【课件】Unit+1+Science+and+Scientists+Reading+and+Thinking+课件人教版（2019）选择性必修第二册

ar

D0athronUnit

1So

ENCEANDSCIENTISTSDr.John

SnowP1Readingand

Thinking—Understandthequestioningmindhttp://www.xybs.comU

N

I

Thttp:hww

COVID-19:aninfectiousdisease.Itwasdiscoveredinthehumanbody

in

2019.Thevirusisgenerallycharacterisedby

fever,dry

cough

and

gradually

dyspnea(逐渐出现呼吸困难)。

Theviruswasconfirmed

tobewiththephenomenonofhuman

transmissionandhave

latent(潜在的)infection.Thedisease

hadnospecifictreatmentat

that

time,soitbrokeoutin2020

and

swept

theglobe.We

knowsomethingaboutCOVID

19,butthereisstill

muchwedon'tknowabouti计.We

still

need

timetofigurethemout.Howmany

stagesareneededtoset

out

a

scientificresearch?Doyou

know

howto

provea

new

idea

in

scientificresearch?uuPossible

analysetheresultsansWIntheearly

19thcentury,asimilarinfectiousdisease

hit

Europe.Now,let's

read

a

passage

about

it

to

see

if

the

order

you

decided

wascorrect.

Whatorderwouldyouputthemin?

P21Readthetitleand

predict.JohnSnowDefeats“KingCholera”Who

?

How?

What

?Mainidea:Thetextismainlyabout_John

Snowand

how

he

defeat

King

CholeraReadandfinish

the

tasks

asquicklyaspossible.http:hww

WhileHowdidJohn

Snow

defeatKingCholera?What'stheresultsandsignificanceof

JohnSnow'swork?WhatisKing

Cholera?Who

is

John

Snow?What'sthe

truth

ofKing

Cholera?Readthepassagequicklyandmatchthe

main

idea

of

eachpart.Para.1Paras.2-3

Para.4

Para.5hp//ww

xgb

comWhen?In

the

early19th

centuryWhere?EuropeWhat's

the

result?Millions

of

people

died

from

the

diseaseWho?

A

British

doctorwhoevenattendto

QueenVictoriawhen

shegave

birth.What?Hehadadesiretodestroy

choleraonceandforall.Task1.

Readthe1stparagraphquicklyandfillinthemindmap.What?It'soneofthemost

feared

diseases

intheworld,becauseitcausesseverediarrhoea,dehydrationand

evendeathCholeraJohn

SnowTask

2

P33d

:

Many

deaths

oe

a:

ec

germs

in

.le

hadn't

conclusiondrunkthewaterfromthepump,and

lived.

E:

The

handleB:Snow

marked

on

◆A

woman

and

her

of

the

pumpa

map

theplacesdaughter

died

in

another

was

removed.wherethepeoplewhopart

of

London

after

solutiondiedhadlivedprocessdrinking

waterfrom

the

pumpMatchthefollowingheaderswiththelettersfromthechartabove.Write

A-E

in

the

blanks.

P34

1.conclusion2.evidence

3.process4.solution

5.theoriesD

B

EpeoptreeteSSomroaddpiemrruapterThwDccurreaevidenc◆CthatcholerawasA:Itwasbelievecaused

by

badair

or

near

the

water

pumpin

cholera

germsfoodorwater.theoriesResult:Thewater

came

from

the

river

which

hadbeenpolluted

by

the

dirty

water

from

London.新教材PH23The

water

from

the

pumpwas

toblame.NDGE

STRU△No

death

happened

here.

multiple

deathshappened

here.34Clue:free

beer

from

public

housePublic工house

IRBMU十WN-I26

25

24272830OrderStageKev

words

or

sentencesEXAMPLE1Find

a

problemTwo

contradictory

theories2Ask

a

question3think

of

a

method4collect

data5analyse

the

resultsit's6find

supporting

evidenceturn7draw

a

conclusionhfrp:/Auw

xgb

comSnowbeganby

markingonamap

theexact

placeswhere

all

hosewho

died

had

lived.There

were

multiple

deaths

near

the

water

pump

in

Broad

Street

(especially

house

numbers

16,37.

