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
The Virus Hunters The mouth of the Amazon River has long been a starting place for hunters going to the jungles of Brazil.
The Virus Hunters The mouth of the Amazon River has long been a starting place for hunters going to the jungles of Brazil.
admin
2010-01-10
60
问题
The Virus Hunters
The mouth of the Amazon River has long been a starting place for hunters going to the jungles of Brazil. In recent years it has been, too, the headquarters for a middle-aged American couple who hunt the smallest living things and perhaps the most deadly--viruses. Dr Causey and his wife have discovered more new types and more old ones in new places than all of the other search teams.
Dr. Causey insists that the couple’s success is due more to the number of viruses in the forests of the Amazon than to the skill he and his wife have developed during their eighteen years of work in Brazil.
"We have found the loveliest diseases right in our baekyard," he told me one day as we walked through a light rain along a jungle trail.
"Oh, these viruses are here all right. There is in the jungle a great pool of disease which is carried in the blood of animals and birds. Some of the diseases can be caught by people. It may be that we shall find that the jungle is a great center of virus disease and that it overflows from here to other parts of the world. It may be that birds carry the viruses to far countries. It may be that some viruses which presently reproduce in man without making him ill, may change and become deadly to him. ’Viruses waiting for a disease,’they are sometimes called. This is just an idea, you understand. We do not know, but it is important that we find out, and the first step in finding out is to learn what viruses there are in the jungles."
There is a Brazilian story about the beginning of the world which goes: "When God was making the world he tried to keep everything in balance. When he made a desert, he provided it with some green places. When he made a land that was beautiful, he gave it storms and other terrible things caused by the weather. Where the earth was rich below the surface, it was also made hard to live on, where the land could be farmed, the weather was made too hot or too cold or too dry. Where! there was enough water, God made it so that there should sometimes be too much water.
"But in one place God made a land that was rich, where everything grew easily. Where it was not too hot and certainly not too cold, where animals were plentiful and fruit hung from the trees all the year round."
"The angels looked at this loveliness and were jealous of man. They asked God if this was not too beautiful, too much like heaven, this valley of the Amazon."
And God said, "True, this land looks like heaven, but wait until you see what happens to man when he tries to live in it."
"Viruses waiting for a disease" refers to _________.
选项
A、those viruses carried in the blood of animals
B、some viruses which are at present harmless to man
C、the viruses that reproduce in man without making him iii
D、the still-not-yet-discovered viruses in the jungle
答案
B
解析
从文中第四段“It may be that some viruses which presently reproduce in man without making him ill...”可以判断出,病毒在潜伏期不对人产生病害,因此选B项。
转载请注明原文地址:https://kaotiyun.com/show/Sv6K777K
0
专业英语四级
相关试题推荐
Chinesevisitorsarereceivedwithmixedfeelingsbyoverseasdestinations.Ontheonehand,Chinesevisitorsarethelargestpo
Thefollowingtwoexcerptsareabouttheso-calledTigerMomparentingstyle:beingfiercelystrictmotherorfatherwhopushes
(1)Mymother’shandsaredeepincabbageleaves,hersleevespusheduppastherelbows,asshesiftsthroughwater,salt,andve
(1)Wasthesummitasuccess?Itdependsonthestandardsyouusetomeasureit.CertainlybythestandardsofpreviousG8summit
(1)IwentbacktotheDevonSchoolnotlongago,andfounditlookingoddlynewerthanwhenIwasastudenttherefifteenyears
AuniquesocialphenomenonexistsexclusivelyinChina—chunyun,orSpringFestivalTravelRush.Thefollowingexcerptisabouth
A、Gethelpfuladviceonpotentialjobs.B、Learnpracticalskillsofthefuturejob.C、Askforhigherstartingsalaries.D、Sendo
A、Usefirstnameonly.B、Useanameofcartooncharacters.C、Useaninventedname.D、Usetheirparents’name.CRuth在对话末尾处建议,在网上注
A、Followingclassroominstructions.B、Watchingplentyofmoviesonline.C、Breakingdownculturalbarriers.D、Backpackingaround
Whetheryou’retheCEOofaFortune500company,orateenageentrepreneurjuststartingout,communicationskillsarevitally
随机试题
病理状态下的纤维蛋白沉积不包括
寻找先导化合物的途径有
患儿腰椎穿刺术后,去枕平卧6小时的目的是防止出现
患者,63岁,排便后肛门处剧烈疼痛,触痛明显,最可能的诊断是
科学发展观的根本方法是()
长江公司在A、B、C三地拥有三家分公司,这三家分公司的经营活动由一个总部负责运作。由于A、B、C三家分公司均能产生独立于其他分公司的现金流入,所以长江公司将这三家分公司确定为A、B、C三个资产组。2017年12月31日,因长江公司经营所处的技术环境发生了重
某市出台了一系列惠民政策,但迟迟未落实到某养老服务机构。机构的老人们认为主要原因是机构工作不到位,工作人员努力不够,并不听机构管理者的反复解释,希望直接与有关部门沟通。为此,机构管理者派社会工作者负责处理这个问题。根据社会工作专业价值和伦理守则,社会工作者
教师将自我的教育观念转变及教学能力提升的过程写成自传,通过积极自我反思,从而明确专业发展方向的教育研究方法是()。
海鸥是最常见的海鸟,被称为海上航行安全的“预报员”。下列对海鸥获得“预报员”称号的解释中不符合事实的是:
假设某计算机系统的内存大小为256K,在某一时刻内存的使用情况如下表所示。此时,若进程顺序请求10K、15K和5K的存储空间,系统采用某种算法为进程分配内存,分配后的内存情况如下表所示。那么系统采用的是什么分配算法?()
最新回复
(
0
)