首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Could a plant virus have found a way to infect humans? It has always been assumed that plant viruses cannot infect animals, and
Could a plant virus have found a way to infect humans? It has always been assumed that plant viruses cannot infect animals, and
admin
2015-07-31
68
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
【C2】
选项
答案
J
解析
形容词辨析题。分析句子结构可知,空格在making people的后面,因此应填形容词或动词原形。由常识可知,病毒会使人生病,结合备选项应填入sick"生病的"。
转载请注明原文地址:https://kaotiyun.com/show/zSl7777K
0
大学英语四级
相关试题推荐
A、Themancanmoveinaweeklater.B、Themancannottaketheapartment.C、Themanshouldpaintthewholething.D、Themanshoul
WaystoLiveLongerA)WehavetheNHS(theNationalHealthService)andmuchoftherestoftheworldenviesusforit,buthowlo
WaystoLiveLongerA)WehavetheNHS(theNationalHealthService)andmuchoftherestoftheworldenviesusforit,buthowlo
Urbanlifehasalwaysinvolvedabalancingofopportunitiesandrewardsagainstdangersandstress;its【C1】______forceis,inth
Urbanlifehasalwaysinvolvedabalancingofopportunitiesandrewardsagainstdangersandstress;its【C1】______forceis,inth
A、Theydon’thavesupportnetworks.B、Theycannotcopewiththedifficultiesintheirlives.C、Thewomanisfamousforhelpingo
Thepointoffactoryfarmingischeapmeat,madepossiblebyconfininglargenumbersofanimalsinsmallspaces.Perhapsthegre
Boilerroomsareoftendirtyandsteamy,butthisoneispristine(干净的)andcool.FoxPointisaspankingnew47-unit【C1】______bui
Boilerroomsareoftendirtyandsteamy,butthisoneispristine(干净的)andcool.FoxPointisaspankingnew47-unit【C1】______bui
随机试题
四神丸的功用是
3~5岁小儿,反复上呼吸道感染的诊断标准是,每年发生上呼吸道感染
患者咳嗽痰稠带血,咯吐不爽,心烦易怒,胸胁刺痛,颊赤,便秘,舌红苔黄,脉弦数,治疗应首选( )。
制剂配制管理文件包括
《中华人民共和国水污染防治法》规定:存放()的场所,应当采取防水、防渗漏、防流失的措施。
财务预算作为全面预算体系中的最后环节,可以从价值方面总括地反映企业业务预算与专门决策预算的结果,财务预算属于总预算的一部分。()
享有“仙城佛国”美誉的是()。
采购谈判的程序是()。
选做题Ⅰ:以下是有关世界格局变化的材料:材料1我们必须认识到,苏联仍然是美国的一个非常强大、有力和咄咄逼人的竞争者。现在,当我们环顾我们所处的世界时,我们美国已经不再处于十分突出的地位或者完全占支配地位了。……美国仍然是世界上最强、最富的国家,但是
证明:(1)对任意正整数n,都有成立;(2)设an=1+—lnn(n=1,2,…),证明{an}收敛.
最新回复
(
0
)