【答案】B 【详解】 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。before 在...以前, 引导时间状语从句;since 由于,引导原因状语从句; although 尽管,引导让步状语从句;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。 反馈 收藏...
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。
The decision to include Covid shots in the free vaccine program will prove crucial to maintaining access for many children.As many as 5.3 million kids are expected to lose health insurancethrough Medicaid or the Children's Health Insurance Program whenev...
Filed underCOVID-19 Vaccine Mark Lennihan / AP Photo / Bloomberg via Getty Images Now that the world has successfully completed history’s fastest development of a new vaccine, you might be wondering why we don’t always just make one this fast. If the Pfizer and Moderna vaccines are safe...
However, Offit also said that he doesn’t agree with recommendations from the U.S. Centers for Disease Control and Prevention (CDC) that everyone 6 months and older get a COVID vaccine. “We're one of only two countries that do that,” Offit noted. “Most countries -- like cou...
The current vaccines are highly effective at preventing people from getting seriously sick with COVID-19. But even if vaccinated people don't get sick, they might still get infected without showing any symptoms. Experts think thevaccinewould also curb the chances of those people spreading the vir...
考查从属连词辨析。As soon as-...就...;Since由于;Although尽管;So that 以便。根据“getting a vaccine (疫苗) is quite necessary.”可知注射疫苗是非常有必要的,因此新冠肺炎正在迅速传播,因此应用since 引导原因状语从句。故选B。 反馈 收藏
However, as we all know, SARS-CoV-2 has the ability to mutate, leading to new waves of covid-19 infection that can cause illness and death, strain healthcare services, and harm the economy. This is why vaccine research remains vital to our ongoing protection from covid-19. The National...
How many people in the US have developed myocarditis after Covid-19 vaccination? As of May 31, nearly 170 million Americans had at least one dose of the Covid-19 vaccine, according to the US Centers for Disease Control and Prevention. Through that time, fewer than 800 cases of myocardi...
Even if you've had COVID-19, you should still get vaccinated. A COVIDvaccinemay offer more reliable and sustained immunity than a previous infection. At the very least, it will add an extra layer of targeted protection. Here's how ourimmune responseworks after a natural infection versus a...