首页
财务会计
医药卫生
金融经济
考公考编
外语考试
学历提升
职称考试
建筑工程
IT考试
其他
登录
职称考试
共用题干 第三篇Operation MigrationIf you look up at the sky in the early fall in th...
共用题干 第三篇Operation MigrationIf you look up at the sky in the early fall in th...
admin
2020-12-24
17
问题
共用题干
第三篇
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 1 800s.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 identified whooping
cranes as an endangered species that they needed to protect.
Some researchers tired 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 approxlmately 1,200 mniles(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 whlooping
crane population.
Operation Migration works with several other organizations and government institutes.Together,they as-
sist 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.
选项
The distance covered by the young whooping cranes on their trip south is_____________.
A:1,200 miles
B:120 miles
C:1,931 miles
D:2,000 miles
答案
A
解析
由文章第一段第二句话,"These birds are flying south to places where they can find food and warmth for the winter.”可知,高鸣鹤迁徙到南方是因为在那些地方过冬它们可以找到食 物,并且天气也暖和。故选C。
由文章第二段第一句话可知,选D。
由文章第四段第三句话,"This group decided to use very light airplanes, instead of birds, to lead the young whooping cranes on their first trip south.”可知,迁徙行动这一组织决定用轻型 飞机来带领年轻一代的高鸣鹤首次往南迁徙。
由文章倒数第二段第一句话可知,选A。
由文章倒数第二段中“If a trip is successful, the birds can travel on their own in the fu- ture.Then, when these birds become parents, they will teach their young to migrate.”可知,如果这 一实验成功,高鸣鹤以后就能自己往南迁徙。然后,当这些高鸣鹤做父母后就可以教它们的后 代迁徙了。故选B。
转载请注明原文地址:https://ti.zuoweng.com/ti/hEpQKKKQ
相关试题推荐
共用题干 李风先生是一位35岁的国企中层领导,家庭年总收入在25万元以上,他一直比较重视投资理财的重要性,经过一段时间的投资摸索,目前的金融投资资产中共...
共用题干 李风先生是一位35岁的国企中层领导,家庭年总收入在25万元以上,他一直比较重视投资理财的重要性,经过一段时间的投资摸索,目前的金融投资资产中共...
共用题干 李风先生是一位35岁的国企中层领导,家庭年总收入在25万元以上,他一直比较重视投资理财的重要性,经过一段时间的投资摸索,目前的金融投资资产中共...
共用题干 李风先生是一位35岁的国企中层领导,家庭年总收入在25万元以上,他一直比较重视投资理财的重要性,经过一段时间的投资摸索,目前的金融投资资产中共...
共用题干 李风先生是一位35岁的国企中层领导,家庭年总收入在25万元以上,他一直比较重视投资理财的重要性,经过一段时间的投资摸索,目前的金融投资资产中共...
共用题干 2008年,借着中国举办奥运会的契机,很多对情侣选择在这一年走进婚姻的殿堂,孙先生和赵女士就是其中的一对。新婚不久,孙先生在朋友的建议下,决定...
共用题干 2008年,借着中国举办奥运会的契机,很多对情侣选择在这一年走进婚姻的殿堂,孙先生和赵女士就是其中的一对。新婚不久,孙先生在朋友的建议下,决定...
共用题干 2008年,借着中国举办奥运会的契机,很多对情侣选择在这一年走进婚姻的殿堂,孙先生和赵女士就是其中的一对。新婚不久,孙先生在朋友的建议下,决定...
共用题干 马先生2008年1月采用组合贷款法购买了住房一套,购买当月开始还款。其中40万元的公积金贷款采用等额本金贷款方式,贷款利率为5.22%,其余3...
共用题干 马先生2008年1月采用组合贷款法购买了住房一套,购买当月开始还款。其中40万元的公积金贷款采用等额本金贷款方式,贷款利率为5.22%,其余3...
随机试题
根据《企业国有资产评估管理暂行办法》的有关规定,需要进行资产评估的经济行为应当以
对咖啡因的叙述不正确的是 A.小剂量作用部位在大脑皮质 B.较大剂量可直接兴
(2018年)某建设项目投资估算中,建设管理费2000万元,可行性研究费100
关于建筑工程的发包、承包方式,以下说法错误的是() A.建筑工程的发包方式
2014年6月某日,出租车司机万某将自己的出租车停靠在公交车站招揽生意。期间,有多辆公交车经停该车站,万某均不让道。公交车只好靠前或靠后停车,让在车站等候...
如右图所示,A、B、C、D、E、F将圆六等分。圆内接一个正三角形。已知阴影部分的面积是100平方米,则圆面积为()。A.180平方米B.200平方米C
女,39岁,既往有风湿性心脏病病史10余年。突起口角歪斜,口齿不清,左上肢无力2天。最可能的诊断A脑出血B脑血栓形成C蛛网膜下腔出血D脑栓塞E
下列有关建筑节能评价指标中,可节省的单位面积消耗量及相关指标的表述正确的是( )。A.能源种类的数量×折算系数/占地面积=单位面积消耗量B.建筑节能施工前与建
★甲乙两国是邻国。乙国近年来不断生产和进口进攻性武器,以增强其武装力量。甲国认为乙国行为对其构成威胁,于是同另一邻国丙国协商,通过其领土向乙国境内发射导...
下列属于基本分析方法特点的是()。 A以内在价值决定价格为基本理念 B分析价格变动中的短期趋势 C以供求决定价格为基本理念 D所提供的图表是...