解析 B 句意:由于新型冠状病毒仍在快速传播,接种疫苗是非常必要的。before在……之前;since由于;although尽管;unless除非。根据“ the COVID-19 is still spreading rapidly, getting a vaccine(疫苗) is quite necessary”可知,“新型冠状病毒仍在快速传播”是接种疫苗的原因,用since引导原因状语从句,故选B。
1COVID-19 is still spreading around the world.To fight the disease,scientists have developed different vaccines(疫苗).By now,millions of people have gotten COVID-19 vaccines. (1)___? Vaccines help teach the immune system(免疫系统) about what challenges might look like.They prepare the body ...
For 2021, there's only one issue that will matter for higher education: COVID. The pandemic is impacting every aspect of higher education, including technology, curriculum, learning, grades, COVID testing, campus safety, mental health, enrollment, mergers, closures, layoffs, and fundraising.doi:...
The World Health Organization (WHO) on Monday warned that the new coronavirus pandemic is still worsening globally, despite reductions in infections and deaths across Europe. Around the world, the coronavirus has killed more than 400,000 people, with the toll rising by thousands every day. The...
“This emphasis on the high-risk population is true,” Schaffner said. “However, we still see occasional young, healthy people who get hit with COVID, who wind up in the emergency room and have to be admitted to the hospital. So just because you're completely healthy and young...
COVID-19 is still spreading in many countries, but it is not easy to detect. Many people who catch the virus clearly show signs of being ill, like having a fever or coughing. But many show no signs at all and they can still pass the virus to others. The virus got tons of attention...
句意:由于 COVID-19 仍在迅速传播,接种疫苗是非常必要的。 考查连词辨析。 A. before 在……以前,引导时间状语从句; B. since 由于,引导原因状语从句; C. although 尽管,引导让步状语从句; D. unless 除非,引导条件状语从句。 分析语境可知,前半句是一个原因状语从句,空处表示“由于”。 故选:B。结果...
这句话第一强调的是 COVID-19, 第二强调的是 increase, 因为这句英文表达的就是 COVID-19 与 ...
Management of the COVID-19 pandemic has proven to be a significant challenge to policy makers. This is in large part due to uneven reporting and the absence of open-access visualization tools to present local trends and infer healthcare needs. Here we report the development of CovidCounties....
【TED】比尔▪盖茨:我们必须如何应对疫情(中英)How we must respond to the COVID-19 pandemic Bill Gates 39 -- 4:31 App 【科普】新冠是如何作用于人体的?(中英)How COVID-19 Affects People With Diabetes, Cancer, And Other 255 -- 1:59 App 【科普】世卫组织警告:COVID-19在亚洲和太平洋地区还...