Unit 6 When was it invented?Section A英语九年级人教版（含解析）

Unit 6 section A
一、知识点讲解
1、 invent 发明；创造
指创造出以前不存在的东西，尤指科技上的发明创造。
例句：—Do you know who invented the electric light bulb 你知道是谁发明了电灯泡吗？
—Edison. 爱迪生。
+ inventor (n. 发明家)
or
【助记】invent
(v. 发明；创造) + i o n invention(n. 发明；发明物)
2. with 有；带有；具有
表示某物带有或具有某种特征。
【拓展】with 作介词，常见的用法还有：
(1) 意为＂和……一起＂，表示伴随。
例句：I like to talk with my friends. 我喜欢和朋友们一起交谈。
(2)意为＂用……＂，表示使用某种工具、手段等。
例句：Cut the watermelon with a knife. 用刀把这个西瓜切开。
(3)意为＂关于；对于；对……来说＂，表示关系等。
例句：Are you pleased with the result 你对这个结果满意吗？
3、It is said that...据说……；有人说……
其中 it 是形式主语， that 引导的从句作真正的主语。
例句：It is said that wisdom is born with a man. 有人说智慧是与生俱来的。
【拓展】类似的句型还有：
It is believed that...＂人们认为……＂； It is reported that... ＂据报道……＂；
It is known that... ＂总所周知……＂； It is supposed that...＂据猜测……＂。
4、not...until...直到……才……
主句/句子的动词一般是非延续性动词，它所表示的动作直到 until 所表示的时间才发生。
until 可用作介词，其后接表示时间的名词；也可用作连词，引导时间状语从句。
例句：She can’t leave until Friday. 直到星期五她才能离开。
5、mention /’men n/ v. 提到；说到
mention 的主要用法：
(1)mention＋ that 宾语从句
例句：He mentioned that the food was invented by a Chinese.
他提到这种食物是由一个中国人发明的。
(2)mention sb./sth.(to sb.) (向某人)提起某人或某事
例句：Don’ mention it before the children. 别在孩子们面前提及此事。
(3)mention doing sth.提到做某事
例句：Whenever I mentioned having dinner together, he said he was too busy.
无论何时我一提起一块儿吃顿饭，他就说太忙。
6、remain 保持不变；剩余
remain 作不及物动词，还可意为＂留下，剩下＂。
例句：She remained at home. 她留在家里。
【拓展】remain 还可作系动词，后可接形容词作表语。
例句：This place remains very cool all summer. 这个地方整个夏天都很凉爽。
7、take place 发生，出现
例句：When did tea trade take place 茶贸易出现在什么时候？
【辨析】take place 与 happen
take place 不能用于被动语态；常指事先安排或事发有因的事情。
happen 不及物动词，不能用于被动语态，常指偶然发生的事情。
8、without doubt 毫无疑问；的确
(1)doubt 作名词，意为＂疑惑；疑问＂。
例句：If there is any doubt, you had better make certain. 如果有什么疑问，你最好弄清楚。
(2)doubt 作动词，意为＂怀疑；不相信＂，其后可直接跟名词或代词作宾语。
例句：I have no reason to doubt him. 我没有理由怀疑他。
【注意】无论 doubt 用作名词还是动词，在肯定句中其后常接 whether 从句，在否定句和疑
问句中常接 that 从句。
例句：We doubt whether he will come. 我们怀疑他是否会来。
例句：There is no doubt that our experiment will succeed. 毫无疑问我们的实验会成功。
二、同步练习。
（一）完形填空
A wind power generator (发电机) is a great way to produce electricity and to save money. If
it is ____1____ by combining solar and gas power, it can be a very good way to save much money
and make our much ____2____.
A wind generator can be a great way to supply your home with natural, renewable (可再生的)
energy. Not only it ____3____ less, it is also a clean source of energy that can be stored as long as
there is ____4____. Wind generators can be easily made at home ____5____ the right guidelines
(指导原则) for you to follow. But the problem is that we don’t have enough windy days to
produce ____6____ of the energy for a whole day. This is ____7____ the wind power generator
used for camping is fine, but not nearly enough for the average household.
There are many ____8____ in the United States which use wind power generators. The
farmers set machines like propellers (螺旋桨) on poles and build them in faraway areas because
they can be too ____9____. There are a lot of other things you should consider before buying a
wind power generator. Many local energy companies have limited using wind power generators
for extra ____10____. And the technology behind wind power generators is not prefect yet.
However, if you are able to supplement the energy you need, you can use a wind power generator.
This way you will save money and protect the environment as well.
