You must think a computer is the best thing in the world, right? You must think it works at a super speed and can do everything? Well, it’s not! In fact, the brain is much more powerful than any super computer! Think about when a glass is just about to fall off the table. Your brain controls everything that you need to do to save that glass from falling. First your eyes check out what’s going on, then tell your brain, and your brain decides how quickly you need to react(反應(yīng)), and then your muscles(肌肉) go into action. That is just from your brain. No computer could ever come close to that!

The brain weighs just 3 pounds, but it controls everything you do from thinking, learning, feeling even to breathing and your heart beating. Even though the brain is just 2% of your body weight, it uses around 20% of all your energy in your body. That is a lot for such a small organ(器官). There are about 100 billion tiny, tiny little cells(細(xì)胞) in your brain. There are so many that it would take you over 3,000 years to count them all!

Your brain stops growing when you’re 18, but it actually keeps on developing and learning new things. So your parents are really super smart! You won’t be able to fool them! Believe it or not, your brain NEVER stops working. Even during sleeping, the brain works for long-term memory establishment(建立). It is realized that the brain is the second organ in the body as the heart that never stops during human lives.

So everyone should be proud of such a gift of nature.

1.In Paragraph 1, the writer wants to tell us .

A. eyes and muscles react quickly

B. the brain controls everything in your body

C. the computer is the best thing in the world

D. the brain is more powerful than any computer

2.In Paragraph 2, the underlined word “That” refers to(指的是) .

A. the body weight B. 2% of the body weight

C. all energy in the body D. around 20% of the energy in the body

3.Which is RIGHT according to the passage?

A. The brain doesn’t work during sleeping

B. The brain is the only organ that never stops

C. The brain keeps growing during human lives

D. The brain keeps on developing during human lives

4.Which word can best describe the brain according to the passage?

A. Magic B. Quick C. Light D. Developing

5.In which magazine can the passage be found most probably?

A. Business Weekly B. Medicine C. Science D. Sports

1.D 2.D 3.D 4.A 5.C 【解析】本文介紹了大腦為什么比任何超級計(jì)算機(jī)都強(qiáng)大得多。在文中介紹了大腦是如何通過神經(jīng)控制肌肉來協(xié)同工作的。同時(shí)介紹了大腦的重量雖然只有3磅，但它控制著你的思考、學(xué)習(xí)、甚至呼吸和心臟跳動(dòng)等一切活動(dòng)。 1.主旨大意題。由文章第一段“In fact，the brain is much more powerful than an...
練習(xí)冊系列答案
相關(guān)習(xí)題

科目：初中英語 來源：人教版2018屆九年級全一冊 Unit5 單元檢測試卷 題型：單選題

（題文）Mobile phones for communicating with others.

A. is used B. uses

C. was used D. are used

D 【解析】 句意：手機(jī)被用于和其他人交流。主語是mobile phones和謂語use之間是被動(dòng)關(guān)系,要用被動(dòng)語態(tài),主語mobile phones是復(fù)數(shù)，故謂語用復(fù)數(shù)形式，故答案為D。

查看答案和解析>>

科目：初中英語 來源：四川宜賓2018年中考試卷 題型：單選題

We all look forward to you again soon.

A. see B. seeing C. seen

B 【解析】句意：我們都盼望著不久再次見到你。根據(jù)look forward to doing sth盼望做某事；故選B

查看答案和解析>>

科目：初中英語 來源：廣東省2018屆九年級下學(xué)期一�？荚囉⒄Z試卷 題型：看圖作文

書面表達(dá)

學(xué)校開展“How to Solve the Exam Stress”征文比賽，請你根據(jù)圖片和表格中提示的內(nèi)容，簡要描述并適當(dāng)發(fā)表自己的觀點(diǎn)，寫一篇英語短文。

適當(dāng)?shù)膲毫?/p>

積極思考，認(rèn)真學(xué)習(xí)。

及時(shí)復(fù)習(xí)，防止遺忘。

過重的壓力

無法入睡，非常疲倦。

害怕考試，導(dǎo)致失敗。

應(yīng)對的措施

合理計(jì)劃，準(zhǔn)備充分。

…… (你的2-3條建議)

注意：1. 詞數(shù)80左右（文章的開頭已給出，不計(jì)入詞數(shù)）

2．不得透露學(xué)校、姓名等任何個(gè)人信息，否則不予評分。

Everyone may have the exam stress. A little bit of stress can be a good thing to us._____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

How to Solve the Exam Stress Everyone may have the exam stress. A little bit of stress can be a good thing to us. If we have proper stress, we can think actively and work harder. Besides, it can re...

