1、Unit 1 Science and ScientistsReading and ThinkingCONTENTSLeading-inWhile-classAfter-classPart 1Part 1Part 2Part 2Part 3Part 3Part.1Leading-inLeading inWhat do you know about this person?Leading inMany years ago,a terrible disease named cholera in the world killed millions of people.People were very
2、afraid of it,but they didn t know what to do.Luckily,a young doctor decided to find out how to prevent and treat the disease.Finally,the doctor won the battle.John Snow Part.2While-class1 severe adj.极为恶劣的；十分严重的；严厉的搭配 be severe on 对严厉be severe with oneself 严于律己severe weather 恶劣的天气severe looks 严肃的表情se
3、vere disease 严重的疾病The professor is rather severe on his students.教授对学生相当严厉。We must be severe with ourselves.我们必须严于律己。2 once and for all 最终地；彻底地The archaeologist will explain the theory fully once and for all.考古学家将彻底地解释这个理论。The teacher has warned the student once and for all.那位老师已断然警告那个学生。【学法点拨】与 onc
4、e and for all 具有相同含义的短语还有 once for all。I will explain it once for all.我会彻底解释清楚。3 infection n.感染；传染Air，water，clothing and insects are all means of infection.空气、水、衣服及昆虫都会成为疾病的传染媒介。Ear infections are common in pre-school children.耳部感染在学前儿童中很常见。【词语积累】（1）infect vt.使感染；传染be infected with 感染上，传染上Anyone wit
5、h a bad cold may infect the people around him.任何得重感冒的人都可能把疾病传染给周围的人。The severe injuries will soon become infected.严重的伤口很快就会被感染。Some people can be infected with the disease and have mild symptoms.有些人可能感染了这种疾病，症状轻微。（2）infectious adj.感染的，传染性的4 subscribe vi.认购（股份）；定期订购；定期交纳（会费）搭配subscribe to 订阅（报纸、杂志等）；
6、签字认可，同意；向捐赠subscribe for 预订；认购I would like to subscribe to a Dictionary of American Slang.我要订一本美国俚语词典。We subscribed to a few journals.我们订阅了几本期刊。I was unwilling to subscribe to the contract，but it seemed that I had no choice.我不愿在合同上签字，可又似乎别无选择。Only mad people would subscribe to such views.只有疯子才会赞同这种观
7、点。How many shares did you subscribe for in the new company?你在这家新公司认购了多少股？5 suspect v.&n.（1）vt.&vi.怀疑；疑有；不信任搭配suspect.of.怀疑有罪suspect.to be/as 怀疑是The police suspect him of having taken the money.警察怀疑钱是他偷的。I suspected him to be a liar.我料想他是一个说谎者。The police dont know who committed the crime，but they sus
8、pect Jones.警察不知道谁作的案，但他们怀疑琼斯。（2）n.犯罪嫌疑人；可疑对象The police couldnt prove the suspects guilt.警察不能证实嫌疑犯的罪行。Read the title and predict.John Snow Defeats“King Cholera”Who?How?What?Para1 Para 2 Para 4Para 5 John Snow desired to destroy cholera.John Snow decided to prove the second theory.Snow began his study
9、 by marking on the mapand the process.Truth of the infection of choleraSnows contributionsPara 3 Read the passage quickly and get the main idea of each paragraph.Skimming:main idea of each paragraphPara1 Para 2 Para 4Para 5 Para 3 1.What caused the outbreak of cholera in London in 1854?The water whi
10、ch came from the River Thames and had been infected by waste.Para.4:The truth was that the water from the Broad Street pump had been infected by waste.Some companies sold water from the River Thames that was polluted by raw waste.Task3.Read Para.4 and 5 carefully to answer the four questions.2.Was c
11、holera destroyed completely?No.Para.5:Through Snows tireless efforts,water companies began to sell clean water,and the threat of cholera around the world saw a substantial decrease.However,cholera is still a problem.Each year,millions of people around the world get cholera and many die from it.Task3
12、.Read Para.4 and 5 carefully to answer the four questions.3.Why was John Snow considered the father of modern epidemiology?1.He helped people know how to prevent cholera.2.He transformed the way scientists study diseases in use of map and statistics.Para.5:Fortunately,we now know how to prevent chol
13、era,thanks to the work of John Snow.Moreover,in his use of maps and statistics,Snow transformed the way scientists study diseases.n.统计数字Task3.Read Para.4 and 5 carefully to answer the four questions.4.How can we prevent cholera?By drinking pure or boiled water.Para.4:The truth was that the water fro
14、m the Broad Street pump had been infected by waste.The people who drank this water were much more likely to get cholera than those who drank pure or boiled water.a.干净的Task3.Read Para.4 and 5 carefully to answer the four questions.Part.3After-classIn our daily life,in order not to get infected with the infectious disease,such as cholera,AIDS,SARS,what should we do？Wash hands oftenchoose fresh sea foodKeep the kitchen cleandeal with rubbish properly.Drink boiled waterDont forget to wear a mask when you go out.Discussion:Critical ThinkingThank you！
