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
28
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] 【C4】
选项
答案
M
解析
名词辨析题。空格在many possible的后面,因此应填可数名词的复数形式。根据句意可知,针对人类是否会感染植物病毒,Raoult研究了很多可能的______,结合上文提到的发烧等可知,symptoms"症状"符合题意,故为答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3421868.html
相关试题推荐
[originaltext]Problemsarealwaysencounteredinone’slifetobefacedand
[originaltext]Problemsarealwaysencounteredinone’slifetobefacedand
[originaltext]Problemsarealwaysencounteredinone’slifetobefacedand
Urbanlifehasalwaysinvolvedabalancingofopportunitiesandrewardsagai
Urbanlifehasalwaysinvolvedabalancingofopportunitiesandrewardsagai
Urbanlifehasalwaysinvolvedabalancingofopportunitiesandrewardsagai
Urbanlifehasalwaysinvolvedabalancingofopportunitiesandrewardsagai
[originaltext]Mathewlivedinabigcity,andalwayshadhishaircutbyth
Coca-Colahasalwaysbeenmorefocusedonitseconomicbottomlinethanong
Coca-Colahasalwaysbeenmorefocusedonitseconomicbottomlinethanong
随机试题
Tothemajorityofus,musicisanindispensablepartofourdailylife.Itc
Businessesarestructuredindifferentwaystomeetdifferentneeds.The【B1】
WhatdidJimCantalupopromiseataWallStreetmeetingonApril7?[br][origi
2013年3月17日,习近平总书记在第十二届全国人大第一次会议上发表重要讲话,深
以下有关平衡膳食的阐述不正确的是A.膳食中鱼、肉、奶、蛋所占的比例较高 B.膳
灯杆的接地电阻为()。A.≤1Ω B.≤4Ω C.≤8Ω D.≤10Ω
施工总承包资质企业:可以从事资质证书许可范围内的相应()等业务A、工程总承包
关于初级卫生保健内涵的说法,下列哪项是正确的A.初级卫生保健成本低廉,居民乐于接
2020年10月6日,中共中央政治局就量子科技研究和应用前景举行第二十四次集体学
品德的心理结构包括道德认识、()和()三个成分。
最新回复
(
0
)