A (2020·葫芦岛市质检)
Since the beginning of 2020, COVID 19 1.has caught(catch) the world's attention, and here's something you need to know about it.Coronaviruses are a common cause of colds and upper respiratory(呼吸的) infections in humans and certain other 2.mammals(mammal) and birds.The microbes can 3.easily(easy) spread from one animal to another.Every now and again, an animal coronavirus mutates(突变) to infect humans, 4.leading(lead) to contagious respiratory infections that have never been met before.This makes 5.it harder for physicians to diagnose(诊断) and cure, and results in outbreaks.The symptoms of COVID 19 6.are(be) similar to those experienced when people suffer from the flu.They include fever, cough, tiredness, muscle pain 7.and shortness of breath.Some victims have also experienced severe headaches and diarrhea.Coronaviruses typically pass through droplets.Therefore, scientists recommend 8.taking(take) simple precautions, like wearing masks, washing hands frequently and thoroughly, and staying away from people displaying flulike symptoms.Those experiencing any of the symptoms 9.associated(associate) with the virus are advised to cover their coughs and sneezes with their inner elbows(肘)．Most importantly, however, they should stay away from school, work, or any public area 10.where they might risk infecting others.
