The good news is that corals can recover if given the chance.But this is slow.And the future of the ocean’s coral is largely in human hands.

　　“We can’t stop the storms...[But] we can achieve better water quality;we can tackle the challenge of crown-of-thorns,” says John Gunn,CEO of AIMS.“However,its future also lies with the global response to reducing carbon dioxide emissions (排放).”

　　29.What can we learn about the Great Barrier Reef from the article?

　　A.With the world’s second-largest coral reef,the Great Barrier Reef was listed as a UNESCO world heritage site.

　　B.The Great Barrier Reef has lost more than half of its coral cover since 1985.

　　C.At the present rate of loss,the coral cover will reduce by another 30 percent within a decade.

　　D.Coral reefs are an important part of the ocean’s ecosystem and can prevent ocean acidification.

　　解析:细节理解题。由第一段可知A项不对;由第二段“Coral cover in the Great Barrier Reef has dropped by more than half over the last 27 years...”可知B项正确;由第二段“If the trend continues,coral cover could halve again by 2022”可知C项不对;由第六段可知海水吸收大气中过量的二氧化碳会导致海洋酸化,海洋酸化导致的珊瑚白化可能会引起珊瑚死亡,所以D项的can prevent ocean acidification不对。

　　答案:B

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