第6部分:完形填空(第51-65题,每题l分,共15分) 下面的短文有15处空白,请根据短文内容为每处空白确定1个最佳选项。
51、根据材料,完成{TSE}题。
Why India Needs Its Dying Vultures
The vultures (秃鹰) in question may look ugly and threatening, but the sudden sharp decline in three species of Indias vultures is producing alarm rather than celebration, and it presents the world With a new kind of environmental problem. The dramatic (51) in vulture numbers is causing widespread disruption to people living in the (52) areas as the birds. It is also causing serious public health problems (53) the Indian subcontinent.
While their reputation and appearance may be unpleasant to many Indians, vultures have (54) played a very important role in keeping towns and villages all over India (55). It is because they feed on dead cows. In India, cows are sacred animals and are (56) left in the open when they die in their thousands upon thousands every year.
The disappearance of the vultures has (57) an explosion in the numbers of wild dogs feeding on the remains of these (58) animals. There are fears that rabies (狂犬症) may increase as a result. And this terrifying disease may ultimately affect humans in the region, (59) wild dogs are its main carriers. Rabies could also spread to other animal species, (60) an even greater problem in the future.
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