38,and40]Howeversome

households

(suchas20and21

Broad

Street,and

8and

9

Cambridge

Street]had

had

no

deaths.These

peopleworked

in

the

pub

at

7

Cambridge

Street.They

had

been

givenfree

beer,and

so

had

not

drunk

thewater

fromthe

pump[Snowsuspected

that

thewater

pump

was

to

blame.Whatis

more,inanotherpart

of

London,a

woman

and

herdaughterhaddiedof

cholera

after

movingthinkofamethod

一

collectdata。analysetheresultsEMs-πF

supportingevidenceCheckyouranswerS.findaway

fromBroadStreet.Itseemedthat

the

womanliked

the

waterfrom

thepump

somuchthatshehadit

delivered

to

her

house

every

day.As

a

result

ofthis

evidence,John

Snowwas

able

to

announce

that

the

pump

water

camied

cholera

germs.Accordingly,he

hadthe

handleofthepumpremovedso

thatitcouldnotbeused.Through

thisintervention,thedisease

was

stopped

in

its

tracks.findaproblemal,doctorsinthosedayshad

twocontradictory

theories

to

explain

how

cholera

spreaa.

One

theory

was

that

bad

air

caused

the

disease.Anotherwas

that

cholera

wasparticular

streets

the

cholera

outbreak

was

so

severe

that

more

than

500

people

died

inten

days.He

was

determined

to

find

out

why.caused

by

an

infection

fromgerms

in

food_or

water

Snow

subscribed

to

the

secondtheory.Itwascorrect,buthe

still

of

cholerahitLondonin1854,Snodraw

aconclusionaska

questionbutbreak

bt

intwo7

stages

ofa

scientificresearchhfrp:/ww

xgb

com<Fillintheblanksand

reviewthe

7

stages.Aslk_aquestionRindaproblemRimdsupportingevidenceDrawa

conclusionAmallyse

theresultsCollect_dataThimkofa

method

Task4.ReadPara.4and5

carefullyto

answerthefourquestions.

Task4.ReadPara.4and5carefullyto

answerthefour

questions.

1.WhatcausedtheoutbreakofcholerainLondonin

1854?ThewaterwhichcamefromtheRiverThamesand

had

been

infectedbywaste.

Task4.ReadPara.4and5

carefullyto

answerthefourquestions.

Para.5:..Fortunately,we

now

know

how

to

prevent

cholera,thanks

tothe

work

of

John

Snow.Moreover,in

his

use

of

maps

andstatistics,Snow

transformed

the

way

scientists

study

diseases.n.统计数字Task4.ReadPara.4and5carefullyto

answerthefourquestions.3.WhywasJohn

Snow

consideredthefather

ofmodern

epidemiology?1.Hehelpedpeopleknowhowtoprevent

cholera.2.Hetransformedtheway

scientists

study

diseases

in

use

of

mapand

statistics.Para.4:ThetruthwasthatthewaterfromtheBroadStreetpumphadbeeninfectedbywaste....Thepeoplewhodrankthiswaterweremuchmorelikelytogetcholerathanthosewhodrankpureorboiledwater.a.干净的Task4.ReadPara.4and5carefullyto

answerthefourquestions.4.Howcanwepreventcholera?Bydrinkingpureorboiledwater.1.Q:WhatdidSnowthinkcholerawas

caused?

A:SnowthoughtthatcholerawascausedbyAskquestionsOnewaytoapproacha

reading

passage

istoaskquestionsabout

it.Askingquestionscan

helpyouunderstandthecontent.It

can

alsohelpyou

thinkmoredeeplyaboutthetopic.5.

Q:HoWwasunecnoreraunreataereateaA:Thecholerathreatwasdefeatedthanksto

theworkof

JohnSnow.Whatquestionswouldyouaskto

getthe

followinganswers?P35Complete

the

graphic

organizer

and

then

retell

retell

how

JohnSnowdefeated“King

Cholera”accordingtoit.died

from

cholera,caused

by

bad

air

_

.

the

secondbut

no

one

knew

Theory2:Cholera

was

theory.He

beganhow

to

prevent

or

caused

by

an

infection

from

to

investigate

。treat

it.germs

in

food

or

waterAmalyse

theresulltsThere

were

multipledeathsnear

the

waterpump

in

BroadStreet

.Somehouseholds

had

nodeaths

because

theydrank

free

beer.Snowsuspected