题目内容：
根据以下材料，回答题The mysterious tiger has been a symbol of power and strength for centuries.Its power is a 56__________to hunters,57__________have tried to kill it to prove their own skill and58__________.In India59__________the nineteenth and early twentieth centuries, large parties of60__________from around the world61__________ go out on huge tiger hunts.Hundreds of tigers could be killed in a few weeks.As a62__________of this over-hunting,63__________ with loss of habitat(栖息地), the population of tigers in India dropped from about 40,00064__________the turn of the twentieth century to about 2,000 by 1972.
With the help of India and other concerned countries, the World Wildlife Fund65__________ Operation Tiger in 1972 to save the tiger66__________dying out.Since then, seventeen tiger preserves(保护)have been67__________, and the tiger population in India has risen to68__________4,000 and 5,000.
But when people live on the69__________of the tiger preserves, tigers sometimes kill their farm animals and attack people --about 600 people in India have been killed by tigers in the last dozen years.70__________tigers do not eat humans.But "old, wounded and homeless" tigers can become habitual(习惯的）man-eaters.In one area in India, villagers have 71__________ a clever solution.They wire lifelike human dummies(假人) to electricity72__________ the tigers get a(n) 73__________ shock when they attack.It is hoped that in this way tigers will learn to74__________people.But the conflict between human and tiger 75__________Only if people have enough food, shelter and fuel will the tiger survive in the long run.And only if the tiger and its forest survive will people have a natural world they can return to.
第56题答案是_________ A．succession
B．challenge
C．guarantee
D．intelligence
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