The USA, New York—Whales and dolphins are facing increasing threats from climate change, according to a new report published by WWF and the Whale and Dolphin Conservation Society （WDCS）． The report 'Whales in hot water?' draws attention to the growing impacts of climate change on whales．They range from changes in sea temperature and the freshening of the seawater because of the melting of ice and increased rainfalls, to a sea level rise, loss of icy polar habitats and the decline of krill populations in key areas．Krill, a tiny shrimp that is dependent on sea ice, is the main source of food for many of the great whales． The speeding up of climate change adds greatly to trouble from other human activities, such as chemical and noise pollution, which kills some 1000 whales every day． 'Whales and dolphins have an ability to adapt to their changing environment,' said Mark Simmonds, International Director of Science at WDCS．'But the climate is now changing at such a fast pace that it is unclear to what extent whales and dolphins will be able to adjust．' Climate change impacts are currently greatest in the Arctic and the Antarctic．According to the report, cetaceans that rely on polar, icy waters for their home and food resources are likely to be greatly affected by the reduction of sea ice cover． WDCS and WWF are urging governments to cut global production of C02 by at least 50 percent by the middle of this century．The latest report of the Intergovernmental Panel on Climate Change showed it was possible to stop global warming if the world's emissions start to decline before 2015． 小题1:Which of the following is the most important for whales and dolphins? A．Rainfall B．Krill C．Sea ice cover D．High sea level 小题2:From the passage, we can learn that whales mainly feed on _____． A．dolphins B．krill C．sea horses D．sharks 小题3:The underlined word 'decline' in Paragraph 2 means _____． A．increase B．control C．protection D．fall 小题4:In what place is climate change greatest? A．The Pacific Ocean B．Asia． C．Two polar areas． D．Equator． 小题5:Which of the following is not right according to the passage? A．Climate change will lead to the changes in sea temperature． B．Climate change will result in the freshening of the sea water． C．Climate change will have a bad effect on human activities and whales． D．Human beings will forever have no ability to stop global warming．