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
48
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] 【C9】
选项
答案
O
解析
动词辨析题。由情态动词can可知,空格所在分句缺少谓语,因此应填动词原形,且能与后面的on and off搭配。结合选项可知,turn“转动”符合题意。
转载请注明原文地址:https://tihaiku.com/zcyy/3421873.html
相关试题推荐
[originaltext]Problemsarealwaysencounteredinone’slifetobefacedand
Urbanlifehasalwaysinvolvedabalancingofopportunitiesandrewardsagai
Urbanlifehasalwaysinvolvedabalancingofopportunitiesandrewardsagai
Urbanlifehasalwaysinvolvedabalancingofopportunitiesandrewardsagai
Urbanlifehasalwaysinvolvedabalancingofopportunitiesandrewardsagai
[originaltext]Mathewlivedinabigcity,andalwayshadhishaircutbyth
[originaltext]Mathewlivedinabigcity,andalwayshadhishaircutbyth
[originaltext]Mathewlivedinabigcity,andalwayshadhishaircutbyth
[originaltext]Mathewlivedinabigcity,andalwayshadhishaircutbyth
Coca-Colahasalwaysbeenmorefocusedonitseconomicbottomlinethanong
随机试题
OnedaysomeofBill’sfriendssaw______inhisgarden.[br]Billputthetarge
Thedaysofhisyouthappearedlikedreamsbeforehim,andherecalledtheseri
TheLegendofSleepingHallowisashortstorywrittenbyA、JamesFenimoreCooper
TheVirusHuntersThemouthoftheAmaz
Themid-and-late19thcenturyisgenerallyknownastheVictorianage,contro
二、考题解析 【教案】 Teachingaims: Knowle
下列哪项一般不会引起全口义齿基托折裂A.咬合力不平衡 B.基托较薄 C.牙槽
A.多潘立酮 B.奥美拉唑 C.阿托品 D.前列腺素E E.西咪替丁抑制
煤酚皂的制备是利用何种原理A、改变溶剂 B、制成盐类 C、增溶作用 D、助
口号是意识的一种表现形式,适量适度、通俗易懂、提炼准确的口号,对鼓舞士气、振奋人
最新回复
(
0
)