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
36
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
细节题。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/WnU7777K
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
Forthispart,youareallowed30minutestowriteanessayabouttheimpactofsocialnetworkingbyreferringtothesaying"So
A、Kidnapbyaliens.B、Kidnapbyghosts.C、Attackfromseacreatures.D、Transportationtoothertimesandplaces.B短文介绍了百慕大魔鬼三角区飞
A、Womenwouldliketostayathome.B、Peopleweremorefriendly.C、Studentspaidfortheirboard.D、Immigrationwasencouraged.
A、TheJapanesemathematicteachers.B、BoththespeakerandhisGermanfriend.C、BothAmericansandimmigrants.D、Thesonofthe
Oneofthemostcommonimagesofanadvanced,Western-stylecultureisthatofabusy,traffic-filledcity.Sincetheirfirst【B1
Haveyoueverwantedtotravelbackthroughtimeandseewhatlifewaslikeatthedawnofman?Well,museumscanmakehistory【B
A、Shedoesn’twantthemantocallsoearly.B、Sheurgesthemantocallimmediately.C、Sheencouragesthemantodowhateverhe
A、Culture.B、Personality.C、Education.D、Pastexperience.C细节题。Adams博士提到Now,ourpreferencesaredeterminedbymanyfactors,forex
随机试题
肝外胆道包括
X线胶片对射线对比度的放大能力称为
制巴戟天使用的辅料是
采用眼眶CT冠状位检查的原因之一是
镍铬合金全冠抛光所用抛光剂是
北京天明科贸中心与湖南地新制革厂签订了皮衣买卖合同。事后双方另行书面约定“如因皮衣买卖合同发生争议,提交北京市仲裁委员会裁决”。后因送货地点发生争议。天明科贸中心向对方所在地的人民法院起诉,但未说明双方订有仲裁协议,法院受理此案,地新制革厂亦应诉答辩。法院
(2010)纽约古根海姆美术馆展厅布置方式是()。
A公司是一家生产重型机械的公司,其总库存量约为1600万元,在其库存商品中原料库存和产成品库存占绝大的比重,库存持有成本约为20%。目前该公司正计划向中西部地区进行发展,新建更多仓库,将现有的16个仓库,扩建到25个。同时,公司还希望与供应链当中的企业加
下列各项预算中,属于辅助预算或分预算的有()。
根据以下材料,回答下列问题。在某私营公司的一次董事会上,大家就研发部门展开了讨论。副董事长说:我们是私营企业,就应该以盈利为目的。为了节约开支,我建议撤销研发部门,因为公司为研发而支付的费用太高。总经理对此反驳说:我不同意这样
最新回复
(
0
)