病毒的英文介绍课前演讲课件

成型191410邢玉薪EnglishclasspresentationThisisastoryaboutviruses……病毒的英文介绍课前演讲WhyamIathome?Whydon'tIgotoschool?WhydoIuseacomputerandamicrophoneformypresentation?……Thisstorybeginswith……病毒的英文介绍课前演讲Abat!!!!病毒的英文介绍课前演讲Thenovelcoronavirushasaffectedhumanlife.Weallhopetheydisappearsoon.Butviruseshaveneverdisappearedfromhumanhistory.病毒的英文介绍课前演讲It

is

not

exaggerated

to

say

that

the

history

of

human

is

the

history

of

the

struggle

against

viruses.病毒的英文介绍课前演讲PS病毒的英文介绍课前演讲PS病毒的英文介绍课前演讲SpeakingofEbola,manypeoplethinkheisscaryandassociateitwithzombies……病毒的英文介绍课前演讲

Itisindeedverydangerous,it’sbiosafetylevelis4.AndAIDSisLevel2andSARSisLevel3.biosafetylevel(BSL)生物安全等级Level2Level3病毒的英文介绍课前演讲Ebolavirusfirstemergedin1976inoutbreaksofEbolahemorrhagicfeverinZaireandSudan.埃博拉病毒最早于1976年在扎伊尔和苏丹地区爆发埃博拉出血热时被发现。病毒的英文介绍课前演讲ThestrainofEbolathatbrokeoutinZairehasoneofthehighestcasefatalityratesofanyhumanvirus,roughly90%.扎伊尔型埃博拉病毒的致死率高达90%，是致死率最高的几种人类病毒之一。病毒的英文介绍课前演讲Symptomsincludevomitinganddiarrhea(腹泻),fever,weakness,headacheandsorethroat.病毒的英文介绍课前演讲Finally,manyorgansturnintoblood.病毒的英文介绍课前演讲Ifyouwanttoknowmoreabouthim,YoucanwatchTheHotZone.（《血疫》）病毒的英文介绍课前演讲Anddon’tforget…病毒的英文介绍课前演讲BlackDeath病毒的英文介绍课前演讲Plague病毒的英文介绍课前演讲黑死病的名字来源于患者由于皮肤和组织的损坏全身遍布黑色斑.Thisnamecomesfrompatientswithblackspotsalloverthebodyduetoskinandtissuedamage.病毒的英文介绍课前演讲IfEbolaisthesickle(镰刀)ofthedeath,thentheBlackDeathisthedeathitself.病毒的英文介绍课前演讲病毒的英文介绍课前演讲Itkilled25millionEuropeans,accountingforone-thirdoftheEuropeanpopulationatthetime.它夺走了2500万欧洲人的性命，占当时欧洲总人口的1/3。病毒的英文介绍课前演讲在20世纪，这堪称人类史上最为惨烈的第二次世界大战，欧洲因战争而死去的总人数仅为其人口的5%。Inthetwentiethcentury,itwascalledtheworstWorldWarIIinhumanhistory,thetotalnumberofpeoplewhodiedinEuropeduetowarwasonly5%ofitspopulation.病毒的英文介绍课前演讲病毒的英文介绍课前演讲Theirfacesarehiddeninabird'sbeakmask,whichisfilledwithcottonandotherfillersforprotection.Theyhavealongstickintheirhandstotouchpatients.病毒的英文介绍课前演讲Smallpox病毒的英文介绍课前演讲Smallpox病毒的英文介绍课前演讲Haveyoueverhadchickenpox?Littlesurvey:病毒的英文介绍课前演讲病毒的英文介绍课前演讲Smallpoxisoneoftheoldestinfectiousdiseasesrecordedbyhumanbeings.

Wecaninferthatsmallpoxhasbeenragingforatleast3,000yearsinhumanhistory.天花是人类有记载的最古老的传染病之一。可以推断，天花至少在人类历史上肆虐了3000多年。病毒的英文介绍课前演讲However,suchaterriblediseasewascompletelyextinctinMay1980,becomingtheonlyinfectiousdiseasetobecompletelyeradicatedbyhumanssofat.然而，这么一个可怕的病魔，却在1980年5月被宣告彻底消灭，成为迄今为止人类唯一彻底消灭的传染病。病毒的英文介绍课前演讲病毒的英文介绍课前演讲vaccine病毒的英文介绍课前演讲The

virus

is

an

unsolved

mystery.

We

don‘t

know

where

it

came

from

or

how

to

deal

with

it.

It

is

like

a

vine(藤蔓)

on

the

tree

of

evolution,keepingbreeding.Butourhumanstrugglewillnotstop.病毒的英文介绍课前演讲Wearamask,washyourhandsfrequentlyandgatherless.病毒的英文介绍课