辨别下列复合句的类型： 1. I think (that) women can reach very high achievements in many fields of science. 2. I don’t know where Charlie Chaplin got his stick. 3. You should pay attention to what you did. 4. His trouble is where he can find a new job. 5. Which kind of food is the best is still not certain. 6. Henry Adams made a promise that he would not open the letter until 2 o’clock. 7. I’ll call you when I get there.

8. Mr. Ling is just the boy (whom) I want to see.

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 （ BC ） Ancient Greek Charles Darwin Britain

Who invented the first steam engine? Thomas Newcomen Britain 纽卡门 Who used peas to show how physical characteristics are passed form parents to their children? Gregor Mendel 孟德尔 Austria

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 Mona Lisa

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 戴维 戴维灯 Zhang Heng Stephen Hawking

John Snow ( 1813~ 1858) Englishman

John Snow defeats “King cholera” JOHN SNOW DEFEATS “_____________” King cholera

What is Cholera? Cholera is the illness caused by a bacterium( 细菌 ) called Vibria cholerae( 霍乱弧菌 ). It infects people’s intestines ( 肠 ), causing diarrhea( 腹泻 ), vomiting( 呕吐 ) and leg cramps( 抽筋 ).

A brief introduction of cholera Broad Street

Task I. Find out the main idea (or topic sentence) of each paragraph: John Snow wanted to use his knowledge to solve cholera. He got interested in two theories. He needed to prove the second theory was correct. He found out that dirty water was to blame by using a map. Para. 1 Para. 2 Para. 3 Para. 4 Para. 5 Para. 6 He told people to remove the handle from the pump. Polluted water carried the disease

Finally “King Cholera” was defeated Para 7 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. C. The source of all drinking water should be examined. D. How did John Snow collect, analyze data and find the cause of the disease and solved it.

Task II detailed reading Para 1. John Snow is afraid of facing the challenge. (T/F) Para 2. translate the first sentence. Para 3. In his opinion, which theory is possibly right? Para 4. What was this map used for in 1854? Para 5. Cholera was ____ by _____and not in a cloud of _____. 斯诺对霍乱如何致人死地的两种理论都很感兴趣。

Para 6. translation: A woman, who had moved away from ….every day. Para 7. How did people prevent cholera from happening again? 有一位妇女是从宽街搬过来的，她特别喜欢那里的水， 每天都要派人从水泵打水运到家里。 第二种看法是在吃饭的时候人们把这种病毒引入体内的。

Homework 1. 改正作业，注意书写 2. 预习课文并完成以下阅读练习 : 1) What is the main idea of the passage? 2) Which sentence in the passage can be replaced by the following one? The cure and cause of cholera are still uncertain. 3) What does “it” in line 12 refer to? 4) translation a. The second suggested that people absorbed…meals.

b. 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. 5) Why did some houses have no deaths?

Task III. consolidation Finish Ex 1, 4 on Page 4

Homework 1. 缩写课文，字数在 100 字左右。 2. 背诵要求的句子。