普通高中课程标准实验教科书 英语必修5 Unit 1 Great scientists

   John Snow was a famous doctor in London - so expert, indeed, that he attended Queen Victoria as her personal physician. But he became inspired when he thought about helping¹ ordinary people exposed to cholera². This was the deadly disease³ of its day. Neither its cause nor its cure was understood. So many thousands of terrified people died every time there was an outbreak. John Snow wanted to face the challenge and solve this problem. He knew that cholera would never be controlled until its cause was found.
He became interested in two theories that possibly explained how cholera killed people. The first suggested that cholera multiplied in the air. A cloud of dangerous gas floated around until it found its victims. The second suggested that people absorbed this disease into their bodies with their meals. From the stomach the disease quickly attacked the body and soon the affected⁴ person died.
John Snow suspected that the second theory was correct but he needed evidence. So when another outbreak hit London in 1854, he was ready to begin his enquiry. As the disease spread quickly through poor neighbourhoods, he began to gather information. In two particular streets, the cholera outbreak was so severe that more than 500 people died in ten days. He was determined⁵ to find out why.
First he marked on a map the exact places where all the dead people had lived. This gave him a valuable clue about the cause of the disease. Many of the deaths were near the water pump in Broad Street (especially numbers 16, 37, 38 and 40). He also noticed that some houses (such as 20 and 21 Broad Street and 8 and 9 Cambridge Street) had had no deaths. He had not foreseen this, so he made further investigations⁶. He discovered that these people worked in the pub⁷ at 7 Cambridge Street. They had been given free beer and so had not drunk⁸ the water from the pump. It seemed that the water was to blame.
Next, John Snow looked into the source of the water for these two streets. He found that it came from the river polluted by the dirty water from London. He immediately told the astonished people in Broad Street to remove the handle from the pump so that it could not be used. Soon afterwards the disease slowed down. He had shown that cholera was spread by germs⁹ and not in a cloud of gas.
In another part of London, he found supporting evidence from two other deaths that were linked to the Broad Street outbreak. A woman, who had moved away from Broad Street, liked the water from the pump so much that she had it delivered to her house every day. Both she and her daughter died of cholera after drinking the water. With this extra evidence John Snow was able to announce with certainty¹⁰ that polluted water carried the virus.
To prevent this from happening again, John Snow suggested that the source of all the water supplies be examined. The water companies were instructed not to expose people to polluted water any more. Finally "King Cholera" was defeated

 

1 helping   

n.食物的一份&adj.帮助人的，辅助的

参考例句：

• The poor children regularly pony up for a second helping of my hamburger. 那些可怜的孩子们总是要求我把我的汉堡包再给他们一份。
• By doing this, they may at times be helping to restore competition. 这样一来, 他在某些时候,有助于竞争的加强。

2 cholera   

n.霍乱

参考例句：

• The cholera outbreak has been contained.霍乱的发生已被控制住了。
• Cholera spread like wildfire through the camps.霍乱在营地里迅速传播。

3 disease   

n.疾病，弊端

参考例句：

• The doctors are trying to stamp out the disease.医生正在尽力消灭这种疾病。
• He fought against the disease for a long time.他同疾病做了长时间的斗争。

4 affected   

adj.不自然的，假装的

参考例句：

• She showed an affected interest in our subject.她假装对我们的课题感到兴趣。
• His manners are affected.他的态度不自然。

5 determined   

adj.坚定的；有决心的

参考例句：

• I have determined on going to Tibet after graduation.我已决定毕业后去西藏。
• He determined to view the rooms behind the office.他决定查看一下办公室后面的房间。

6 investigations   

（正式的）调查( investigation的名词复数 )； 侦查； 科学研究； 学术研究

参考例句：

• His investigations were intensive and thorough but revealed nothing. 他进行了深入彻底的调查，但没有发现什么。
• He often sent them out to make investigations. 他常常派他们出去作调查。

7 pub   

n.[英]旅馆，小店，酒馆

参考例句：

• He is the landlord of this pub.他是这家酒店的店主。
• They saw that four large men marched into the pub.他们看到四个彪形大汉走进了酒吧。

8 drunk   

adj.醉酒的；(喻)陶醉的；n.酗酒者，醉汉

参考例句：

• People who drives when they are drunk should be heavily penalised.醉酒驾车的人应受重罚。
• She found him drunk when she came home at night.她晚上回家时，经常发现他醉醺醺的。

9 germs   

n.微生物( germ的名词复数 )；病菌；起源；发端

参考例句：

• Dirty hands can be a breeding ground for germs. 脏手会滋生病菌。
• The air is full of millions of invisible germs. 空气中充满了许多看不见的细菌。 来自《简明英汉词典》

10 certainty   

n.必然的事，确定的事实，确信，确实

参考例句：

• I can't say with any certainty where I shall be next week.我不能确切地说下周我在什么地方。
• I know for a certainty that the company has been bought up.我确实知道公司已经被人收购了。