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
83
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 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:美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://www.kaotiyun.com/show/WsFd777K
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
LongBusRideLongbusridesareliketelevisionshows.Theyhaveabeginning,amiddle,andanend—withcommercialsthrown
LookAfterYourVoiceOftenspeakersatameetingexperiencedrymouthsandaskforaglassofwater.Youcansolvetheprob
TheNeedtoRememberSomepeoplesaytheyhavenomemoryatall:"Ijustcan’trememberathing!"Butofcourseweallhave
AthevolunteersdoBbecauseshedoesnothaveaweightproblemCbecausethelifetherecanbeveryboringDmakepeopleovere
Whatdoestherecentpollshow?WhichofthefollowingisNOTexpectedofapartneraccordingtothispassage?
TheAnimalsinDesertSomedesertanimalscansurvivetheverystrongsummerheatanddrynessbecausetheyhaveveryunusual
TheIcemanOnaSeptemberdayin1991,twoGermanswereclimbingthemountainsbetweenAustriaandItaly.Highuponamountai
Thecontractbetweenthetwocompanieswillexpiresoon.
A.concernedwiththeproblemstosolveinthefutureB.tokeepaheadofscientificadvancesC.havepoliticalimplicationD.a
PrettyGoodWhenSpanishfootballclubBarcelonapaidUS$35millionforRonaldinholastsummer,theyweren’tbuyingaprettyfac
随机试题
Doyouseetheglassashalf-fullratherthanhalf-empty?Suchcliches(陈词滥调)havebecome【C1】______questions,asresearchersexa
细胞凋亡的特征是
某框架一剪力墙结构,抗震等级为一级,第四层剪力墙墙厚250mm,该楼面处墙内设置暗梁(与剪力墙重合的框架梁),剪力墙(包括暗梁)采用C35级混凝土(ft=1.57N/mm2),主筋采用HRB335(fy=300N/mm2)。试问,暗梁截面上、下的纵向钢筋,
以流动性为标准,国债可分为()。
某企业2016年度销售利润率为10%,年销售收入为10亿元,年均总资产为50亿元,权益乘数为200%,则该企业2016年度的净资产收益率为()。
目前上海和深圳证券交易所规定,标的证券发生除息的,行权比例应作相应调整,除权时则不作调整。( )
下列选项中属于主从物关系的有()。
第一部分注意:以下1~15题为英语专业翻译硕士和日语专业翻译硕士考生必做题。“山重水复疑无路,柳暗花明又一村”是谁的诗句?()
向量组α1,α2,…,αa线性无关的充分必要条件是
某一计算机系统连接有三台打印机,其数据传输率分别为:30Mbps,50Mbps,80Mbps。如果采用字节多路通道方式连接这三台打印机,则通道的设计极限流量应不小于(37);如果采用数组多路通道方式连接这三台打印机,则通道的设计极限流量应不小于(38)。
最新回复
(
0
)