首页
登录
职称英语
Spanning the ocean divide between the U.S. and Russia, it is one of the rich
Spanning the ocean divide between the U.S. and Russia, it is one of the rich
游客
2024-10-04
1
管理
问题
Spanning the ocean divide between the U.S. and Russia, it is one of the richest and most commercially productive marine environments on earth, teeming with pollack and halibut, fur seals and Steller’s sea lions, puffins and murres. The seals and seabirds depend on catching fish, and so do humans. More than 2,000 boats from the U.S., Russia, Japan, Norway, China, Poland and the Koreas haul in an annual catch worth roughly $1 billion. The portion taken off the shores of Alaska alone amounts to one-half the sea life caught by commercial fishing vessels in U.S. waters.
But will the bounty last? Since the majority of the world’s fisheries are in a state of collapse, as too many boats chase too few fish, conservationists fear the same fate for the Bering Sea, the last great refuge of marine abundance. Competition among countries for the rights to fish certain sectors of the sea is already fierce and could turn violent, as it has elsewhere in the world. The Russians have severely depleted fish stocks in their zone, and the international area open to all boats, called the Doughnut Hole, has been nearly stripped of commercial fish.
No species is more important to man and beast than pollack, the No. 1 ingredient of frozen fish sticks and the fish items served by chains like Burger King and Long John Silver. Each year the Bering Sea yields two billion kg of this bottom-dwelling creature, making me pollack business the biggest fish harvest in the world.
On the surface, that business is healmy: the pollack catch has stayed near record levels. But signs of overfishing and an ailing ecosystem can be seen higher up in the food chain. The fur-seal population has not increased despite a long-standing ban on commercial hunting. The number of Steller’s sea lions, which feed mostly on pollack, has plunged 80% in the past years, and seabirds such as the red-legged kittiwake are also in trouble.
Even if fishing is brought under control, the Bering Sea faces threats that originate thousands of miles away. Wind currents from industrial areas far to me south bring in pollutants like insecticides and heavy metals, which collect in me tissues of wild life and the local Inuit people. At the same time the region has been warming up, and part of me reason may be the buildup of greenhouse gases in the atmosphere. Whatever the cause, sea ice has been retreating farther to the north, making life harder for polar bears and other ice-dwelling animals. [br] By saying that pollack is "bottom-dwelling" creature, the author means that pollack
选项
A、lives deep down in the seabed.
B、is fundamental to good health.
C、is least influenced by humans.
D、is low down in the food chain.
答案
D
解析
根据题干中的pollack和“bottom-dwelling”定位到第3段。如果只看第3段和第4段第1句,很容易误选A,但只要看到第4段第2句中的higher up in the food chain,就可以推断pollack应该处在食物链的最底层,关于pollack处在食物链的位置,从第4段最后一句的内容也可得到证实,因此,D才是正确答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3785974.html
相关试题推荐
SpanningtheoceandividebetweentheU.S.andRussia,itisoneoftherich
SpanningtheoceandividebetweentheU.S.andRussia,itisoneoftherich
SpanningtheoceandividebetweentheU.S.andRussia,itisoneoftherich
SpanningtheoceandividebetweentheU.S.andRussia,itisoneoftherich
WhatcolorribbonsshouldRussiansweariftheysupporttheprotest?[br][orig
WhatcolorribbonsshouldRussiansweariftheysupporttheprotest?[originalte
Whatistherelationshipbetweenthetwospeakers?[br][originaltext]G:Excuse
UndertheagreementbetweenTurkeyandArmenia,[br][originaltext]Turkeya
Thesectarianclashesoccurredbetween______.[originaltext]MoreChristian
HowmuchhasChineseeconomyincreasedbetweenAprilandJune?[originaltext]
随机试题
Hisgreatest_______ishisutterlynaturalandprofoundlygoodmusicalinstinct
简答题:根据所给材料回答问题。 下面列出了某出版社的七项行为。请判断这些行为有
小肠上皮细胞顶端膜上可将寡肽转运入细胞的转运体是A.Na氨基酸同向转运体 B.
阴茎癌患者肿瘤边缘已接近阴茎基部,左侧腹股沟淋巴结活检有转移,应如何处理A.阴茎
药物寒热、温凉的依据是A.神农氏尝百草的体会 B.《素问》:"寒者热之,热者寒
【教学过程】 (一)情境导入 教师创设情境,用多媒体播放关于刘邦和项羽的图片;提问学生,通过图片能感受到什么?这两位人物有什么传奇故事? 学生自由发言。
有效成立的测绘合同在尚未履行完毕之前,双方当事人协商一致而使测绘合同发生改变,称
抑制细胞线粒体氧化磷酸化,而对虫卵无杀灭作用的驱绦虫药物是A.噻嘧啶B.哌嗪C.
吉尔福特的智力三维结构模型不包括( )A.操作 B.内容 C.产物 D.
下列不属于货币市场构成的是( )。A.短期政府债券市场 B.中长期债券市场
最新回复
(
0
)