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
32
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/2805602.html
相关试题推荐
[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
[originaltext]M:Ireallyhadabusyweek.Iwanttogetsomerest.Ialwaysen
Infact,evenwithouthumans,theEarth’sclimatechanges.Someclimatechan
Infact,evenwithouthumans,theEarth’sclimatechanges.Someclimatechan
Infact,evenwithouthumans,theEarth’sclimatechanges.Someclimatechan
随机试题
______,VincenteT.Ximenesspentmanyyearsasagovernmenteconomist.A、Sonof
下列不属于景区经营管理制度的是()。A.产权安排 B.组织结构 C.景区
A.主要发生在远曲小管和集合管 B. C. D.pH降低时肾小管碳酸酐酶的
与基因组学不一样,蛋白质组学是一个开放的、非概念化的、动态的领域。正如专家所说的
A.发散B.缓急C.收敛D.泄降E.软坚甘味药物的作用是
(2012年初)审计机关的权限包括( )A.检查权 B.制止权 C.调查
关于抵押物的转让,下列说法正确的有()。A.在抵押期间,抵押人转让已办理抵押登
被称为“教育学之父”的教育家是()。A.赫尔巴特 B.裴斯泰洛齐 C.布
A.www.ashp.org B.www.merck.com C.www.c
下列情形中,没有侵犯劳动者就业平等权的是()A.某公司提供的劳动合同文本中,约定
最新回复
(
0
)