国际病毒分类委员会和世界卫生组织分别宣布致病病毒叫SARS-CoV-2,而疾病名称是COVID-19。请问简称中的“covid”是代表的是什么呢?
A. cold virusdisease
B. coronavirus disease
C. coronaviral disease
D. cold viral disease
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Coronaviruses are_____viruses that typically affect the_____system of mammals, including humans.
A. a kind of; digestion
B. a family of;respiratory
C. /; SARS
D. many; blood circulation
Since the o_______ of Covid-19 last December, thousands of Chinese has been under quarantine.
WHO的全称是world health organization, 即世界卫生组织。
A. 对
B. 错
Please match the words and phrases with their Chinese translation.