Unit 1

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Unit 1 Great Scientists

Do you know?

Who discovered that objects in water are lifted up by a force that helps them float?

Who wrote a book explaining how animals and plants developed as the environment changed?

Archimedes

Charles Darwin

Who invented the first steam engine?

Thomas Newcomen

Who used peas to show how physical characteristics are passed from parents to their children?

Gregor Mendel

Who discovered radium?

Who invented the way of giving electricity to everybody in large cities?

Who was the painter that studied dead bodies to improve his painting of people?

Maries Curie

Thomas Edison

Leonardo da Vinci

Who invented a lamp to keep miner safe underground?

Who invented the earliest instrument to tell people where earthquakes happened?

Who put forward a theory about black holes?

Sir Humphrey Davy

Zhang Heng

Stephen Hawking

Do you know?

发明蒸汽机的并不是瓦特，他是改进纽可门的蒸气机并发明出双动作，使世界进入“蒸气时代”的，使他成为第一次工业革命中的名气最大的发明家。

Do you know John Snow?

Do you know what kind of disease is cholera?

John Snow is a well-known doctor in the 19th century in London and he defeated “King Cholera”.

It is a kind of terrible disease caused by drinking dirty water and it caused a lot of deaths in the old times and it was very difficult to defeat.

Read the passage again and finish Ex. 1(Page 3).

Scientific Report by John Snow

Nobody knew the cause of the serious disease of cholera

a strange cloud of gas found its victims

people absorbed the disease with meals

Collect information from the cholera outbreak to prove which theory was correct

He found the cause of cholera was the polluted water

Idea 2. Because the information showed that the dirty water carried cholera

He defeated cholera by examining the water supply and dealing with the polluted water

Read the passage again and fill in the blanks:

John Snow was a well-known ______ in London in the ___ century. He wanted to find the ______ of cholera in order to ______ it. In 1854 when a cholera ______ out, he began to gather information. He ______ on a map where all the dead people had lived and he found that many people who had drunk the dirty water from the ______ died. So he decided that the polluted water carried cholera. He suggested that the _____ of all water supply be _______ and new methods of ________ with polluted water be found. Finally, “King Cholera” was defeated.

doctor

19th

cause

defeat

broke

marked

pump

source

examined

dealing

Retell the passage according to below:

John Snow was a well-known ____ in London in the ___ century. He wanted to find the ______ of cholera in order to ______ it. In 1854 when a cholera ____ out, he began to gather information. He _____ on a map where all the dead people had lived and he found that many people who had drunk the dirty water from the ______ died. So he decided that the polluted water carried cholera. He suggested that the _____ of all water supply be _______ and new methods of ________ with polluted water be found. Finally, “King Cholera” was defeated.[全文已结束，注意以上仅为全文的文字预览，不包含图片和表格以及排版]

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