首页
登录
职称英语
[originaltext] Birds are famous for carrying things around. Some, like homin
[originaltext] Birds are famous for carrying things around. Some, like homin
游客
2024-04-10
28
管理
问题
Birds are famous for carrying things around. Some, like homing pigeons, can be trained to deliver messages and packages. Other birds unknowingly carry seeds that cling to them for the ride.(9)Canadian scientists have found a worrisome, new example of the power that birds have to spread stuff around. Way up north in the Canadian Arctic, seabirds are picking up dangerous chemicals in the ocean and delivering them to ponds near where the birds live.
Some 10,000 pairs of the birds, called fulmars, a kind of Arctic seabird, make their nests on Devon Island, north of the Arctic Circle.(10)The fulmars travel some 400 kilometers over the sea to find food. When they return home, their droppings end up all around their nesting sites, including in nearby ponds.
(11)Previously, scientists noticed pollutants arriving in the Arctic with the wind. Salmon also carry dangerous chemicals as the fish migrate between rivers and the sea. The bodies of fish and other meat-eaters can build up high levels of the chemicals.
To test the polluting power of fulmars, researchers collected samples of deposit from 11 ponds on Devon Island. In ponds closest to the colony, the results showed there were far more pollutants than in ponds less affected by the birds. The pollutants in the ponds appear to come from fish that fulmars eat when they’re out on the ocean.(12)People who live, hunt, or fish near bird colonies need to be careful, the researchers say. The birds don’t mean to cause harm, but the chemicals they carry can cause major problems.
Questions 9 to 12 are based on the passage you have just heard.
9. What have Canadian scientists found about some seabirds?
10. What does the speaker say about the seabirds called fulmars?
11. What did scientists previously notice about pollutants in the Arctic?
12. What does the speaker warn about at the end of the talk?
选项
A、They migrate to the Arctic Circle during the summer.
B、They originate from Devon Island in the Arctic area.
C、They travel as far as 400 kilometers in search of food.
D、They have the ability to survive in extreme weathers.
答案
C
解析
短文中提到,管鼻藿(fulmar)这种海鸟在海上飞行大约400公里去觅食,故答案为C)。
转载请注明原文地址:http://tihaiku.com/zcyy/3548912.html
相关试题推荐
[originaltext]SeoulMetropolitanCityplanstosetupmorebicycle-onlyroa
[originaltext]SeoulMetropolitanCityplanstosetupmorebicycle-onlyroa
[originaltext]SeoulMetropolitanCityplanstosetupmorebicycle-onlyroa
[originaltext]Jeansarepants,ortrousers,madefromdenim.Mainlydesigne
[originaltext]Jeansarepants,ortrousers,madefromdenim.Mainlydesigne
[originaltext]Onlyafewyearsago,a"weblog"wasalittle-knownwayofk
[originaltext]Thedangerfromearthquakesisveryreal—theyareprobablyth
[originaltext]Weknowthatwehavetopayforwhatweget.Ifwebuyfood,
[originaltext]Weknowthatwehavetopayforwhatweget.Ifwebuyfood,
[originaltext]M:Howareyournewneighbors?W:Theyseemniceenough,butthey
随机试题
Asamodestlady,she__________________________(从未认为自己很了不起).hasneverthought
Tobeagoodteacher,youneedsomeofthe【B1】______ofagoodactor.Youmus
资料(一) 凯德证券股份有限公司(以下简称凯德证券)成立于上世纪90年代
戒烟的主要措施是指下列哪项A.行为干预 B.健康教育 C.药物干预 D.药
多发性抽动症阴虚风动证治疗应的首选方剂是()A.当归龙荟丸 B.青蒿
下列说法正确的是()。 ①政府债券的发行主体是政府,发行的目的是弥补国家财政
学生李某比较调皮,经常惹是生非。对他的教育,家长也不大配合。作为班主任,你准备怎
A.临床症状在系统治疗数周后即消失 B.痰结核菌持续3个月转阴 C.肺部啰音
企业破产清算时涉及的下列税费款项中,税务机关在人民法院公告的债权申报期限内,应向
根据《水利水电工程施工通用安全技术规程》(SL398-2007),人力搬运爆破器
最新回复
(
0
)