首页
登录
职称英语
[originaltext] Scientists say a huge percentage of bird species are in dang
[originaltext] Scientists say a huge percentage of bird species are in dang
游客
2023-08-05
58
管理
问题
Scientists say a huge percentage of bird species are in danger because their habitats, or homelands, are disappearing. Traditional migration paths take birds through countries that are not protecting locations to stop, rest and feed. The scientists studied the migration, or flight paths, of almost 1,500 species. They decided that 91 percent of them passed through dangerous areas. [19] The major danger for migratory birds is development. Building and paving has covered over nature where birds stop and feed as they move from one part of the world to another. For example, a bird migrates from its breeding grounds in the Arctic. It flies all the way to the southern hemisphere in Australia and New Zealand. Along the way, the small birds stop at Yellow Sea coast in China, North Korea and South Korea. [20] One of the scientists who worked on the study says "many of these critical sites have been lost owing to urban, industrial and agricultural expansion."
The problem, according to investigators, is that many of these small birds die along their migration because they don’t have a safe place to eat and rest. There is no place to restore their energy for the next leg of their journey. "They simply perish along the way," says one of the scientists. Countries in
North Africa, Central Asia and those along the coasts of East Asia are having the most difficult time conserving land. The scientists say these countries do not have enough areas that are safe for birds. In addition, many of the reserves do not overlap enough with the paths of migrating birds. One species that is now extinct is the Eskimo bird. "Our world gets poorer every time we lose a species," one of the scientists says. [21] The researchers say countries need to work together and come up with safe stopover areas for birds that pass through their boundaries. For example, one country might have preserved safe zones for migrating birds. But a neighbor country might not A bird might perish. One scientist who is not involved in the report tells the Los Angeles Times that while some habitats are changing, more work can be done to make urban areas safe for birds. [22] He says small changes—like planting more native plants or keeping cats out of areas birds would be likely to use—could make a big difference.
19. What threatens migratory birds most?
20. What does the scientist say about the critical sites?
21. What do countries have to do to protect birds?
22. What can be done to make urban areas safe for birds?
选项
A、Mankind’s economic development.
B、Hunters and other animals.
C、Climate change and air pollution.
D、The length of migration path.
答案
A
解析
录音中明确指出,对候鸟的最主要威胁(major danger)是发展(development),下面具体提到“发展”是指高楼大厦和道路的建设,A项所说的“经济发展”符合录音所述。B项“猎人和其他动物”和C项“气候变化和空气污染”都未在录音中提及。D项“迁徙的距离”不是构成威胁的原因,只是因为鸟类在迁徙过程中找不到停留点才对它们造成威胁。
转载请注明原文地址:https://tihaiku.com/zcyy/2899482.html
相关试题推荐
[originaltext](23)WiththeInternetrevolutionusheringinnewmodesofco
[originaltext]Hereisaquestionforyou.Thecustomerisalwaysright.Rig
[originaltext]Moderator:Hello,ladiesandgentlemen.Itgivesmegreat
[originaltext]Moderator:Hello,ladiesandgentlemen.Itgivesmegreat
[originaltext]Moderator:Hello,ladiesandgentlemen.Itgivesmegreat
[originaltext]TheWorldHealthOrganizationsays57nationsinSouthernAfr
[originaltext]TheWorldHealthOrganizationsays57nationsinSouthernAfr
[originaltext]TheWorldHealthOrganizationsays57nationsinSouthernAfr
[originaltext]W:WhatdoyouthinkofTV?Ithinkitisafalsegod,adang
[originaltext]W:WhatdoyouthinkofTV?Ithinkitisafalsegod,adang
随机试题
MaryandIbought______someoranges.A、myselfB、herselfC、yourselvesC主语为“Maryan
FunctionoftheLungsBloodvesselsrunni
Inthe______majorityofcases,thisisaverysuccessfuloperation.A、tremendous
Wherecanpeoplefindthetallestredwoodtrees?[br][originaltext]M:Haveyou
A.叶酸缺乏 B.维生素A缺乏 C.维生素B缺乏 D.维生素K缺乏 E.
项目公司资本结构是否合理,一般是通过分析()的变化进行衡量。A:利率 B:风
对于根尖刮治术哪项是不正确的()A.作根尖切除也必须作根管治疗 B
从所给四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性: A.如上
下列关于絮凝度的表述中,正确的是A、絮凝度越小,絮凝效果越好 B、絮凝度不能用
患者,女,57岁。因不明原因腰背痛半年就诊,经骨密度测定等确诊为骨质疏松症,以下
最新回复
(
0
)