Ⅱ.阅读理解

　　A

　　体裁：说明文　话题：全球变暖　词数：350　时间：6′

　　The UN Environment Programme says that rising temperatures could mean the end for some migrating animals.

　　Migrating or mobile animals move through several environments as they travel away from the cold of winter to warmer areas.Birds may fly from one part of the world to another, perhaps stopping at feeding grounds on the way.Whales and turtles (海龟) cover vast areas of ocean.The report says that changes in any one of the places which these animals use can cause serious harm.“Obviously these animals have developed their travelling patterns over thousands of years.But climate change is almost certain to be extreme over the next 25 to 50 years and it is extremely unlikely that these animals can change their habits fast enough，” said the report author Dr Robert Hepworth.Hardest hit by rising temperatures are turtles.Scientists have found that at higher temperatures, turtles produce far more female eggs than male ones.In parts of Malaysia, turtle birthing sites are producing only females, the report says.It also provides evidence that some turtles are more likely to develop cancer as the waters get warmer.

　　With birds, the main problem is climate－related damage to important areas at either end of the travels or at resting places along the way.About one－fifth of migrating birds are now in danger because of climate－related changes including rising sea levels, land loss and more violent storms, the report concludes.

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