首页
登录
职称英语
共用题干 第三篇Operation MigrationIf you look
共用题干 第三篇Operation MigrationIf you look
题库
2022-08-02
31
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.The distance covered by the young whooping cranes on their trip south is_____________.A:1,200 milesB:120 milesC:1,931 milesD:2,000 miles
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://tihaiku.com/zcyy/1504060.html
本试题收录于:
综合C题库综合类分类
综合C
综合类
相关试题推荐
共用题干 王某有一套三居室的住宅,委托该住宅附近的甲房地产经纪公司(以下简称甲
共用题干 王某有一套三居室的住宅,委托该住宅附近的甲房地产经纪公司(以下简称甲
共用题干 甲房地产开发公司(以下简称甲公司)委托乙房地产经纪公司(以下简称乙公
共用题干 甲房地产开发公司(以下简称甲公司)委托乙房地产经纪公司(以下简称乙公
共用题干 甲房地产开发公司(以下简称甲公司)委托乙房地产经纪公司(以下简称乙公
共用题干 甲房地产开发公司(以下简称甲公司)委托乙房地产经纪公司(以下简称乙公
共用题干 甲房地产开发公司(以下简称甲公司)经过市场调研发现,某经济技术开发区
共用题干 甲房地产开发公司(以下简称甲公司)经过市场调研发现,某经济技术开发区
共用题干 有一块处于城市繁华商业区的熟地,面积为5000m2,规划用途为商
共用题干 有一块处于城市繁华商业区的熟地,面积为5000m2,规划用途为商
随机试题
[originaltext]What’sthedatetoday?[/originaltext]A、TodayisNovember8.B、Tod
晚婚晚育latemarriageandlatechildbirth
RentalCarAgent:Hi.HowcanIhelpyou?Customer:Yeah.【D1】______Ag
WhydidPeterJuddjointhearmy?[br]Peterwashopelessbecause______.A、hedi
保险中的风险通常指的是()。A.盈利的不确定性 B.损失发生的不确定性
下列施工质量控制点的管理工作中,属于事前质量控制的有()。A:明确质量控制目标
患者,男性,72岁,诊为原发性支气管肺癌,症见咳嗽无痰,或痰少,痰中带血,甚或咯
甲、乙、丙设立一有限公司,制定了公司章程。下列哪些约定是合法的?(2013年)A
根据《中华人民共和国固体废物污染环境防治法》,关于固体废物忙存、处置、利用的含
下列工作内容中,属于合同实施偏差分析的有()。A.产生偏差的原因分析 B.
最新回复
(
0
)