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In the past 20 years alone, three coronaviruses have caused major disease outbreaks. First came the original SARS virus in 2002.
In the past 20 years alone, three coronaviruses have caused major disease outbreaks. First came the original SARS virus in 2002.
admin
2022-11-16
53
问题
In the past 20 years alone, three coronaviruses have caused major disease outbreaks. First came the original SARS virus in 2002.【C1】________. in 2012, MERS was identified. In 2019, SARS-CoV-2【C2】________.
Hundreds of other coronaviruses are known to be【C3】________in bats and other animals. Scientists have warned that some of them could arise in the future and【C4】________infect people. Our current COVID-19 vaccines were specifically【C5】________for SARS-CoV-2, but what if a next-generation vaccine could protect【C6】________both known and unknown coronaviruses?
Scientists at the Walter Reed Army Institute of Research are working on a so-called universal coronavirus vaccine. Dr. Kayvon Modjarrad is【C7】________the effort. They have developed a vaccine specifically for SARS-CoV-2, and found that the immune response that it【C8】________is active against all the variants, as well as other coronaviruses like SARS-CoV-1. And this gives them confidence that it can be a platform for the entire coronavirus family.
The vaccine is known as SpFN, which combines nanoparticles from ferritins with coronavirus spike proteins. But making the vaccine wasn’t as【C9】________as attaching one protein to another. Modjarrad and his colleagues had to【C10】________which parts of the spike to attach to which type of ferritin and how to【C11】________the two proteins together. It took months of trying more than 200 different【C12】________. By June of last year, the team found one version that succeeded where others had failed. They then【C13】________the experimental vaccine in mice and monkeys.
The team also turned to less【C14】________animals for testing. Working with scientists in India, they【C15】________horses with the vaccine to learn how strong the【C16】________response was. And they【C17】________with Helen Dooley at the University of Maryland to vaccinate sharks—which make special antibodies.
The results are【C18】________. but animals aren’t people. The Army vaccine is now being tested in a small, early-stage trial in humans.【C19】________it works and is safe, it could lay the【C20】________for a universal coronavirus vaccine.
【C3】
选项
A、publicizing
B、residing
C、circulating
D、detecting
答案
C
解析
空格词所在句意思为“已知有数百种其他冠状病毒在蝙蝠和其他动物中________”,需要填入一个动词,与助动词be构成现在进行时形式。根据常识可知,蝙蝠和一些动物可能会“携带或传播病毒”,所以空格词应与“携带”或“传播”相关。四个选项中,只有选项circulating符合条件,circulate有“传播”的意思,故C项为答案。ABD三项的意思分别为“宣传”“居住”“发现”,代入原文,均不符合文意,故排除。
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0
考研英语二
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