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Climate change has brought about such problems as bleaching-induced【S1】______of corals. Bleaching occurs when corals axe stresse
Climate change has brought about such problems as bleaching-induced【S1】______of corals. Bleaching occurs when corals axe stresse
admin
2010-04-12
63
问题
Climate change has brought about such problems as bleaching-induced【S1】______of corals. Bleaching occurs when corals axe stressed by high temperature or other【S2】______changes, and lose their symbiotic algal cells. When they lose these cells, which provide the corals with essential【S3】______and give them their color, they can die. Reefs are important for livelihoods, and fisheries and tourism, and are the main【S4】______along the eastern African coast as well as【S5】______many of the islands of the Western Indian Ocean.
In college during the ’70s, I joined an expedition to the Malindi Marine Park-one of the first MPAs (marine protected areas) to be established in Africa-where we【S6】______in a well-protected reef. But over the years, that reef has been completely devastated by the bleaching. It was truly【S7】______to see such a vibrant and healthy reef reduced almost to the status of an unprotected one.
Recently, coral reefs have received a great deal of attention, especially following the 1997/ 1998 bleaching event that【S8】______70 percent of the reefs of the region. Through a regional task force, a coral reef strategy with an emphasis on MPAs is【S9】______under development. Countries in the region are also involved in a【S10】______reef research project to better understand the impacts of coral bleaching.
A) depressed B) nutrients C) devastated D) morality
E) environmental F) globally-targeted G) desperately H) ecosystem
I) dove J) depressing K) mortality L) available
M) currently N) gloomily O) fringing
【S1】
选项
答案
K
解析
根据文章结构,此处应该填入一个名词。这句话是说,气候变化已经引起了一些问题,如漂白导致的珊瑚死亡。名词morality意思是“道德,品行”,不符合题意;而名词mortality意思是“致命性,死亡”,符合题意。故选K)。
转载请注明原文地址:https://kaotiyun.com/show/knj7777K
0
大学英语四级
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