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雅思听力原文_maple syrup雅思听力原文

2024-03-26 14:41:33  人气:92

31. Its colour comes from an uncommon ______

gene

原文:One in ten black bears is actually born with a white coat, which is the result of a special gene that surfaces in afew

32. Local people believe that it has unusual _______

power

原文:And according to the legends of these communities, its snowy fur brings with it a special power

33. They protect the bear from ______

strangers

原文:It is their way of protecting it when strangers visit the area

34. Tree roots stop _______ along salmon streams

erosion

原文: the old-growth trees have extremely long roots that help prevent erosion of the soil along the banks of the many fish streams

35. It is currently found on a small number of ______

islands

原文:Today, the spirit bear lives off the coast of the province of British Columbia on a few islands

36. _______ by logging companies

roads

原文:they have built roads which have fractured the area where the bear usually feeds, and many hibernation sites have also been lost

37. Unrestricted ________ is affecting the salmon supply

fishing

原文:the number of salmon in those streams is declining because there is no legal limit on fishing at the moment

38. The bears' existence is also threatened by their low rate of ________

reproduction

原文:which is made all the more fragile by the fact that reproduction among these bears has always been disappointingly low

39. logging companies must improve their _______ of logging

method

原文:The government is now requiring logging companies to adopt a better logging method

40. Maintenance and _____ of the spirit bears' territory is needed

expansion

原文:there also needs to be more emphasis on its expansion

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