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
Operation Migration If you look up at the sky in the early fall in the northern part of North America, you may see groups of
Operation Migration If you look up at the sky in the early fall in the northern part of North America, you may see groups of
admin
2013-06-24
38
问题
Operation Migration
If you look up at the sky in the early fall in the northern part of North America, you may see groups of birds. These birds are flying south to places where they can find food and warmth for the winter. They are migrating(迁徙). The young birds usually learn to migrate from their parents. They follow their parents south. In one unusual case, however, the young birds are following something very different. These birds are young whooping cranes, and they are following an airplane!
The whooping crane is the largest bird that is native to North America. These birds almost disappeared in the 1800s. By 1941, there were only about 20 cranes alive. In the 1970s, people were worried that these creatures were in danger of disappearing completely. As a result, the United States indenti-fied whooping cranes as an endangered species that they needed to protect.
Some researchers tried to help. They began to breed whooping cranes in special parks to increase the number of birds. This plan was successful. There were a lot of new baby birds. As the birds became older, the researchers wanted to return them to nature. However, there was a problem: These young birds did not know how to migrate. They needed human help.
In 2001,some people had a creative idea. They formed an organization called Operation Migration. This group decided to use very light airplanes, instead of birds, to lead the young whooping cranes on their first trip south. They painted each airplane to look like a whooping crane. Even the pilots wore special clothing to make them look like cranes. The cranes began to trust the airplanes, and the plan worked.
Today, planes still lead birds across approximately 1, 200 miles(1, 931 kilometers), from the United States-Canadian border to the Gulf of Mexico. They leave the birds at different sites. If a trip is successful, the birds can travel on their own in the future. Then, when these birds become parents, they will teach their young to migrate. The people of Operation Migration think this is the only way to maintain the whooping crane population.
Operation Migration works with several other organizations and government institutes. Together, they assist hundreds of cranes each year. However, some experts predict that soon, this won’t be necessary. Thanks to Operation Migration and its partners, the crane population will continue to migrate. Hopefully, they won’t need human help any more.
Whooping cranes are native to______.
选项
A、North America
B、Mexico
C、South America
D、the Persian Gulf
答案
A
解析
题意:美洲鹤原产于北美洲。短文第二段第一句提到“美洲鹤是原产于北美洲最大的鸟类”。故选A。
转载请注明原文地址:https://kaotiyun.com/show/XsFd777K
本试题收录于:
职称英语综合类C级题库职称英语分类
0
职称英语综合类C级
职称英语
相关试题推荐
NewChangesinAmericanLifeOnceitwaspossibletodefinemaleandfemaleroleseasilybythedivisionoflabor.Menworke
Abouteightmillionschool-agechildrenarehomealoneafterschool.Thesearethehourswhenthenumberofviolentcrimespeaks
Accordingtothepassage,whichofthefollowingisthemostpollutingenergyresource?China’sThreeGorgesDam
"HappyBirthdaytoYou"ThemainproblemindiscussingAmericanpopularcultureisalsooneofitsmaincharacteristics:itwon’
Businesshasslowed,layoffsmount,butexecutivepaycontinuestoroar-atleastsofar.BusinessWeek’sannualsurveyfindstha
PlantsinDesertOnlyspecialplantscansurvivetheterribleclimateofadesert,fortheseareregionswheretheannualra
TheU.S.facessevereeconomicproblems.
Sheseemedtohavedetectedsomeangerinhisvoice.
SpoiltforChoiceSomeresearchwhichwasrecentlycarriedoutinBritainhasconfirmedwhatmanyordinaryshoppershavesus
SpoiltforChoiceSomeresearchwhichwasrecentlycarriedoutinBritainhasconfirmedwhatmanyordinaryshoppershavesus
随机试题
结核菌素试验假阴性反应见于
慢性支气管炎最常见的并发症是
甲公司向乙公司签发了一张银行承兑汇票,丙银行进行了承兑,乙公司将汇票背书转让给丁公司,丁公司将汇票背书转让给张某,后张某又将汇票背书转让给乙公司,乙公司向银行提示付款时被拒绝,乙公司可以向谁行使追索权?()
甲企业销售库存商品一批,收到价款200万元,该批商品成本170万元,已提存货跌价准备35万元,应结转销售成本()万元。
2012年第三季度全国100个城市的公共就业服务机构市场中,用人单位通过公共就业服务机构招聘各类人员约643.3万人,进入市场的求职者约610万人,岗位空缺与求职人数比率比上年同期上升了1%。……2012年第三季度,在所有求职人员中:失业人员所占比
关于道德的本质,下列说法中符合马克思主义观点和立场的有()
[*]
—MustIfinishitbefore10o’clock?—No,you________.
Directions:Inthispart,youwillhave15minutestogooverthepassagequicklyandanswerthequestionsonAnswerSheet1.Fo
象征幸福的圆圆的甜甜的汤圆(dumpling)是在元宵节(LanternFestival)吃的传统食物。现在,在中国这些汤圆也是一种流行的甜点。汤圆有两种:一种是由白糖和红糖(brownsugar)、带香甜味的桂花(osmanthus)、坚果(nut)
最新回复
(
0
)