Unit 1 Great Scientists Great scientists
?Guess who they are?
Let’s learn about some scientists. Archimedes He put forward the theory that “ Given a pivot, one can prize up the world.”
He wrote The Origin of Species. It explained how animals and plants developed as the environment changed. Charles Darwin
She discovered radium in 1898. She received two Nobel Prizes, one for physics and one for chemistry. Marie Curie
He invented the way of giving
electricity to everybody in large cities. Thomas Edison Zhang Heng
He invented the first seismograph ['sa?zm?,gr?f] to indicate in the direction of an earthquake.
Stephen Hawking
He put forward a theory about black holes. ? Do you think what can scientists do for us?
works of scientists make life much easier and more comfortable. They make great contribution to social development.
What infectious diseases do you know about?
John Snow ( 1813~ 1858) ? a legendary figure in the history of public health, epidemiology （流行病学） and anesthesiology（麻醉学） Do you know this person? Now listen to the tape, and answer the following question.
1 What’s the main idea of the passage? 2 Match the topic of each paragraph Think of a method Find a problem Draw a conclusion Collect results Make a question Analyse the results
Find supporting evidence
Order the stages in setting out a new scientific idea. Find a problem Think of a method Make a question
the results Find supporting evidence Draw a conclusion Collect results
What’s the main idea of the passage? A. John Snow was a well-known doctor in London. B.The cause of Cholera was polluted water. Fast reading
C. The source of all drinking water should be examined. D. How John Snow collected, analyzed data and found the cause of the disease and solved it .
Scanning 2. When did John Snow begin to be famous as a doctor? A. After he attended Queen Victoria as her personal physician. B. Before he attended Queen
Victoria as her personal physician. C. When he found the cause of “King Cholera”. D.
After he defeated “King Cholera”. Scanning
3. Some people thought that cholera spread _____ before John Snow found its cause. A. in the air B. by the beer C. in the water D. by the birds Scanning
4. What played an important role in John Snow’s discovery?
A. The woman moving away from Broad Street. B. The government. C. The map made by himself. D. Queen Victoria’s help.
Scanning 5. At last, “King Cholera” was brought under control by ____.
A. using medicines in hospitals B. driving patients out of the country C. dealing with the polluted water D. getting rid of all kinds of pollution
6. Which of the following is TRUE？ A. John Snow became famous after cholera hit England in the 19th century. B. John Snow began to collect information long before cholera hit England in the 19th century. C. The mother and her daughter mentioned in the text both lived in Broad Street. D. D John
相关推荐：
loading