首页
登录
职称英语
Could a plant virus have found a way to infect humans? It has always been as
Could a plant virus have found a way to infect humans? It has always been as
游客
2024-02-04
45
管理
问题
Could a plant virus have found a way to infect humans? It has always been assumed that plant viruses cannot infect animals, and vice versa, but plant viruses are known to be【C1】______in human faeces(粪便).
Now Didier Raoult at the University of the Mediterranean in Marseille, France, and his team think a pepper virus is making people【C2】______, too. They have found RNA from the pepper mild mottle virus in the faeces of 7 percent of the 304 adults they tested. Those with the virus were more【C3】______to report fever, abdominal pain and itching(痒)than those without it, his team found.
Not everyone is convinced, however. Because Raoult looked at many possible【C4】______, he would be expected to find a few that randomly【C5】______more common in virus-positive people, says Robert Garry, a virologist at Tulane University in New Orleans, Louisiana. Moreover, in order to enter a cell and replicate, a virus must bind to a receptor on its surface, and a plant virus would be highly unlikely to【C6】______a receptor on a human cell, says Garry.
One possibility, Raoult says, is that the virus does not infect human cells【C7】______. Instead, the naked viral RNA may alter the【C8】______of the cells through a mechanism similar to RNA interference, in which the presence of certain RNA sequences can【C9】______genes on and off. Raoult’s team is now working to【C10】______more direct evidence that the virus does infect humans.
A)abundant F)function K)situations
B)appear G)gather L)surprisingly
C)available H)likely M)symptoms
D)capacity I)recognise N)tested
E)directly J)sick O)turn [br] 【C6】
选项
答案
I
解析
动词辨析题。空格在不定式符号to和a receptor之间,因此应填动词原形。根据句意,植物病毒不大可能——人类细胞受体,结合选项来看,只有recognise“识别”符合句意,故为答案。
转载请注明原文地址:http://tihaiku.com/zcyy/3421870.html
相关试题推荐
[originaltext]Problemsarealwaysencounteredinone’slifetobefacedand
[originaltext]Problemsarealwaysencounteredinone’slifetobefacedand
[originaltext]Problemsarealwaysencounteredinone’slifetobefacedand
Urbanlifehasalwaysinvolvedabalancingofopportunitiesandrewardsagai
Urbanlifehasalwaysinvolvedabalancingofopportunitiesandrewardsagai
Urbanlifehasalwaysinvolvedabalancingofopportunitiesandrewardsagai
Urbanlifehasalwaysinvolvedabalancingofopportunitiesandrewardsagai
[originaltext]Mathewlivedinabigcity,andalwayshadhishaircutbyth
[originaltext]Mathewlivedinabigcity,andalwayshadhishaircutbyth
[originaltext]Mathewlivedinabigcity,andalwayshadhishaircutbyth
随机试题
健康信念模式的组成部分包括A.个人认知 B.行为提示因素 C.修正因素 D
关于组织内的声波衰减程度的一般规律,下列错误的是A.血液比肝脾声波衰减小 B.
适用于除掉旧的防腐层(漆膜)或带有油浸过的金属表面工程,不适用于薄壁的金属设备、
冬虫夏草药材的显微特征是A.子座中央充满菌丝,每个子囊内有2~8个线形子囊孢子;
Thechangeinthatvillagewasmiraculou
《幼儿园工作规程》指出,幼儿园应制订合理的幼儿一日生活作息制度,两餐间隔时间不少
女,58岁。右下6缺失,行双端固定桥修复。固定桥试戴时,用力戴入后,基牙出现胀痛
结构简单,易于制作,操作容易,移动方便,一般用于起重量不大,起重速度较慢又无电
对于其他项目中的计日工,投标人正确的报价方式是()。A.按政策规定标准估算
岩石分级是根据()的大小。A.开挖深度 B.天然湿度下平均密度 C.坚
最新回复
(
0
)