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
23
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
【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://kaotiyun.com/show/Kcl7777K
0
大学英语四级
相关试题推荐
A、HenormallypracticesoralEnglisheveryday.B、HealwaysspeaksEnglishwithhisbestfriend.C、HeoftenpracticesEnglishon
A、SophialikesDavidverymuch.B、Sophiaalwayssurpriseseveryone.C、DavidlikesfollowingSophia.D、DavidoftenbreaksSophia’
A、Themancanmoveinaweeklater.B、Themancannottaketheapartment.C、Themanshouldpaintthewholething.D、Themanshoul
Thepointoffactoryfarmingischeapmeat,madepossiblebyconfininglargenumbersofanimalsinsmallspaces.Perhapsthegre
Boilerroomsareoftendirtyandsteamy,butthisoneispristine(干净的)andcool.FoxPointisaspankingnew47-unit【C1】______bui
Boilerroomsareoftendirtyandsteamy,butthisoneispristine(干净的)andcool.FoxPointisaspankingnew47-unit【C1】______bui
Boilerroomsareoftendirtyandsteamy,butthisoneispristine(干净的)andcool.FoxPointisaspankingnew47-unit【C1】______bui
Boilerroomsareoftendirtyandsteamy,butthisoneispristine(干净的)andcool.FoxPointisaspankingnew47-unit【C1】______bui
Boilerroomsareoftendirtyandsteamy,butthisoneispristine(干净的)andcool.FoxPointisaspankingnew47-unit【C1】______bui
随机试题
甲公司为增值税一般纳税人,该企业购进固定资产相关的增值税额可以抵扣,适用的增值税税率为17%。甲公司2010年至2013年与固定资产有关的业务资料如下:(1)2010年11月1日,甲公司以自营方式建造一条生产线。购入工程物资,取得的增值税专用发票
西安市某旅行社欲聘具有特定语种语言能力的李某临时从事导游活动按照《导游人员管理条例》,应()。
【2015年河北省直.单选】建构主义理论认为学习的四大要素是()。
人民政协的主要职能是()。
20世纪,道.琼斯指数从66点涨至11497点,看似巨大,其实每年只增长了5.3%,按这个速度,到2099年,道.琼斯指数将是两百万。如果有人许诺每年给你百分之十的增长,那么,道.琼斯指数则必须在2099年12月31日达到2400万点。这个简单的算术题就能
20年市场经济改革,把中国经济送上了持续增长的快车道,把在现代化道路上艰苦跋涉的中国人推上了一个高峰。然而,_______,我们一刻都不曾忘记发展中那些“不平衡、不协调、不可持续”的风险隐患;_______,“发展起来以后的问题不比不发展时少”。
要绘制一张代表6个国家R,S,W,X,Y和Z的地图,相邻的国家不能使用相同的颜色。相邻的国家如下所述:(1)R,S,X和Y都与W相邻;(2)X与Y相邻;(3)R和S都与Z相邻。下面哪一对国家的颜色可以相同?
VisualFoxPro中,索引分为主索引、【】、【】和普通索引。
小李是东方公司会计,为节省时间,同时又确保记账的准确性,她使用Excel编制了员工工资表。请根据考生文件夹下“Excel素材.xlsx”中的内容,帮助小李完成工资表的整理和分析工作。具体要求如下(提示:本题中若出现排序问题则采用升序方式):在“分类汇总
A、Stoptalkingsomuch.B、Buysomemedicine.C、Turndownthevolume.D、Rewritethepaper.CW:Look,I’msorrytobotheryouabou
最新回复
(
0
)