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
2017-02-24
70
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.
After being bitten by vampire bats, the cattle sickened and died because______.
选项
A、the bite of any bat was fatal
B、the cattle had been injured seriously
C、the cattle had been infected with rabies
D、the bats could pass an unknown disease
答案
C
解析
细节题。根据题干关键词可定位至文章第二段,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(直到1908年,巴西的农民发现蝙蝠的咬痕会诱发狂犬病,这就是牛暴病而亡的原因)。因此,正确答案是C。
转载请注明原文地址:https://kaotiyun.com/show/JnU7777K
0
大学英语六级
相关试题推荐
TrustMe,I’maRobot[A]Withrobotsnowemergingfromtheirindustrialcagesandmovingintohomesandworkplaces,roboticists
TrustMe,I’maRobot[A]Withrobotsnowemergingfromtheirindustrialcagesandmovingintohomesandworkplaces,roboticists
TrustMe,I’maRobot[A]Withrobotsnowemergingfromtheirindustrialcagesandmovingintohomesandworkplaces,roboticists
A、Aneffectivetooltohelpformwomen’sfriendship.B、Awaytounderstandandappreciatefriends.C、Anaccessthatawomancan
Haveyoueverwantedtotravelbackthroughtimeandseewhatlifewaslikeatthedawnofman?Well,museumscanmakehistory【B
A、Togetafeedbackaboutthephone.B、Tofindoutwheretheproblemlies.C、Togetthephonefixedimmediately.D、Toapologyfo
A、Theyhavebettermemoriesthannormalpeople.B、Theycanfocusonmultipletasksatatime.C、Theirbrainshavebeentraineda
Forthispart,youareallowed30minutestowriteanessayonsuccessbyreferringtothesaying"Youcannevercrosstheocean
Forthispart,youareallowed30minutestowriteanessayonpreparationbyreferringtothesaying"Byfailingtoprepare,yo
随机试题
领导者折衷地在关心人和关心工作两者问求得平衡的领导行为类型是
某儿童已1周岁,仅接种了麻疹、风疹、腮腺炎联合疫苗,按国家计划免疫程序,该儿童应补种的疫苗是
起重机械的位置限制与调整装置是用来限制机构在一定空间范围内运行的安全防护装置。下列装置中,不属于位置限制与调整装置的是()。
土石坝施工中,非黏性土的砂砾石填筑标准中的相对密度不应低于()。
甲公司2015年年初递延所得税负债的余额为零,递延所得税资产的余额为30万元(系2014年年末应收账款的可抵扣暂时性差异产生)。甲公司2015年度有关交易和事项的会计处理中,与税法规定存在差异的有:资料一:2015年1月1日,购入一项非专利技术并立即用于
向某与A单位签订了为期三年的劳动合同,至2021年12月31日到期。2020年2月1日,向某因与确诊新冠肺炎患者有密切接触进行了居家隔离。向某第一时间向A单位进行了汇报,表示因隔离无法继续上班。隔离期满后,向某去单位报到,但A单位表示向某被隔离后没有正常上
《合同法》第249条规定:“当事人约定租赁期间届满租赁物归承租人所有,承租人已经支付大部分租金,但无力支付剩余租金,出租人因此解除合同收回租赁物的,收回的租赁物的价值超过承租人欠付的租金以及其他费用的,承租人可以要求部分返还。”在该法律规则中,假定条件是(
Astelevisionbringssomeunfavorableeffectsonpeople,somesuggestthatweshoulddoawaywithtelevision.Sinceyouconsider
Blindpeopleusuallypossessoneadvantageoverotherpeoplewhocansee:theirsenseofhearingisfarmoreacute.Soundswhich
A、Theyarelostduetomodernsociety’sexpansion.B、Birdsarerestingonthemduringmigration.C、Furtherstudyisneededtoin
最新回复
(
0
)