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
All through the ages the bat has been a creature of great mystery. Bats have influenced the imagination of the Western World sin
All through the ages the bat has been a creature of great mystery. Bats have influenced the imagination of the Western World sin
admin
2014-11-27
56
问题
All through the ages the bat has been a creature of great mystery. Bats have influenced the imagination of the Western World since the first Spaniards returned from the Americans. They told tales of hairy, winged creatures that flew from caves to feed on the blood of man and animals. The vampire bat, which became a well-known figure in the folk tales of many countries, exists only in the Americans.
The vampire bat is not like the common bat. Its teeth have grown sharper. In the days before Columbus, bat fed on wild animals, but with the introduction of farm animals into the New World by the Spaniards, they were offered a new kind of food. They attacked the cattle which sickened and died and the colonists didn’t know why. It was only in 1908 that farmers in Brazil discovered that the bite of the vampire bat could cause rabies and this was the disease that was killing their cattle. For the first time it was recognized that the bite of a vampire bat could carry the virus of rabies. The cattle of eastern Mexico were especially troubled by this disease.
Many efforts were made by the farmers in Mexico to destroy the bats. They blew up their caves or covered the entrances to caves with nets. All these ways were too slow, too costly, or else didn’ t work.
Since they could not remove the bats, the Mexican government and World Health Organization got together in 1952 to develop a cheap dependable supply of the vaccine against rabies at a factory in Mexico. A quarter of a million cattle have been vaccinated at a cost of fifty cents per animal to the owners. In one state alone, death among cattle has fallen from 56% to 1%. Control of the disease in animals seems to be in sight. This will reduce but not destroy the threat that bats may pass the disease to human beings.
Vampire bats like human blood best. Whole villages in Guatemala have disappeared because of the frequency with which bats fed on sleeping children. A study made in Trinidad showed that in thirty houses checked in one village, twenty persons had been bitten by bats. Teachers reported that half of the children coming to school showed signs of having been bitten in the night.
A health research office, which has been collecting information since 1949 about the home and movements of bats, has started work on a book about bats. Various other health organizations also are making new studies. It is hoped that answers to this health problem will soon be found.
According to this passage, rabies is a disease which______.
选项
A、is still a mystery
B、can be controlled
C、has been eliminated
D、is impossible to deal with
答案
B
解析
主旨题。文章第四段通过举例,证明狂犬病可通过接种疫苗得到控制,因此,正确答案是B。
转载请注明原文地址:https://kaotiyun.com/show/jtm7777K
0
大学英语六级
相关试题推荐
A、Thenetworkofbusinessangels.B、Thelocationofthecompany.C、Thebusinessowner’spersonality.D、Thecompany’sadvertiseme
Assecretaryofeducation.ArneDuncanisoverallyresponsibleforgradesK(kindergarten)through12.Someofthe$4billio
Assecretaryofeducation.ArneDuncanisoverallyresponsibleforgradesK(kindergarten)through12.Someofthe$4billio
Assecretaryofeducation.ArneDuncanisoverallyresponsibleforgradesK(kindergarten)through12.Someofthe$4billio
Assecretaryofeducation.ArneDuncanisoverallyresponsibleforgradesK(kindergarten)through12.Someofthe$4billio
ShouldWeCompareOurselvesWithOthers?1.有些人认为有比较才有进步2.有些人认为攀比会造成不良后果3.我的看法
A、Nomeltinghasbeenobservedinharshweather.B、TheweatherinAntarcticahasalwaysbeencomfortable.C、Nothingunusualhas
WetendtothinkofthedecadesimmediatelyfollowingWorldWarIIasatimeofprosperityandgrowth,withsoldiersreturningh
A、Itoccursforanumberofreasons.B、Itoccurswithchangesinpersonality.C、Itoccursfromsadness,shock,anger,andsoon.
随机试题
肱二头肌腱内侧毗邻()
简述子宫的功能。
Publicrelationsismanagementfunctionthatcreates,develops,andcarriesoutpoliciesandprogramstoinfluencepublicopinio
最严重的石膏综合征是()。
Theworldisknowntousthroughmanysenses,notjusthearing,smell,vision,andatcloserange,touchandtaste.Ourski
患者,女性,59岁,患"脑梗死"2年,症见右半身不遂,语言不利,小便清长,气短神疲,舌质淡暗,脉涩弱者。治宜选用
下列选项中,不属于设计方案比选原则的是()。
甲企业已提取法定盈余公积120万,已提取任意盈余公积80万元,已提取法定公益金30万元,现决定用盈余公积资金给职工修建浴室,需花费3万元,请问可以使用的资金是( )。
根据以下资料,回答问题。截至2014年末,我国共有博物馆3658个,占文物机构总数的43.5%。全国文物机构拥有文物藏品4063.58万件,比上年末增加222.77万件。其中,博物馆文物藏品2929.97万件,文物商店文物藏品770.00万件。文物藏品中
A、Strangersareusuallyoflittlehelp.B、Oneshouldtakecareoftheirbike.C、Newsreportsmakepeoplefamous.D、Anactofkin
最新回复
(
0
)