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
2013-07-24
6
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 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 migrate in winter to______.
选项
A、find warmth and food
B、raise baby whooping cranes
C、get human help
D、lay eggs
答案
A
解析
题意:芙洲鹤在冬天迁徙以寻找温暖的气候与食物。短文第一段第二句提到“这些鸟飞到南部一些地方,在那里它们可以找到食物并温暖的过冬”。故选A。
转载请注明原文地址:https://kaotiyun.com/show/IpFd777K
本试题收录于:
职称英语综合类B级题库职称英语分类
0
职称英语综合类B级
职称英语
相关试题推荐
Itislogicalthatadetailedlearningofplantsandtheirpropertiesmustbeextremelyancient.Todaypeopleusuallyacquirea
Itislogicalthatadetailedlearningofplantsandtheirpropertiesmustbeextremelyancient.Peoplecan’tsurvivewithoutp
ValuingChildhoodThevalueofchildhoodiseasilyblurred(变得模糊不清)intoday’sworld.Considersomerecentdevelopments:The
HowDidSheConquertheAmericans?African-AmericantalkshowqueenOprahWinfreyistheworld’smostpowerfulcelebrity,acc
Well,you’reatallmanandyoucancarryagooddealofweightwithoutlookingawkward.
TheNewsIndustryinUSWhydosomanyAmericansdistrustwhattheyreadintheirnewspapers?TheAmericanSocietyofNewspa
HumanandCultureHumanbeingsareanimals.Webreathe,eatanddigest,andreproducethesamelifeprocessescommontoal
HumanandCultureHumanbeingsareanimals.Webreathe,eatanddigest,andreproducethesamelifeprocessescommontoal
Thestudentwouldliketoseemoreclassesofferedinwhichsubjects?
随机试题
MOVC,00H指令中源操作数的寻址方式是()
下列关于心肺脑复苏的叙述,正确的是()
男,25岁,2年来有发作性神志丧失,四肢抽搐,服药不规则,今日凌晨开始,又有发作,意识一直不清醒,来院后又有一次四肢抽搐发作。病人目前情况属于下列哪一种
普萘洛尔治疗心绞痛时可产生下列哪一作用
根据《仲裁法》的规定,以下关于仲裁制度的表述,正确的是()。
A公司经过甲介绍成功地向B公司销售了一批货物。下列属于不正当竞争行为的是()。
函数f(x)=展开成x的幂级数为___________.
求
以下关于嵌入式处理器的说法错误的是()。
Ifyou’vekeptupwiththenewslately,you’veprobablyhearddirewarningsaboutavianflu,orbirdflu.It’sahighlyinfectio
最新回复
(
0
)