查看答案和解析>>

科目：初中英語 來源：廣東省2018屆九年級下學(xué)期一�？荚囉⒄Z試卷 題型：完型填空

When it comes to November 11, the young generations will consider it as the Single’s Day as well as the online shopping carnival(狂歡節(jié)).

Online shopping has been much more ______ especially after Jack Ma, the CEO of Tmall and Taobao, had the idea of “Double Eleven”. The ______ of online shopping include cheaper pieces, fast searching, comparing between products, and saving time. Before the shoppers make their decisions, they can check ______ and recommendations about the products from other buyers. It is truly global so people can buy the best products from all over the world. Distance is no longer a ______ because most sellers provide an express service(快遞服務(wù)) and goods will be sent straight to the door ______. You don’t even need to ______ out of your house or go to the shops. You can stay at home with a nice cup of tea and just click your mouse to choose the article you like.

Online shopping is very ______, but there’s always a trap. Shoppers who buy products online are ______ that the products may be different from what they have expected. Online shopping has proved to be ______ enough. Online shoppers have to fill in their personal information and credit card information, which can be stolen and used by skillful hackers. It will increase the risk of losing money.

So we should be ______ enough to avoid these problems when we enjoy online shopping.

1.A. surprising B. necessary C. excellent D. fashionable

2.A. achievements B. agreements C. advantages D. adventures

3.A. requests B. reviews C. researches D. requirements

4.A. mistake B. trouble C. question D. problem

5.A. quickly B. slowly C. freely D. suddenly

6.A. stand B. step C. look D. sit

7.A. convenient B. difficult C. dangerous D. expensive

8.A. bored B. worried C. excited D. pleased

9.A. unsafe B. unusual C. untrue D. unhappy

10.A. cheerful B. useful C. helpful D. careful

1.D 2.C 3.B 4.D 5.A 6.B 7.A 8.B 9.A 10.D 【解析】本文介紹了網(wǎng)上購物的利與弊。網(wǎng)購的優(yōu)點(diǎn)包括更便宜的價(jià)格，快速的搜尋，選擇產(chǎn)品更省時(shí)。在網(wǎng)上買東西的購物者擔(dān)心那些商品可能和他們期望的不同。有時(shí)，網(wǎng)購是不安全的。 1.D 考查形容詞及語境的理解。A. surprising 令人驚訝的； B...

查看答案和解析>>

科目：初中英語 來源：山東省聊城市2018年中考英語試卷 題型：多任務(wù)混合問題

閱讀下面短文，根據(jù)其內(nèi)容完成后面各項(xiàng)任務(wù)。

Who's working while you re asleep?

Police officers

Some police officers answer calls every night at the station. Others go around the town and city on foot or in cars.因?yàn)樗麄冃燎诠ぷ�，你才能安然入�?/u>。

Firefighters (消防隊(duì)員)

Even at night, firefighters are ready to help. Whenever they get a call, they will go at once to fight fires and help people.

Doctors

If you get sick or hurt at night, doctors can take care of you at the hospital. The doctor will examine(檢查)you, give you medicine and even do an operation(手術(shù))on you.

Bakers(糕餅師傅)

You may never think that bakers often start the day while you are still asleep. They prepare all the things they need for the day and then start working. Bakers want their bread and cakes to be fresh and delicious every day.

In fact, many other people work at night. Let’s thank them for everything they do for us.

1.將文中劃線的漢語句子譯成英語。

2.將文中劃線的英語句子譯成漢語。

3.回答問題：How many kinds of things can the doctor do at night?

4.回答問題： What do bakers prepare before they start working?

5.從文中找出與下面所給句子意思相同的句子。

It’s true that a lot of people as well as these people work at night.

