Did you ever wonder how some of your favorite foods, products or toys came about? Believe it or not, they may have been an accident, or a failure of some other intention. Below, we found three mistakes we’re thankful for turned out to be what they are.

1. Most historians hold that the Chinese invented fireworks in the 9th century when they discovered how to make gunpowder. Story has it that a Chinese cook accidentally mixed together what were then considered common kitchen items and noticed they burnt. When put tightly(緊緊地）in a bamboo tube(管子and lit, it blew up.

2. In May of 1886, a law led John Pemberton, a pharmacist(藥劑師), to rewrite the formula(配方) for “Pemberton’s French Wine Coca”, his popular headache treatment. Containing sugar instead of wine as a sweetener, the outcome became something for Coke, which was later mixed with carbonated(碳酸) water. His bookkeeper suggested the name Coca-Cola because he thought the two C’s would look good together, which is how what we call Coca-Cola, a world-wide drink came into being.

3. During World WarⅡ, scientists at the University of Birmingham invented the magnetron(磁控管)—an important heat-producing part of the microwave oven. While working for Raytheon Corporation after the war, the American engineer Percy Spencer was testing the magnetron when a chocolate bar in his pocket melted. He went on to test other foods including popcorn kernels(仁), and found it to be a much more efficient way to cook. In 1947 Raytheon came out with the first restaurant microwave oven, which was six feet tall and weighed 750 lbs.

1.The underlined phrase “ blew up” might mean _______ in Chinese.

A. 爆炸 B. 膨脹 C. 升華 D. 蒸發(fā)

2.Percy Spencer found the microwave efficient in cooking when he was ________.

A. looking for a way to melt his chocolate

B. trying to know tow a magnetron could cook

C. working to know how the magnetron works

D. asked to invent a restaurant microwave oven

3. The right time order of the three inventions should be ________.

A. fireworks, the microwave and Coca-cola

B. fireworks, Coca-cola and the microwave

C. Coca-cola, fireworks and the microwave

D. the microwave, Coca-cola and the fireworks

4.What can we learn from the above invention stories?

A．Experiments makes great inventors of our time.

B. Nothing is impossible if one tries each day.

C. Inventors come out of hard work at any time.

D. A small incident may lead to a great invention.

5.What’s the best title for the passage?

A. What great inventions they are!

B. Inventions from Three Countries.

C. Stories of Accidental Inventions.

D. The Human Inventions of time.

練習冊系列答案
相關習題

科目：初中英語 來源：2015-2016學年福建南安市八年級上學期期中英語試卷（解析版） 題型：閱讀理解

Tu Youyou, an 84-year-old Chinese female scientist, was awarded the 2015 Nobel Prize in Physiology (生理學) or Medicine on Oct. 5. She found a medicine that cures the deadly disease called malaria(瘧疾). Tu shared the prize with two scientists from the US and Japan. Tu is the first native Chinese person to get the Nobel Prize in natural science.

Tu found artemisinin (青篙素) in sweet wormwood(青篙) back in 1971. She spent the following years trying to improve the medicine. According to World Health Organization, about 200 million people suffer from malaria around the world, and about half a million die each year. Today, artemisinin is still the most useful medicine that fights against malaria.

When Tu joined the national research team to find the malaria medicine in the 1960s and the 1970s, things were hard. The team didn’t have advanced equipment then. Tu used to medicines by taking them herself. Tu’s team searched old Chinese medicine books by hand and tested over 2,000 traditional recipes (配方).

To do research, Tu also had to travel a lot. Once she returned to her family after six months away from home. Her little daughter didn’t recognize her and hid from the “strange woman”. However, Tu never complained. “ I feel rewarded when I see so many cured patients,” she said.

1.Malaria is a kind of .

A. food B. deadly disease C. cancer

2.How many people shared the 2015 Nobel Prize in Physiology or Medicine?

A. 2 B. 3 C. 4

3.Tu Youyou found artemisinin .

A. at the age of 40

B. after an American scientist found it

C.When she joined the national research team in the 1960s

4.Why did Tu use to test the medicine by taking them herself?

A. Because she liked to do so.

B. Because someone forced her.

C. Because she didn’t have good equipment.

5.Which is True according to this passage?

A. About 100 million people die from malaria every year.

B. Old Chinese medicine books are useless.

C. Tu’s little daughter didn’t know her after she left home for six months.

查看答案和解析>>

科目：初中英語 來源：2015-2016學年內蒙古包頭第四十三中學八年級上學期期中英語試卷（解析版） 題型：選詞填空

根據(jù)方框內所給單詞的適當形式填空

reach careful choose necessary both difference

wonderful health one our

1.It's good for our _____________ to have some vegetables every day.

2.Mrs. Smith likes wearing _____________ comfortable and beautiful clothes.

3.Their school is different from _____________.

4.Fred doesn't work as _____________as his brother.

5.Both of the jackets look nice on me. I can't decide which one to _____________.

6.My father _____________the factory at 8:00 on weekdays.

7.There are a few _____________between the two pictures.

8.It's _____________ to give them clean water if you want them to be healthy.

9.He goes to see his dentist at least _____________ a month.

10.This TV play is very _____________, I'd like to see it again.

