高中英语人教版 (2019)选择性必修 第二册Unit 1 Science and Scientists教学课件ppt

这是一份高中英语人教版 (2019)选择性必修 第二册Unit 1 Science and Scientists教学课件ppt，共13页。PPT课件主要包含了John Snow，skilled，attend to，theories，evidence，process，conclusion，solution，air，marked等内容，欢迎下载使用。
D yu knw hw t prve a new idea in scientific research?
seven stages
7 stages in right rder
What is Chlera?
Chlera used t be ne f __________________________in the wrld . It infects peple’s intestines(肠), causing diarrhea(腹泻), dehydratin and even death.
Jhn Snw rse t___________________________ in Lndn. S _________(技艺精湛的），indeed, that he even ____________ Queen Victria when she gave birth.
the mst feared diseases
becme a famus dctr
What happened in 1854?
Hw many peple died in 10 days?
Chlera utbreak hit Lndn.
3. Why is there n death at N. 20 and 21 Brad Street as well as at N. 8 and 9 Cambridge Street? 4.When Snw _____________________, chlera was at an end.
These families had nt drunk the water frm the Brad Street pump.
had the handle f the pump remved
Read the passage again and cmplete the chart belw.
It was believed that lera was caused by bad ____________ r germs in________________.
Snw____________ the places where the peple wh____________had lived.
Many deaths ccurred near the ____________in Brad Street.
Sme peple__________drunk the water frm the pump , and lived.
A wman and her daughter died in anther part f Lndn after___________.
The pump water carried_________________.
The __________________f the pump was remved.
mving away frm Brad Street
chlera germs
4 Hw has Jhn Snw 's wrk affected ur daily lives?
His wrk can prtect peple frm being killed by the severe disease. Furthermre, it tld us we shuld prtect ur envirnment frm being plluted.
Fill in the blanks accrding t the text. One wrd fr ne blank r give the prper frms f the given wrds.
In the early 19ty century, an utbreak f chlera hit Eurpe, and millins f peple died frm the disease. Hwever, n ne knew hw _________________(prevent) r treat chlera. Jhn Snw, a British dctr, had a strng desire t destry chlera nce and fr all. At that time, there were tw ___________________(cntradict) theries t explain hw chlera spread. One thery was that bad air caused chlera. The ther was that chlera____________________(cause) by an infectin frm germs in fd r water. Snw subscribed t the latter. He needed __________________(prve) t prve that it was crrect. In 1854, an utbreak f chlera___________________(strike) Lndn.
cntradictry
Snw began t invesstgate. He discvered that the chlera utbreak was very severe in tw particular streets. He marked n a map the exact places_________________ all thse wh died had lived, nly t find that multiple deaths were near the water pump in Brad Street. Snw suspected that the water pump was t blame. Besides, a wman and her daughter in anther part f Lndn died f chlera after they drank the water_______________ the pump. As a result f this evidence, Jhn Snw drew a cnclusin that the pump water carried chlera germs. After he had the handle _________________(remve) frm the pump, chlera was stpped in its tracks. Thrugh Snw's tireless effrts, the treat f chlera saw_____substantial decrease. Mrever, in his use f maps and statistics, Snw transfrmed the way _________________(scientist )study diseases. Jhn Snw is cnsidered the father f mdern epidemilgy.
What cnditins allwed chlera t develp?Pay little attentin t
Public health
Persnal hygiene
1. ne f the mst feared diseases2. never lse the desire t d sth3. in general4. nce and fr all5. mark n a map the exact places6. mve away frm7. have sth. delivered t the huse8. be stpped in ne's tracks9.thrugh ne's tireless effrts10. a man with great scienific thught and scientific spirit