The novel coronavirus(冠状病毒), which____1____(originate)in the Chinese city of Wuhan and has now spread to 12countries, has much in common ____2___ seasonal flu. They are both viralinfections, share similar symptoms and crucially(关键地) can spread from human to human. In themidst of flu season in much of the northern hemisphere, ____3___(tell) thedifference between the two will be vital in stopping its spread.

　　Human coronaviruses, of which there are four, can causerespiratory (呼吸道)infectionssimilar to flu: while many symptoms are mild, both can lead to pneumonia(肺炎) andbecome lethal(致命的). ___4___, the novel coronavirus is moreserious than __5__ "typical influenza infection,(流感)"says Ian Jones, a professor of virology at the University of Reading.

　　"Thisvirus appears to go___6___(far) down into the lungs than would generally be thecase. Therefore, it will give you___7___ (symptom) of pneumonia(肺炎): thelungs becoming flooded, they don't function very well and the patient gets intobreathing difficulty."

　　Whilethe mortality rates and symptoms of flu and novel coronavirus may end up beingsimilar, humans' ability ___8____(fight) off the viruses differs greatly.

　　Humanshave naturally built up antibodies to seasonal flu and annual vaccines____9____(develop) to fight it. During a pandemic(流行病), whichthe new coronavirus has the potential to become, "there is no immunity(免疫性) in the population so you have potentialfor a ___10___(globe) spread," warns Jones.

　　参考答案：

　　1、originated

　　2、with

　　3、telling

　　4、However

　　5、a

　　6、further

　　7、symptoms

　　8、to fight

　　9、have been developed

　　10、global

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