查看答案和解析>>

科目：初中英語 來源：2016屆重慶第七十一中學校九年級上學期第三次月考英語試卷（解析版） 題型：單項填空

–Listen! Helen is singing in the next room.

-- It be Helen. She has gone to Guangzhou.

A. would B. can’t

C. could D. might

查看答案和解析>>

科目：初中英語 來源：2016屆山西太原市九年級上學期階段性測評一英語試卷（解析版） 題型：單項填空

Nobody told me how _____, but finally I solved it by myself.

A. could I deal with the problem

B. I can deal with theproblem

C. I could deal with the problem

查看答案和解析>>

科目：初中英語 來源：2016屆江蘇鹽城東臺許河鎮(zhèn)中學九年級上學期第二次調研英語試卷（解析版） 題型：閱讀理解

Smoking in indoor public places including public working places, public transport vehicles and some other special outdoor working places has been banned(禁止)in China since January 2011.Let’s look at the following advantages of banning smoking.

First, banning smoking will not only help in saving smokers from health problems and diseases, but will also be good for passive(被動)smokers. When the smoker is smoking in a restaurant, the people around him are sure to breathe in the smoke and suffer from the diseases an active smoker gets. If smoking is banned, spread of these diseases can be controlled.

Next, banning smoking will put stress on smokers to give up. Since a smoker is prevented from smoking, he will learn how to live without smoking for long hours. When a smoker doesn’t smell or see anybody around him smoking, it might reduce his wish to smoke too. As a result, people have to give up smoking.

Smoking in public places influences non-smokers to start smoking, especially adolescents. When teens see people around them smoking, they will follow them easily. Thus the number of teen smokers will increase. Also asthma(哮喘)and other problems are often seen in children living around smokers. So if it is banned, these places will become safe for children and teenagers.

Looking from the economic point of view, smoking should be banned to increase work productivity(生產率).Employees(雇員)who smoke usually take breaks to smoke while working. So the number of hours they put in their work is smaller.

If you see from the environment point of view, smoking should be banned. Smoking causes air pollution. If it is banned, it will help keep the environment from getting worse.

1.________doesn’t belong to a non-smoking place.

A.A field B.A hospital

C.A library D.A restaurant

2. The second paragraph mainly wants to tell us ______.

A. banning smoking is good for restaurants

B. banning smoking is good for non-smokers

C. banning smoking is good for spread of diseases

D. banning smoking is good for active smokers and passive smokers

3.How many advantages of banning smoking are mentioned in this passage?

A. Two. B. Four. C. Five. D. Six.

4.According to the text, the underlined word “adolescents” means ______.

A. men B. women C. adults D. teenagers

5.Which of the following statements in NOT true?

A. If smoking is banned, work productivity will increase.

B. If smoking is banned, the number of teen smokers will be larger.

C. If smoking is banned, it will make the environment become better.

D. If smoking is banned, smokers will learn how to live without smoking.

查看答案和解析>>

科目：初中英語 來源：2015-2016學年重慶開縣五校八年級上學期期中聯(lián)考英語試卷（解析版） 題型：句型轉換

句型轉換。

1.Must we drink eight cups of water every day?（作否定回答）

No，_______ _______.

2.You’d better ask our computer teacher for help. （改為否定句）

You’d better _______ _______ our computer teacher for help.

3.I play basketball twice a week. （對畫線部分提問）

_______ _______ do you play basketball？

4.You mustn’t smoke here. (同義句轉換)

_______ ______ here!

5.What’s wrong?（同義句轉換）

What’s _______ _______？

查看答案和解析>>

科目：初中英語 來源：2014-2015學年湖北咸寧嘉魚縣實驗中學八年級下第一次月考英語試卷（解析版） 題型：單詞拼寫

短文填詞。根據(jù)短文內容及首字母提示，在每個空格處填上一個恰當?shù)脑~，使短文完整.通順。

Nowadays young people often have problems with their minds. Some students become 1.n________ because they have to study very hard. Others have2.t________ getting along well with people like their parents and classmates. Lu Jian, a fifteen-year-old student from Henan, couldn’t 3.u_______ his teacher and was doing badly in his lessons. He 4. b________ so worried that he wouldn’t like to do his daily activities.

Dai Lin, a student from Shandong, fourteen years old, was 5.a________ of meeting strangers. His face 6. t________ red when he met them. Another student, sixteen-year-old Liu Fang from Anhui had a 7. s________ of scare(恐懼). She was afraid of8.t________ or exams. When she looked at the exam paper, she couldn’t think of 9. a_______ to write. A recent(最近的) report from China Daily says about 14% of Beijing students have mental problems, 10.e________ teenagers. Their troubles include(包括) worries and unhappiness and having problems in learning and getting on with people.

A famous expert(專家) on teenagers gave the following 11. a________ for teenagers:

Talk to your parents or teachers often.

Take part in group activities and play sports.

Go to the doctor’s if not feeling 12.w________.

查看答案和解析>>

科目：初中英語 來源：2015-2016學年河南安陽第六十三中學七年級上期中英語試卷（解析版） 題型：單項填空

I have a sister, a brother ________ a cousin.

A. or B. for C. for D. and

查看答案和解析>>

同步練習冊答案