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1、Unit 1Great scientistscharacteristicradium painter scientificconclude conclusion analysen. 特征特征; 特性特性n. 镭镭n. 画家画家; 油漆匠油漆匠adj. 科学的科学的vt. & vi. 结束；结束； 推断出推断出n. 结论；结束结论；结束vt. 分析分析Words previewput forward draw a conclusion提出提出得出结论得出结论Expressions preview There are some great scientific achievements that
2、have changed the world. Can you name some of them? Match the achievements with the scientists below. Galileo GalileiBenjamin FranklinNewtonAlexander Bell Albert Einsteinthe theory of falling objectslightningthe law of gravitytelephone Scientists Achievementsthe theory of relativityWhat do you know a
3、bout great scientists? Try this quiz and find out who knows the most.1. Which scientist discovered that objects in water are lifted up by a force that helps them float?B. Archimedes C. Thomas EdisonA. Charles DarwinArchimedes (287-212 BC), an ancient Greek mathematician & physicist2. Who wrote a boo
4、k explaining how animals and plants developed as the environment changed?A. Marie B. CurieC. Charles DarwinB. Gregor MendelCharles Darwin (1808-1882), British author of The Origin of Species 3. Who invented the first steam engine?A. ThomasB. NewcomenC. Thomas EdisonB. ArchimedesThomas Newcomen (1663
5、-1729), British,improved the first steam pump and turnedit into a steam engine for taking water out of mines in 17124. Who used peas to show how physical characteristics are passed from parents to their children?A. Thomas B. EdisonC. ArchimedesB. Gregor MendelGregor Mendel (1822-1884), Czech, develo
6、ped ideas on heredity (遗传学遗传学) and inherited (继承继承, 承传承传) characteristics5. Who discovered radium?C. Marie CurieB. NewtonA. Zhang HengMarie Curie (1867-1934), Polish and French, won two Nobel Prizes6. Who invented the way of giving electricity to everybody in large cities?A. Stephen B. Hawking C. Th
7、omas EdisonB. ArchimedesThomas Edison (1847-1931), American inventorThomas EdisonInventions of Thomas Edison Phonograph 留声机留声机Light bulbMotion Pictures7. Who was the painter that studied dead bodies to improve his painting of people?A. Gregor B. MendelC. Marie CurieB. Leonardo da Vinci Leonardo da V
8、inci (1452-1519), Italian artistLeonardo da Vincis paintings8. Who invented a lamp to keep miners safe underground?A. Sir HumphryB. Davy C. FaradayB. Thomas NewcomenSir Humphry Davy (1778-1829), British,discovered the medicinal value of nitrous oxide (一氧化二氮一氧化二氮) as anaesthetic (麻醉剂麻醉剂)9. Who invent
9、ed the earliest instrument to tell people where earthquakes happened?A. Charles B. DarwinC. Watt B. Zhang HengZhang Heng (78-139), Chinese, invented the first seismographseismograph地动仪地动仪10. Who put forward a theory about black holes?A. Stephen B. HawkingC. CopernicusB. ArchimedesStephen Hawking (19
10、42-), British scientist, worked in astronomy and studied black holes in spaceWhat makes ascientist successful?strong will， imagination， creativity， patience， persistence， carefulness， curiosity Do you know how to prove a new idea in scientific research? Discuss in small groups the stages in setting
11、out a new scientific idea. What order would you put them in？Draw a conclusion Think of a method Collect results Make a question Find a problem Analyse the resultsFind supporting evidence Infectious diseases can be spread to other people. They have an unknown causeand need public health care to solve
12、 them. People may be exposed to infectious diseases, so may animals. Bird flu, AIDS and SARS are infectious diseases. Infectious diseases are difficult to cure. What do you know about infectious diseases?What do you know about cholera?What other diseases do you know are similar to SARS today? choleraWhat is Cholera? Cholera is the illness caused by a bacterium（细菌）（细菌） called Vibrio cholerae. It infects peoples intestines(肠肠), causing diarrhea(腹泻腹泻), vomiting and leg cramps. The most common cause of cholera is by someone eating food or drinking water that has been infected with the bacteria.
