best in a climate (气候) with…sunlight and rain, and little sunlight or rain would stop the growth of a tree.”可知，树需要很多阳光和雨水，此处修饰不可数名词sunlight应用much。故选D。
41．句意：你应该从外到内数树干的年轮。
from从；between在……之间；for为了；as作为。根据“You should count the rings of a tree trunk…the outside to the inside.”可知，此处为固定搭配from…to…表示“从外到内”。故选A。
42．句意：如果第十圈远离其他年轮，则一定有很多阳光和雨。
an一个，用于修饰以元音音素开头的词，表泛指；the这个/那个，定冠词，表特指；/零冠词；a一个，用于修饰以辅音音素开头的词，表泛指。根据“If…tenth ring is far from the other rings, there must…lots of sunlight and rain.”可知，此处特指第十圈树木年轮，应用定冠词the修饰。故选B。
43．句意：如果第十圈远离其他年轮，则一定有很多阳光和雨。
am是，主语为I；is是，主语为第三人称单数；are是，主语为第一、三人称复数或第二人称；be是，动词原形。根据“If…tenth ring is far from the other rings, there must…lots of sunlight and rain.”可知，位于情态动词must后用动词原形。故选D。
44．句意：他们突然离开了。
are leaving离开，现在进行时；leave离开，动词原形；will leave离开，一般将来时；left离开，过去式。根据“You can find only sand now in one place of New Mexico. However, there were millions of people in the past. They…suddenly.”可知，时态为一般过去时，用动词过去式。故选D。
45．句意：一群科学家在那里研究了枯树的年轮模式，他们发现人们离开是因为他们砍伐了所有的树木来燃烧和建造房屋。
burning燃烧，动名词；burn燃烧，动词原形；to burn燃烧，动词不定式；to burning燃烧。根据“because they destroyed (破坏) all the trees…and build houses.”可知，此处是指他们摧毁树木是为了拿来燃烧，应用动词不定式表目的。故选C。
46．A 47．B 48．B 49．D 50．C
【导语】本文介绍树的年轮记录天气变化这一知识。
46．细节理解题。根据“These rings can tell us how old the tree is, and what the weather was like during each year of the tree’s life.”可知，树的年轮记录着它生活时期天气情况。故选A。
47．细节理解题。根据“These rings can tell us how old the tree is,”可知，树的年轮可以记录它有多少岁。根据图片可知，这棵树有17圈年轮，说明这棵树生活了17年。故选B。
48．细节理解题。根据“The light-colored rings are wood that grew in the spring and early summer, while the dark rings are wood that grew in the late summer and fall.”可知，浅色环是春天和初夏生长的树木。故选B。
49．推理判断题。根据“Tree rings usually grow wider in warm, wet years and are thinner in years when it is cold and dry.”可知，年轮通常在温暖潮湿的年份长得宽，而在寒冷干燥的年份则长得薄。年轮比较宽的第四图。说明图片D的树生活在温暖，湿地。故选D。
50．推理判断题。通读全文可知，这篇文章主要介绍树的年轮和天气的关系。故选C。
51．D 52．C 53．B 54．B 55．A
【导语】本文主要讲述了两棵树没有听老树的劝告，赶走了所有动物，不久人们就跑到这片树林，开始砍伐树木，这时候才知道后悔当初应该听老树的劝告。
51．细节理解题。根据“Those lions killed other animals and ate them. The bodies of the animals always made the air bad, and many trees thought the place was not fit to live in any more”可知，因为死去的动物尸体让空气闻起来很臭，故选D。
52．词义猜测题。根据“We have to save our home from them. Let’s drive them away.”可知，为了拯救家园，想把狮子赶出去，所以drive表示“驱赶”，故选C。
53．细节理解题。根据“They may be polluting the air. But they are keeping us safe. No people are brave enough to come into our home”可知，老树认为虽然狮子破坏了空气，但是也让树林安全，阻止人们来砍伐树木，故选B。
54．推理判断题。根据“We have to save our home from them. Let’s drive them away”以及“All the other trees joined them”可知，起初并不是所有的树木都知道狮子对树林是有益的，B表述错误，故选B。
55．推理判断题。根据“A few minutes later, the two trees were cut down”可推断，接下来其它的树木也被人们砍倒了，故选A。
56．Nine. 57．Because it is home to thousands of animals, birds and insects. 58．By cutting down many of the trees. 59．Yes, it is.
【导语】本文是一篇说明文。文章主要讲述了南美亚马逊雨林，全球最大的雨林，占地550万平方公里，横跨九国，生物多样，正遭受砍伐威胁，导致物种减少，亟需保护。
56．根据“It covers five and a half million square kilometres of the Amazon Basin and spreads across nine countries.”可知，亚马逊雨林分布在九个国家。故填Nine。
57．根据“The Amazon rainforest is very important because it is home to thousands of animals, birds and insects.”可知，亚马逊雨林非常重要是因为它是成千上万动物、鸟类和昆虫的家园。故填Because it is home to thousands of animals, birds and insects.
58．根据“However, people are destroying the area by cutting down many of the trees.”可知，人们砍伐了许多树木破坏了亚马逊雨林。故填By cutting down many of the trees.
59．根据“As a result, the number of kinds of animals, birds, insects and trees in the world is decreasing.”可知，世界上动物的种类在减少。故填Yes, it is.
答案第1页，共2页
答案第1页，共2页

展开更多......

收起↑