高中英语必修5第一单元u1-Warming-up-and-Reading-新人教版必修5(课堂PPT).ppt

Unit 1Great scientistsGreat Scientists1Do you know their names?2The works of scientists make life much easier and more comfortable.They make great contribution to social development.3 hard-workingWhat qualities do you think they have in common?modestimaginative determined devoted wise carefulcreative4Archimedes He was an ancient Greek mathematician.He found if you put an object into water,the water pushes the object up.Lets learn about some scientists.5He wrote The Origin of Species.It explained how animals and plants developed as the environment changed.Charles Darwin6He improved the first steam pump built by Thomas Savery and turned it into a steam engine for taking water out of mines.Later James Watt turned it into the first modern steam engine used on the railways.Thomas Newcomen7 He used peas to show how physical characteristics are passed from parents to their children.Gregory Mendel8She discovered radium in 1898.She received two Nobel Prizes,one for physics and one for chemistry.Marie Curie9 He invented the way of giving electricity to everybody in large cities.Thomas Edison10Leonardo da Vinci He was a famous artist.He used to study dead people in order to make his paintings as accurate as possible.11He developed a safety lamp for miners in 1815.It made working conditions underground very much safer.Sir Humphry Davy12He invented the first seismograph to indicate in the direction of an earthquake.Zhang Heng13He put forward a theory about black holes.Stephen Hawking14THINKWORK FINDHow do the scientists usually do scientific research?The processFind a problemMake a questionThink of a methodCollect results Analyse the resultsFind supporting evidenceDraw a conclusionSOLVE15What infectious diseases do you know about?16Things to do to prevent infectious diseases:Wash your hands often,especially during cold and flu season.Be aware of what you eat,and be careful how you prepare it.Use antibiotics exactly as prescribed.Be cautious around all wild and domestic animals that are not familiar to you.Avoid areas of insect infestation.17 Cholera is the illness caused by a bacterium called Varian cholera.If it infects peoples intestines(肠胃肠胃),it may cause diarrhea,vomiting and leg cramps(腹痛腹痛).The most common cause of cholera is by someone eating food or drinking water that has been polluted by the bacteria.What do you know about cholera?18Cholera can be mild(不严重的不严重的)or even without symptoms(症状症状),but a severe case can lead to death without immediate treatment.19Do you know this person?John Snow(1813 1858)a legendary figure in the history of public health,epidemiology（流行病学流行病学）and anesthesiology（麻醉学）麻醉学）20Whats 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 John Snow collected,analyzed data and found the cause of the disease and solved it.Fast readingd21Use the seven stages in setting out a new scientific idea to describe each paragraph.Careful reading22ParagraphStagesGeneral ideas1Find a problem The _ of cholera causesComprehending 232Theory two:When people _ cholera into their bodies with meals,their bodies were attacked and soon they died.Theory one:Cholera _ in the air and dangerous gas floated around until it found its victims.Make up a question multipliedabsorbed243Think of a method To _ the second theory was correct.prove2545Collect results Some information was _ on how many people died and where they got water.Analyse results _the water to see if that is the cause of the illness.gatheredAnalyse2667find supporting evidence With extra _,it was announced definitely that _ water carried cholera.Make a conclusion Polluted water spread cholera.“King Cholera”was _.evidencepolluteddefeated27Read the text carefully and choose the best answers.1.Whats the purpose of the text?A.To show us how difficult it was to find a cure for cholera.B.To tell us how John Snow found the cause of cholera and the cure for it.C.To show us how difficult it was to carry out experiments at that time.D.To tell us the way cholera spread and how serious it was.B282.Which of the following is TRUE ccording to the text?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.John Snow felt unsure about the cause of cholera after he finished the map.D293.Why was cholera called“King Cholera”in the text?A.Because cholera caused many deaths.B.Because it got its name from Queen Victoria.C.Because cholera was the most deadly disease of its day.D.Because it was defeated with the help of the king.C30 1.What do you know about Dr.John Snows being well-known in London?He attended Queen Victoria to ease the birth of her babies.Questions313.Did people know how to cure the disease?2.From what disease did Londoners suffer in his age?They exposed themselves to cholera.324.When did Dr.Snow think the disease would be controlled?He knew he would never be controlled until its cause was found.People absorbed this disease into their bodies with their meals.5.What was the second theory explaining how the disease killed people?336.How serious was the disease outbreak in London?The cholera outbreak was so severe that more than 500 people had died in 10 days.34The map gave a valuable clue about the cause of the disease.7.Did the map which Dr.Snow draw help find the cause of the disease?Many of the deaths were near the water pump in Broad Street.8.Where were many of the deaths in Broad Street?359.Why did some houses have no deaths?These families worked in the pub at 7 Cambridge Street.They were given free beer and so had not drunk the water from the Broad street pump.36It seemed the water was to blame.10.What did Dr.Snow think was responsible for the disease?He told the people to remove the handle from the water pump so it could not be used.11.What did Dr.Snow advised the people in Broad Street do?3712.What else did Dr.Snow find in another part of London that were linked to the Broad Street outbreak?In addition,he found 2 other deaths.13.What conclusion did Dr.Snow tell the public?He announced that polluted water carried the disease.3814.What did Dr.Snow tell the water companies?They were not to expose people to polluted water anymore.instructed39Group Discussion1.John Snow believed Idea 2 was right.How did he finally prove it?John Snow finally proved his idea because he found an outbreak that was clearly related to cholera,collected information and was able to tie cases outside the area to the polluted water.402.Do you think John Snow would have solved this problem without the map?No.The map helped John Snow organize his ideas.He was able to identify those households that had had many deaths and check their water-drinking habits.He identified those houses that had had no deaths and surveyed their drinking habits.The evidence clearly pointed to the polluted water being the cause.413.Cholera is a 19th century disease.What disease do you think is similar to cholera today?Two diseases,which are similar today,are SARS and AIDS because they are both serious,have an unknown cause and need public health care to solve them.42Fill in the blanksJohn Snow was a _ doctor in London.There was the most deadly _ called“King Cholera”of its day.Every time there was a(an)_,many people died.John Snow wanted to face the _ and _ this problem.He knew that it would never be _ until its cause was found,At that time,there were two theories about cholera.The first suggested that cholera _ in the air.famousdiseaseoutbreakchallengesolvecontrolledmultiplied43The second suggested that people _ this disease into their bodies with their_.John Snow _ the second theory was correct but he needed evidences.So he _ data to test the two theories.He _ on a map where the dead people had lived and the map gave a _ clue about the cause of the disease.absorbedmealssuspectedcollectedmarkedvaluable44It seemed that the water was to _.Next,John Snow looked into the _ of the water for these streets.He found two other deaths in another part of London that were _ _ the Broad Street outbreak.With enough evidence,he announced _ _ that _ _ carried the virus of cholera.blamesourcelinkedtowithcertaintypollutedwater45Homework1.Learn more about great scientists.2.Review the vocabulary.3.Read the text carefully.4647