太和一中2019-2020高一第二学期期末考试 英语试题 第二部分 阅读理解（共两节，满分40分） 第一节（共15小题；每小题2分，满分30分） 阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。 A Coronaviruses ( 冠状病毒) Coronaviruses are a large group of viruses. They consist of a core of genetic material(遗传物质) surrounded by an envelope with protein spikes(蛋白棘突). This gives it the appearance of a crown. Crown in Latin is called “corona” and that’s how these viruses get their name. In this text, we’ll take a quick look at what’s currently known about the virus. Covid-2019 The 2019 Novel Coronavirus, first reported December in Wuhan, central China's Hubei Province, has quickly spread across the country and around the world. It initially occurred in a group of people with pneumonia(肺炎) who’d been associated with a seafood and live animal market in the city of Wuhan. Intermediate hosts(中间宿主）: The Covid-2019 may originate in bats, a team led by renowned Chinese virologist Shi Zhengli said earlier, while the intermediary host remains unknown. Incubation period( 潜伏期): usually 1-14 days. Infection: Virus may spread before symptoms show.
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