1．A．taken B．used C．made D．cut
2．A．richer B．dirtier C．cleaner D．bigger
3．A．costs B．pays C．spends D．takes
4．A．cloud B．snow C．rain D．wind
5．A．about B．of C．with D．on
6．A．any B．all C．none D．few
7．A．how B．when C．where D．why
8．A．farms B．schools C．factories D．families
9．A．expensive B．large C．noisy D．terrible
10．A．usage B．electricity C．money D．food
（二）阅读单选
Inventions make the world better, smarter and a little more fun.
The folding bike helmet (头盗)People hate to wear a helmet because
it’s thick and heavy. Morpher is a bike helmet made from plastics. It is just
as strong as the traditional ones, but flexible (灵活的) enough to fold almost
totally flat. Also it is much easier to carry.
Shoes that tie themselvesAfter we see the movie Back to the Future,
almost everyone wants a pair of self-tying shoes. Now, the shoe dream
comes true in America. When you press a button, the shoes can tie
themselves.
The smart alarm clock — Hello SenseAn alarm clock, called Hello
Sense, can improve your sleep. It can control the temperature, light and even
air quality in your bedroom to help you have a perfect sleep environment.
And it can record your sleep cycles.
Sweet potatoes that could save livesThe lack (缺乏) of vitamin A can
cause blindness and many other illnesses. In sub-Saharan Africa, plant
experts are helping them grow a kind of new sweet potatoes. These potatoes
can help them fight against some illnesses.
11．The folding bike helmet is _________.
A．thick and heavy B．made from metal
C．not as strong as a traditional one D．flexible enough to fold almost flat
12．Now, the dream of shoes can tie themselves comes true in _________.
A．China B．Japan C．America D．France
13．The smart alarm clock can NOT _________.
A．improve our sleep B．control our weight
C．record our sleep cycles D．control the temperature in the bedroom
14．If a child has a poor eyesight, he may be in the lack of _________.
A．vitamin A B．vitamin B C．vitamin C D．vitamin D
15．You can find the passage in a _________.
A．newspaper B．story book C．guide book D．cookery book
High-speed trains，Alipay(支付宝)，shared bikes and online payment are seen as the new Four
Great Achievements of China by young foreigners，according to a video survey by the Silk Road
Research Institute of Beijing Foreign Studies University.In the video，young people from 20
countries along the Belt and Road routes were asked to name great inventions that had influenced
their lives in China.The following is what they said from 4 young people of them.
You can find many wonderful things that we don't
have in Thailand.We don't have Alipay or other
Bond，Bangkok，
online payment apps with which I can go shopping
Thailand without stepping out of the doors.If only I could
bring them back to my country！
I'm from Nepal.I always go out by
Yala， bike.Bicycle-sharing system allows people to
Kathmandu， borrow a bike from point “A” and return it at point
Nepal “B”．It's not only cheap but also a low-carbon(低
碳的) and healthy way of life.I like it very much.
My life in Beijing is quite different from that in
India.Here in China，I seldom take money with me
Arehana，New when I go out.I can pay for almost everything by
Delhi， Alipay.Oh，it's amazing！However，in India，if
India you don't take wallet with you，you'll
be__in__a__tough__spot．
I'm from Romania.China is really a great country
and its high-speed railways are very fast，
Justin，
convenient and tidy.It takes me only 6 hours from
Bucharest，
Beijing to Shanghai by train.It saves a lot of time
Romania
and it's cheaper than airplane.I wish we would
have high-speed railways in our country someday.
16．What does Justin think of the high-speed railways in China according to his words
A．Fast and tidy.
B．Convenient and wonderful.
C．Cheap and amazing.
D．Cheap and tidy.
17．What do “A” and “B” refer to in Yala's words
A．Two bikes. B．Two riders.
C．Two places. D．Two ways of life.
18．What does the underlined phrase “be in a tough spot” mean
A．Get into trouble. B．Lose your way.
C．Stay in silence. D．Be very poor.
19．Which of the following is TRUE according to the above information
A．Bicycle-sharing system provides bikes for free.
B．There are no high-speed railways in Romania now.
C．Alipay is the only way of paying for things.
D．People in Thailand can use online payment apps conveniently.
◆Green tea is the best choice for office workers.
People who always work in places with air conditioning may face skin problems such as easily dry
skin. Among all the drinks, green tea is the best choice. Because there are important things in
green tea. Moreover, drinking more green tea can prevent computer radiation(辐射)．
◆Winter is the season to drink black tea.
Chinese medicine believes that different people should drink different tea based on the different
characteristics and tastes of each kind of tea. Black tea can warm the stomach and quicken
digestion (消化). Therefore, drinking warm black tea in the cold winter is a most suitable choice.