1.Because of their hard work/ Because they work hard, you can sleep safely. 2.無論何時(shí)接到電話，他們都會立即去滅為救人。 3.Three/3 4.They (Bakers) prepare all the things they need for the day. /All the things the...

查看答案和解析>>

科目：初中英語 來源：江蘇省灌南縣2018屆九年級各校命題評比中考英語模擬試卷11 題型：材料作文

書面表達(dá)

假定你叫John，最近從報(bào)紙上得知英國某公司將在你的家鄉(xiāng)建一座工廠，請給該公司寫封電子郵件。要點(diǎn)如下：

表示歡迎：有利于家鄉(xiāng)發(fā)展等；

感到擔(dān)憂：造成環(huán)境污染等；

希望了解有關(guān)環(huán)保措施及更多信息。

適當(dāng)提出一點(diǎn)你的建議。

注意：1．詞數(shù)80—100；

2．請不要逐句翻譯，可適當(dāng)發(fā)揮以使行文連貫；

3．郵件的開頭和結(jié)尾已為你寫好，不計(jì)入總詞數(shù)。

Dear Sir or Madam,

_____________________________________________________________________________

_____________________________________________________________________________

_____________________________________________________________________________

Yours faithfully,

John

Dear Sir or Madam, I am a middle school student. I have recently learned from the newspaper that you are going to build a factory here in my hometown. There is no doubt that it is good for the deve...

查看答案和解析>>

科目：初中英語 來源：江蘇省灌南縣2018屆九年級各校命題評比中考英語模擬試卷11 題型：單選題

— Hurry up, you will miss the great show. — Ok. I’m coming.

A. so B. but C. and D. or

D 【解析】句意：——快點(diǎn)，否則你將錯(cuò)過精彩的演出。——好的，我馬上來。本題主要考查連詞辨析。A. so“所以”，表示結(jié)果；B. but“但是”，表轉(zhuǎn)折；C. and“和”，表示并列；D. or “否則”，表假設(shè)關(guān)系。根據(jù)題干“Hurry up”（快點(diǎn)）與“you will miss the great show”（你將錯(cuò)過精彩的演出）的關(guān)系，可知這里是一種假設(shè)關(guān)系，因此or符合題意，故...

查看答案和解析>>

科目：初中英語 來源：2018年四川宜賓中考英語試卷 題型：閱讀單選

Do you want to find a job? What kind of job do you want to get? Here are some jobs for you to choose from.

Waiterrequired

At UK Grill Restaurant

Pay: £6.90 per hour

20 hours per week, 5 pm-10 pm, 4 nights

Experienced waiters only To apply, email your CV to [email protected]

Cleanerneeded

Salary: £6.75 per hour

No experience needed

Working on Monday, Wednesday to Saturday

4:30 pm- 6 pm

Apply by telephone: 013-89483761

Driverwanted

We are looking for delivery drivers

Salary: £7.20- 7.60 per hour

No experience needed

Hours: 8:00 am to 4:00 pm, 5 days per week

Ring 024-79103694

for an application form

SupportWorkerwanted

Do you like to care for others? Can you understand older people? Do you have good listening skills? Can you work on weekends? If you have answered YES to the above, we would like to hear from you:

Starting rate of £7.50 per hour

Excellent Training [email protected]

1.Which job needs only experienced persons?

A. Waiter. B. Cleaner. C. Driver. D. Support Worker.

2.Which is the most probably a full-time job?

A. Waiter. B. Cleaner. C. Driver. D. Support Worker.

3.To work as a cleaner, you need to .

A. have enough experience B. work from 4:30 pm-6 pm

C. ring for an application form D. satisfy many requirements

4.How can you get the job as a support worker?

A. Ring 024-79103694.

B. Ring 013-89483761.

C. Send an email to [email protected]

D. Send an email to [email protected]

1.A 2.C 3.B 4.D 【解析】這是幾個(gè)招聘廣告。 1.根據(jù)Waiterrequired和Experienced waiters only To apply,故選A 2.根據(jù)Driverwanted和Hours: 8:00 am to 4:00 pm, 5 days per week可知是全職工作；故選C 3.根據(jù)Cleanerneeded和Wor...

查看答案和解析>>

同步練習(xí)冊答案