How long to quarantine after a positive COVID-19 test? The CDC define the difference between quarantine and isolation as: Quarantine: You need to be in quarantine when you have been exposed to the virus and you may or may not be infected. Isolation: You need to isolate when you are infe...
People didn't know how serious Covid-19 was eight doctors including Li Wenliang told them. A: unless B: until C: while 相关知识点: 试题来源: 解析 B 考查连词辨析。选项分析:unless 除非;until 直到……才……;while 当……时候 。句意:直到李文良等8名医生告诉人们时,人们才意识新冠肺炎有多严重...
根据COVID- 19(新冠肺炎)is breaking out around the world now"新冠肺炎现在在世界各地爆发"可知,它"扼杀"了我们重返学校的机会。用kills。故选:A.--新冠肺炎现在在世界各地爆发。--太可怕了!它扼杀了我们重返学校的机会。动词是表示动作或者是状态的词,要结合语境,辨析选项动词意思,选择合适答案完成试题。
China has recently approved more than 10 kinds of COVID-19 antigen self-test kits. The National Health Commission suggested that three groups of people should use them: 1. People who develop symptoms within five days. 2. People in quarantine, such as close contacts of COVID-19 patients, ...
Because the COVID-19 recession was partly self-induced, the tendency is to assume it will be short. This was the rationale behind President Trump’s since-abandoned proposal to reopen the economy in mid-April. But this idea is incorrect. As long as there is significant community spread of ...
On this week's Headline Buster Special, we're walking through a COVID-19 timeline, focusing on three voices: China, the World Health Organization, and U.S. President Donald Trump. Who did what when is starting to matter more and more as accusations against China and the WH...
COVID19 is a new disease. Current understanding about how the virus spreads is largely based on what is known about similar coronaviruses(冠状病毒). The virus is thought to spread mainly from person to person, especially between people who are in close contact with one another (within abo...
A virus(病毒) called COVID-19 is spreading(传播) fast how. Lots of people in the world get sick. People usually show symptoms(症状), such as(例如) runny nose, cough, breathlessness(呼吸困难) and fever. There are some things we can do to protect(保护) ourselves, family and friends:...
COVID-19 precautions taken in 2020 disrupted efforts to eliminate several neglected tropical diseases by 2030, which could delay some regions from
and the deaths and hospitalizations," he says. And this reflects vaccination rates against SARS-CoV-2, thecoronavirusthat causes COVID-19 in more vulnerable populations. "The vaccination was protecting the people that were the most at risk," he says. "Those vaccines are working like a charm....