Other animals picked out as particularly in danger include：the North Atlantic Right Whale, whose main food (tiny shrimp) is disturbed by the change in ocean flows and the White－Nose Dolphin, which is out－competed by other kinds of dolphins in warmer waters.The report is not all bad news.Even with major climatic changes, protecting the environment can still help mobile animals to recover.“We need governments to start taking action at the national and international level.The clock is running.”， said Dr Hepworth.And some animals are already adapting, with the report mentioning whales that are changing their feeding behaviour, finding new feeding grounds and new foods to eat.

　　【语篇解读】　本文主要讲述了全球变暖对迁徙动物的影响。

　　21．What is the main topic of the text?

　　A．The effect of climate change on migrating animals.

　　B.How animals are adapting to changes in temperature.

　　C．The actions required to save migrating animals.

　　D．The need for government policies to prevent global warming.

　　答案　A　[主旨大意题。根据文章大意，本文主要讲述了温度上升对迁徙动物的影响，故选A。]

　　22．By saying “the clock is running” in the last paragraph, Dr Hepworth means that “________”．

　　A．it may be too late to save some animals

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