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Unit 7 What's the highest mountain in the world?
Section B 1a-1d 分层练习
基础达标
一、根据首字母填空.
1．The machine w________ about 5 tons.
【答案】weighs
【详解】句意：这台机器重约5吨。缺少谓语，根据“about 5 tons”可知说的是重量；根据
首字母提示可知是“称重”，即weigh；主语the machine是第三人称单数，故填weighs。
2．The panda eats about 10 k________ of bamboo a day.
【答案】kilos
【详解】句意：熊猫每天吃大约10公斤竹子。此处修饰bamboo，根据10可知是量词单位，
有首字母k可知是”10公斤“，用复数形式。故填kilos。
3．My father is two times t________ than my younger sister.
【答案】taller
【详解】句意：我父亲比我妹妹高两倍。根据than可知是比较级；根据主语my father和
my sister可知是高两倍。故填taller。
4．My mother told me that I was only 50 cm long at b________.
【答案】birth
【详解】句意：我妈妈告诉我，我出生时只有50厘米长。根据首字母以及“I was only 50
cm long”可知是指出生时。at birth“出生”，是固定搭配。故填birth。
5．Look! That a________ panda is looking after her baby pandas.
【答案】adult
【详解】句意：你看！那只成年熊猫正在照顾她的熊猫宝宝。根据baby pandas可知照顾熊
猫宝宝的应是成年熊猫，即adult“成年的”。故填adult。
二、完成句子（每空一词）.
6．这棵树比那棵树高两米。
This tree is two ________ ________ than that one.
【答案】 meters taller
【详解】根据中英文可知，“比……高两米”可用two meters taller than...表示，对照所缺
空，故填meters；taller。
7．这条河的长度是那条河的五倍。
The river is ________ ________ ________ ________ ________ that one.
【答案】 five times as long as
【详解】对照中英文可知，该句应用比较等级句型“A is+倍数+as+形容词原级+as B”表示，
五倍：five times；长：long，形容词原级；结合句型结构，故填five；times；as；long；as。
8．大象比熊猫重许多倍。
An elephant weighs ________ ________ ________ than a panda.
【答案】 many times more
【详解】对照中英文可知，空处应填“许多倍”的英文，可用many times more来表达。故
填many；times；more。
9．汤姆比迈克吃得少得多。
Tom eats ________ ________ than Mike.
【答案】 much less
【详解】中英文对照可知，空处应填“少得多”的英文；由“吃得少”可知，“少”可用
little表示，由than可知，该句是比较级句型，所以用less，用much修饰less表示“少得
多”。故填much；less。
10．这个盒子是那个盒子的三倍大。
This box is ________ ________ ________ than that one.
【答案】 three times bigger/larger
【详解】根据句意可知填写三倍大；根据than可知是比较级，顺序为“倍数+比较级”，
故填three；times；bigger/larger。
能力提升
一、单项选择
11．—This blue sweater is too big for me.
—Will you please show me a ________ one?
A．small B．smaller C．the smallest D．smallest
【答案】B
【详解】句意：——这件蓝色毛衣对我来说太大了。——请给我拿一件小一点的好吗？
考查形容词比较级。根据“This blue sweater is too big for me.”结合语境可知，此处指的是
“比这个蓝色毛衣小一点的”，两者之间相比较需用比较级，故选B。
12．—Mr. Zhou, of all the students in our group, who lives________?
—I think Li Lei does.
A．far B．farther C．farthest D．farest
【答案】C
【详解】句意：——周先生，我们组所有的学生中，谁住得最远？——我想是李雷。
考查副词最高级。far远；farther更远；farthest最远；farest错误写法。由of all可知是三者
以上的比较，用最高级，far的最高级为farthest。故选C。
13．In the future, people will live ________ 100 years old.
A．/ B．to C．for D．to be
【答案】D【详解】句意：在未来，人们将活到100岁。
考查动词短语。to到；for为了。live to be“活到……岁”，故选D。
14．The baby elephant’s ________ is about 100 kilos, but an adult elephant may ________ about
5,000 kilos.
A．weight; weigh B．weight; weight C．weigh; weigh D．weigh; weight
【答案】A
【详解】句意：小象的体重约为100公斤，而成年象的体重约为5000公斤。
考查名词及动词的用法。weight重量；是名词；weigh称重，是动词。第一空前是名词所
有格，后加名词；第二空前may是情态动词，后加动词原形，此处缺少谓语动词，
weigh“称重”，是动词，故选A。
15．My pet dog feels like standing ________ his two legs.
A．in B．by C．on D．of
【答案】C
【详解】句意：我的宠物狗想要两条腿站立。
考查介词辨析。in在……里；by通过；on在……上面；of属于……的。固定短语stand on
one’s two legs“两条腿站立”，故选C。
二、阅读判断
阅读下面的短文，判断下列句子是否与短文内容相符，符合的写（A），不符合的写
（B）。
All living things on the earth need other living things to live with. Nothing lives alone.
Sometimes one living thing kills another to live, so they form a food chain.
Plants make food from sunlight, water, air and so on while some animals on(以……为食)
plants directly. For example, locusts(蝗虫) are small insects. Millions and millions of locusts in a
group can eat anything that is green, including a lot of food that people need. In India, locusts
have ever destroyed(破坏) many fields of crops. However, locusts can be food for birds, chickens,
ducks or other living things, even humans.
