句意:——这些天来,我们国家有很多人正在接种疫苗。——是的。接种疫苗是防止人们感染新冠肺炎的最好方法。 考查句子时态和主谓一致。a number of“大量的”,修饰复数名词时,谓语动词用复数。根据“these days.”可知句子是一般现在时,be动词用are,故选B。反馈 收藏 ...
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"We know from a vaccine standpoint that the more mutations a single variant has, the more immunity you really need to have in order to combat that variant, which is why right now we're really pushing to get more people vaccinated and more people boosted to really boost that immunity in e...
inappreciable Antonyms great large huge vast enormous infinite Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002 Want to thank TFD for its existence?Tell a friend about us, add a link to this page, or visitthe webmaste...
新冠疫情概况The number of people who have died worldwide(世界范围)in the Covid-19 pandemic has beenover 3 million, according to Johns Hopkins University.The head of WHO(世卫组织) warned the world wasapproaching(接近)the highestrate of infection(感染率).India recorded more than 230,000 new ...
For measles, herd immunity is achieved when 92 to 95 percent of the population is immune. This protects people who cannot be vaccinated, such as newborn babies and people with severely compromised immune systems. (MORE: Measles: What we know and don't know about the disease) However...
The seriousness of this pandemic has meant that millions of people have changed the way their entire life operates. This study aims to understand the impacts of COVID-19 on work behaviour, i.e., work from home and commuting, and its effect on the transport network. Data was collected in ...
This is a great opportunity for airports, airlines, stakeholders, and DMOs help add value to local products, bet on tourist quality and design customized products with high added value, as long as the pandemic lasts, and every-one is vaccinated (Florido-Benítez, 2021a, Florido-Benítez, ...
We strongly encourage vaccination and boosters for all employees, and the vast majority are currently vaccinated against COVID 19 Social distance – We strive to keep groups separated as much as possible during the licensing and outfitting process, but our real strength in social distancing is ...
This is called “herd immunity”, which protects thepeople who get hurt easily, including those who can't bevaccinated for medical reasons, babies too young to getvaccinated and people on whom the vaccine doesn't work.But herd immunity works only when nearly the whole herdjoins in. When ...