Passage 4

　　The weather prediction for Asia in 2050 read like a script from a doomsday movie.

　　Except many climatologists and green groups fear they will come 1 unless there is a concerted global effort to rein in greenhouse gas 2 .

　　In the decades to come, Asia--home to more than half the world s 6.3 billion people--will lurch 3 one climate extreme to another, with impoverished farmers battling droughts, floods, 4 , food shortages and rising sea levels.

　　It s not a pretty picture, said Steve Sawyer, climate policy adviser with Greenpeace in Amsterdam. Global warming and changes to weather 5 are already occurring and there is enough excess carbon dioxide and other greenhouse gases in the atmosphere to drive climate change for decades to 6 .

　　Already, changes are being felt in Asia but worse is likely to come, Sawyer and top climate bodies say, and could lead to mass migration and widespread humanitarian 7 .

　　According to predictions, glaciers will 8 faster, some Pacific and Indian Ocean islands will have to evacuate or build sea defenses, storms will become more intense and insect and water-borne diseases will move into new areas as the world 9 .

　　Experts say environmental 10 such as deforestation and pollution will likely magnify the impacts of climate change.

　　Passage 4

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