a microphone for my presentation???……РThis story begins with……Р2Р2020/11/29РРA bat!!!!Р3Р2020/11/29РРРРРThe novel coronavirus has affected human life. We all hope they disappear soon. But viruses have never disappeared from human history.Р4Р2020/11/29РРIt is not exaggerated to say that the history of human is the history of the struggle against viruses.Р5Р2020/11/29РРPSР6Р2020/11/29РРPSР7Р2020/11/29РРРSpeaking of Ebola, many people think he is scary and associate it with zombies……Р8Р2020/11/29РРРРIt is indeed very dangerous, it’s biosafety level is 4. And AIDS is Level 2 and SARS is Level 3.Рbiosafety level(BSL)生物安全等级РLevel 2РLevel 3Р9Р2020/11/29РРРEbola virus first emerged in 1976 in outbreaks of Ebola hemorrhagic fever in Zaire and Sudan.Р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。Р10Р2020/11/29
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