◆Do not drink strong tea.
Strong tea may make the body far too excited and can badly affect the cardiovascular (心血管的)
system (神经系统) as well as the nervous system. For a person who has problem with these parts,
to drink overly (过度地) strong tea may cause heart and blood pressure illness, or even make the
old illnesses much worse.
◆Do not drink too much tea when you are eating.
Drinking too much tea or strong thick tea may not be good for taking in many constant elements
and trace elements (常量元素和微量元素). Also, people should not drink tea with milk or other
milky food.
20．If you always work with the computer, what kind of tea should you drink
A．Black tea. B．Green tea.
C．Strong tea. D．Hot tea.
21．Drinking too much strong tea may cause ________．
A．headaches B．heart disease
C．skin problems D．stomach ache
22．Which of the following is NOT true
A．If you have stomach ache, you should drink black tea.
B．When we choose tea, we should know the characteristics and tastes of each kind of tea.
C．Strong tea may take the body far too excited.
D．At table, we should drink tea as much as possible because it’s good for our health.
23．Which is the best title for the article
A．Green Tea
B．All Kinds of Tea
C．Tea and Seasons
D．How to Drink Tea Correctly
（三）语法填空
阅读下面短文，在空白处填入一个适当的词，或填入括号中所给单词的正确形式。
Using a tea bag is most westerners' favorite way of drinking tea.Do you know how it came about
The tea bag was invented in 1908 by Thomas Sullivan，an American tea ___24___(sell)．He was
sending out free tea in silk bags ___25___ people to try.People put the bags together with the tea
___26___(leaf) into the cup and added hot water.The tea tasted good，and people thought it was
easy ___27___(clean) the cup.They were not happy when Sullivan started sending them the loose
tea(散装茶) again.
Sullivan ___28___(realize) that he had a hot new thing in his hands，and he built ___29___
machine to pack the bags.___30___ tea bags became popular，they were changed from silk to
gauze(薄纱) and later paper.In 1952，Lipton Tea made the tea bag even more popular with its
invention of the four-sided tea bag.Tea bags were soon a hit in the UK，and today about 85% of
the tea in the UK is ___31___(pack) in paper bags.
However，many people still prefer loose-leaf tea.This is because some tea companies put poor
quality tea in ___32___(them) tea bags.But for most ___33___(drink)，tea bags are still an easy
and tasty way to go.
（四）多句选词填空
用方框中所给词的适当形式填空。
inside, cancel, connect, doubt, brain
34．There was some ________ whether Yao Ming could become a great basketball player or not.
35．Doctors believe that lung (肺) cancer is ________ with smoking.
36．Can you tell me why the new year party was ________
37．The purpose of professor Read’s research is to compare computer functions with ________
working.
38．He was wild with joy when he opened the envelope and read the letter ________.
答案
1．B 2．C 3．A 4．D 5．C 6．B 7．D 8．A 9．C 10．B