Humans are at the top of the food chain, they eat not only locusts, but also birds, chickens,
ducks or many other plants and animals. They are members of many food chains, but they often
break up the food chains.
Each form of life is linked(和……有联系) to all the others. Breaking the links puts all lives
in danger. Humans should share the world with other living things in peace.
16．No living things can live alone.
17．Some animals eat plants directly to live.
18．Locusts don’t eat food that people need.
19．Humans hardly ever break up the food chains.
20．It’s dangerous for humans to break up the food chains.
【答案】16．A 17．A 18．B 19．B 20．A
【导语】
本文是一篇说明文，介绍了保持大自然食物链完整的重要意义。
【详解】
16．题意：没有生物能单独生存。
根据原文All living things on the earth need other living things to live with. Nothing lives alone
可知，地球上的生物都是相伴共生的，没有生物能独自生存。该小题说法正确，故选A。
17．题意：有些动物通过直接进食植物来生存。
根据原文Plants make food from sunlight, water, air and so on while some animals on(以……为
食) plants directly可知，有些动物通过直接进食植物来生存。该小题说法正确，故选A。
18．题意：蝗虫不吃人们所需食物。
根据原文Millions and millions of locusts in a group can eat anything that is green, including a lot
of food that people need可知，蝗虫会吃掉人们所需食物。该小题说法错误，故选B。
19．题意：人类几乎从不打破食物链。
根据原文Humans are at the top of the food chain, ... They are members of many food chains, but
they often break up the food chains可知，人类经常会打破食物链。该小题说法错误，故选
B。
20．题意：打破食物链对人类来说是件很危险的事。
根据原文Each form of life is linked(和……有联系) to all the others. Breaking the links puts all
lives in danger可知，打破食物链对人类来说是件很危险的事。该小题说法正确，故选A。
拓展训练
语法填空（2020·广东深圳·统考中考真题）
One day, a man was walking by the corner of a street. Here he met___1___little boy holding
a bird cage and selling the birds inside. He ___2___(stop) and looked very sadly at the birds
without freedom in front of him. The birds were screaming in the cage, trying to fly away.
After standing ___3___ a moment, he said to the boy, "How much does___4___(you) bird
cost? I want…"
"One fifty cents, sir," the boy answered quickly.
"I am afraid that you are mistaken. I am not asking how much it is." The man said, "I would
like___5___(buy) all of them. What I ask is how much you want for them."
Hearing this, the boy___6___(happy) counted the number of the birds in the cage.
"They cost five dollars."
"Here___7___(be) the money!" The man passed the money. The boy counted excitedly.
However, he then was___8___(surprise) to find all the birds had flown away.
"OH, my god, for what reason did you do that, sir? You don't even get a bird!" The boy asked
the man who set the birds free."My boy, let me tell you___9___I did this." The man said, "I have no right to get them. Every
life should be free and they are our____10____(friend). So we should give them freedom."
【答案】
1．a 2．stopped 3．for 4．your 5．to buy
6．happily 7．is 8．surprised 9．why 10．friends
【导语】
这是一篇记叙文，文章主要讲述一个人看到一个小男孩提着一个鸟笼子卖里面的小鸟,这个
人就买了鸟,然后放掉了所有的鸟，并告诉男孩每条生命都应该是自由的，它们是我们的朋
友，我们应该给它们自由。
【详解】
1．句意：在这儿他见到一个小男孩提着一个鸟笼子，卖鸟笼里的鸟。
根据空格后面的词语是little boy可知这是文中第一次提到这个小男孩,故用a表泛指“一
个”。故答案为a。
2．句意：他停下来很伤心地看了看在他面前没有自由的小鸟。
根据下文并列结构“and looked”可知,动作发生在过去,用一般过去时，此处用动词过去式
stopped与looked并列。故答案为stopped。
3．句意：在站了一会儿之后，他对小男孩说：“你的鸟多少钱，我想……”
此处用固定短语for a moment表示“一会儿”。故答案为for。
4．句意：在站了一会儿之后，他对小男孩说：“你的鸟多少钱，我想……”
根据空格后面的词语是名词“bird”可知此处要用形容词性物主代词your来表所属。故答案
为your。
5．句意：我想买所有的鸟。
此处用would like to do表示“想要做某事”，此处用要用动词不定式to buy来填空。故答
案为to buy。
6．句意：听到这个，小男孩开心地数着笼子里鸟。
动词“counted ”要用副词修饰，此处用happy的副词形式修饰动词counted,译为 “快乐地
数着”,故答案为happily。
7．句意：这是给你的钱。
这句话为倒装句,地点here提前，真正的主语为the money,故谓语用单数is。故答案为is。
8．句意：然而，然后他很惊讶地发现所有的鸟都飞走了。
根据“he then was”可知此处是指他感到惊讶,形容人的感受,用surprised表示“感到惊讶
的”。故答案为surprised。
9．句意：让我告诉你为什么我这么做。
tell you后面是宾语从句，此处用 “why I did this”表达这个男人在向小男孩解释这么做的
原因,故答案为why。
10．句意：每条生命都应该是自由的，它们是我们的朋友。
根据前文they are可知,此处应填复数名词friends作表语。故答案为friends。
