2024-03-26 14:41:33|已浏览：76次
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