【解析】本文是一篇说明文，向我们介绍风能发电的相关内容。
1．句意：如果把太阳能和天然气结合起来使用，这将是一个很好的方法，可以节省很多钱，
也更清洁。
taken 拿；used 使用；made 制作；cut 切。根据“If it is...by combining solar and gas power”可
知，把太阳能和天然气结合起来使用，故选 B。
2．句意：如果把太阳能和天然气结合起来使用，这将是一个很好的方法，可以节省很多钱，
也更清洁。
richer 更富有的；dirtier 更脏的；cleaner 更干净的；bigger 更大的。根据常识可知，风能、
太阳能和天然气都是清洁能源，所以如果将它们结合起来使用将会使我们的生存环境更加干
净。故选 C。
3．句意：它不仅成本低，而且是一种清洁的能源，只要有风就可以储存。
costs 花费钱，主语是物；pays 付款，主语是人；spends 花费，主语是人；takes 花费，主语
是物。it 在句中指代 a wind generator，当物作主语时，表示“花费钱”要用 cost。故选 A。
4．句意：它不仅成本低，而且是一种清洁的能源，只要有风就可以储存。
cloud 云；snow 雪；rain 雨；wind 风。根据常识可知，风力发电的前提是有风。故选 D。
5．句意：根据正确的指导方针，你可以很容易地在家里制作风力发电机。
about 关于；of……的；with 和；on 在……上。根据“Wind generators can be easily made at
home...the right guidelines”可知，在家使用风力发电需要有正确指导，介词 with 表示“带有”
符合语境。故选 C。
6．句意：但问题是我们没有足够多的有风的日子来生产一整天的所有能源。
any 任何；all 所有的；none 没有；few 几乎没有。根据“But the problem is that we don’t have
enough windy days to produce...of the energy for a whole day.”可知，不够一整天的所有能源，
故选 B。
7．句意：这就是为什么用于野营的风力发电机很好，但对普通家庭来说远远不够的原因。
how 如何；when 何时；where 哪里；why 为什么。根据“This is...the wind power generator used
for camping is fine, but not nearly enough for the average household.”可知，风力发电产生的能
源有限是它适用于野营但不适用于家用的原因，故选 D。
8．句意：美国有许多农场使用风力发电机。
farms 农场；schools 学校；factories 工厂；families 家庭。根据“The farmers...”可知，是农场，
故选 A。
9．句意：农民们把像螺旋桨一样的机器安装在杆子上，然后在很远的地方建造，因为它们
可能太吵了。
expensive 昂贵的；large 大的；noisy 吵闹的；terrible 糟糕的。根据常识可知，人们将它们建
在很远的地方是因为风力发电会产生很大的噪声。故选 C。
10．句意：许多当地能源公司已经限制使用风力发电机来提供额外电力。
usage 使用；electricity 电；money 钱；food 食物。风力发电是发电方式的补充，故此处表示
额外的电能。故选 B。
11．D 12．C 13．B 14．A 15．A
【解析】本文介绍了四种发明，详细地介绍了它们的特点。
11．细节理解题。根据“It is just as strong as the traditional ones, but flexible (灵活的) enough to
fold almost totally flat.”它和传统的一样坚固，但又足够灵活，可以几乎完全扁平折叠。可知，
这种可折叠的自行车头盔足够灵活，几乎可以折叠成平面。 故选 D。
12．细节理解题。根据“Now, the shoe dream comes true in America.”可知，这种新型的能够自
己系鞋带的鞋子在美国已经被成功研发出来了。故选 C。
13．推理判断题。根据“An alarm clock, called Hello Sense, can improve your sleep. It can control
the temperature, light and even air quality in your bedroom to help you have a perfect sleep
environment. And it can record your sleep cycles.”可知，这种新型的智能闹钟可以改善你的睡
眠；可以控制卧室的温度、光线甚至空气质量，帮助你拥有一个完美的睡眠环境；还可以记
录你的睡眠周期。而 B 选项“控制我们的体重”文中并未提及。故选 B。
14．细节理解题。根据“The lack (缺乏) of vitamin A can cause blindness and many other
illnesses.”可知，缺乏维生素 A 会导致失明和许多其他的疾病。因此，如果一个孩子视力差，
他可能缺乏维生素 A。故选 A。
15．推理判断题。根据“Inventions make the world better, smarter and a little more fun.”结合文
章内容，可知本文主要介绍了四种不同的发明创造，因此最可能出现在报纸上。故选 A。
16．A 17．C 18．A 19．B
【解析】文章大意：短文讲了高速列车、支付宝，共享自行车和在线支付被视为中国新的四
大成就，一些外国的年轻人对这些新事物提出了自己的看法。
16．细节理解题。根据 Justin 所说的话 the high-speed railways are very fast，Convenient and
tidy．高铁快速、方便和整洁．可知他认为中国的高铁快速和整洁；故答案选 A。
17．细节理解题。根据 Yala 所说的话 I always go out by bike．Bicycle-sharing system allows
people borrow a bike from point A and return it at point B．我总是骑自行车出去，共享单车允
许人们从 A 处借，然后把它归还在 B 处。可知这里"A"和"B"指的是两个地方；故答案选 C。
18．词义猜测题．根据上文说 I can pay for almost everything Zhi Fu Bao．我几乎可以用支付
