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
2023-07-03
24
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/2805607.html
相关试题推荐
[originaltext]Advertisingisthetoolthathasalwaysbeenusedtoconvince
[originaltext]Advertisingisthetoolthathasalwaysbeenusedtoconvince
[originaltext]Neversay"never"butalwaysmentionyour"achievement",ist
[originaltext]Neversay"never"butalwaysmentionyour"achievement",ist
[originaltext]M:Ireallyhadabusyweek.Iwanttogetsomerest.Ialwaysen
[originaltext]M:Ireallyhadabusyweek.Iwanttogetsomerest.Ialwaysen
[originaltext]M:Ireallyhadabusyweek.Iwanttogetsomerest.Ialwaysen
[originaltext]M:Ireallyhadabusyweek.Iwanttogetsomerest.Ialwaysen
Infact,evenwithouthumans,theEarth’sclimatechanges.Someclimatechan
Infact,evenwithouthumans,theEarth’sclimatechanges.Someclimatechan
随机试题
Nationalstandardsforpavedroadswereinplaceby1921.[br]GeneralEisenhowe
"AstronomyClass"[img]2012q1/ct_etoefm_etoeflistz_1027_20121[/img][br]Whatcan
有关数据仓库描述错误的是()。A.数据仓库便于更好地支持决策分析 B.数
使用( )命令释放当前主机自动获取的IP地址。A.ipconfig/all
维生素A严重缺乏可出现A.夜盲症 B.脚气病 C.佝偻病 D.口角
林女士,45岁。心功能不全病史2年,因感冒后出现咳嗽、呼吸困难、乏力入院。现给予
芬太尼类似物,为苯氨基哌啶类合成镇痛药的是
快速静脉滴注庆大霉素,可引起的典型药源性疾病是A.粒细胞减少症 B.消化性溃疡
工业毒性危险化学品可造成人体血液窒息,影响机体传送氧的能力。典型的血液窒息性物质
某冶金联合企业现有2×1680m3高炉,2×90m2烧结机、2×120t转炉,拟
最新回复
(
0
)