宝支付每件东西，和下文 however 但是，表示转折，可知应是说，但是，在印度，如果你没
带钱包，你会陷入困境；结合选项，可知 A 选项“Get into trouble.”意为陷入困境，故答案选
A。
19．细节判断题。根据 Justin 所说的话 I am from Romania．I wish we would have high-speed
railways in our country someday．我是罗马尼亚人，我希望有一天我们的国家能有高速铁路。
可知现在在罗马尼亚没有高铁，故答案选 B。
20．B 21．B 22．D 23．D
【解析】短文大意：饮茶对人是有好处的，但是方法要正确，本文从四个方面介绍了人们如
何正确饮茶。
20．根据◆Green tea is the best choice for office workers.中最后一句 Moreover, drinking more
green tea can prevent computer radiation(辐射)可知，多喝绿茶可以防止电脑辐射。故选 B。
21．根据◆Do not drink strong tea 中最后一句.For a person who has problem with these parts, to
drink overly (过度地) strong tea may cause heart and blood pressure illness, or even make the old
illnesses much worse.可知，喝过量的浓茶会导致心脏和血压疾病。故选 B。
22．根据◆Do not drink too much tea when you are eating.中第一句 Drinking too much tea or
strong thick tea may not be good for taking in many constant elements and trace elements (常量元
素和微量元素).可知，喝太多茶或浓茶可能不利于摄入许多常量元素和微量元素。所以我们
吃饭时不应该多喝茶。故选 D。
23．根据短文大意可知，本文主要介绍了人们如何正确饮茶的方式方法，所以 How to Drink
Tea Correctly 符合文意。故选 D。
24．seller 25．for 26．leaves 27．to
clean 28．realized 29．a 30．As/While 31．packed 32．their 33．drinkers
【解析】短文大意：短文介绍的是西方流行的饮茶方式袋装茶，讲述了它的起源、发展和现
状，说明了袋装茶是一种简单而美味的饮茶方式。
24．句意：茶包是由美国茶叶销售商 Thomas Sullivan 于 1908 年发明的。tea seller 茶叶销售
商，tea 名词用作形容词，做名词的定语。根据句意结构和英文提示，可知填 seller。
25．句意：他用丝绸袋送来免费茶叶供人们试用。send out 发送；for 表目的，根据句意语境
和上下文提示，可知填 for。
26．句意：人们将袋子和茶叶放在杯子里，加入热水。tea leaves 茶叶；根据句意语境和英
文提示，可知需用 leaf 的复数形式，故填 leaves。
27．句意：茶味道很好，人们认为这杯茶很容易学。it is/was +形容词+ to do，固定句型，不
定式是真正主语；根据句意语境和英文提示，可知填 to learn。
28．句意：沙利文意识到他手里拿着一个热门新东西。本句是宾语从句，主句缺谓语动词，
根据句意语境和英文提示，结合短文的时态，可知填 realized。
29．句意：他造了一台机器来包装这些袋子。machine 机器，单数名词前面需加不定冠词 a。
根据句意语境和上下文提示，可知填 a。
30．句意：随着茶袋的流行，它们从丝绸变成纱布和后来的纸张。根据句意语境可知，主句
和从句表示两个正在发展变化的情况，相当于汉语的“随着”，需用 as 引导，故填 As/While。
31．句意：如今英国大约有 85%的茶叶是用纸袋包装的。85% of the tea 是动词 pack 的受动
者，需用被动语态，即 be+过去分词结构；根据句意结构和英文提示，可知填 packed。
32．句意：这是因为一些茶叶公司把劣质茶叶放进茶叶袋里。句尾的 tea bags 其实是 some tea
companies一些茶叶公司的，some tea companies是复数第三人称，其相应的物主代词需用 their，
结合英文提示，可知填 their。
33．句意：但对于大多数饮茶者来说，袋泡茶仍然是一种简单而美味的方法。most 大多数
的，形容词修饰复数名词；根据句意语境和英文提示，可知填 drinkers。
【点睛】短文填空题，要求根据句意语境和英文或上下文提示用单词的正确形式填空，主要
考查单词形式，包括名词的单复数和所有格、动词的三单形式、非谓语动词、基数词或序数
词，主格代词/宾格代词和物主代词（形容词性物主代词/名词性物主代词）等。这类题目难
度不大，重点是掌握句意，在理解的基础上把握句子时态，从而判断所给单词的正确形式。
34．doubt 35．connected 36．canceled 37．brain 38．inside
【解析】34．句意：有人怀疑姚明能否成为一名伟大的篮球运动员。根据“whether Yao Ming
could become a great basketball player or not.”及选词可知，此处指的是“有一些怀疑”，doubt“怀
疑”，不可数名词。故填 doubt。
35．句意：医生认为肺癌与吸烟有关。根据“lung (肺) cancer is...with smoking.”及选词可知，
此处是 be connected with“与……有关”，故填 connected。
36．句意：你能告诉我为什么新年晚会取消了吗？根据“why the new year party was”及选词
可知，晚会被取消了，cancel“取消”，动词，空前有 was，此处用过去分词构成被动语态，
故填 canceled。
37．句意：里德教授研究的目的是比较计算机功能和大脑工作。根据“compare computer
functions with...working.”及选词可知，是把计算机功能和大脑工作进行比较，brain“大脑”。
故填 brain。
38．句意：当他打开信封读里面的信时，他欣喜若狂。根据“he opened the envelope and read the
letter”及选词可知，是打开信封读里面的信，inside“里面”。故填 inside。