Passage Three

　　The huge growth of global "ecotourism" industry is becoming an increasing concern for conservationists with mounting evidence that many wild species do not respond well to contact with human beings. overexposure to tourists has been linked to stress, abnormal behavior and adverse health effects in species such as polar bears, dolphins and gorillas（大猩猩）, says a report in New Scientist.

　　While regulated ecotourism can help conservation efforts by encouraging people to manage endangered species and their habitats, many projects are poorly designed and unregulated, its says. “Many ecotourist projects are unaudited, unauthorized and merely hint they are based on environmentally friendly policies and operations”

　　While regulated ecotourism can help conservation efforts by encouraging people to manage endangered species and their habitats, “many projects are poorly designed and hint they are based on environmentally friendly policies and operations.”

　　Ecotourism is growing by 10 to 30 percent a year and an estimated 20 percent of tourists are thought to visit a conservation-based project. Philip Seddon, of the University of Otago in New Zealand, said that although most tourist projects conformed to basic guidelines on land use and not scaring wildlife, their full impact was rarely considered.

　　……

　　In Africa, gorillas have picked up parasites introduced to their habitat by tourists and mongooses（蠓）have caught lung diseases from human beings. Experts said that the answer to the problems was better

　　regulation and supervision of ecotourism. The Galapagos Islands, where visitor numbers are strictly controlled, is a good model.

　　41. Ecotourism is meant to ______.

　　A. have tourists help in the conservation of wildlife

　　B. have wild species respond well to contact with humans

　　C. make wild species reduce stress and abnormal behavior

　　D. make conservationists more concerned with wildlife

　　42. According to New Scientist, many ecotourist Projects ______.

　　A. really encourage people to protect wi1dlife and its habit

　　B. strictly follow environmentally friendly polices

　　C. actually lack proper examination and official approval

　　D. seriously damage the habitats of endangered species

　　43. What will happen to wildlife ultimately if the present "ecotourism" practice goes on?

　　A. It will disturb their life.

　　B. It will affect their health.

　　C. It will increase their stress.

　　D. It will threaten their survival.

　　44. According to the passage, the growth in the global “ecotourism” industry ______.

　　A. reflects a growing concern for conservation

　　B. arouses a growing concern for conservation

　　C. coincides with a mounting concern for conservation

　　D. originates from a grater concern for conservation

　　45. According to the passage, a solution to the "ecotourism" problem is to ______.

　　A. encourage people to manage endangered species

　　B. reduce the exposure of wildlife to human beings

　　C. help wild animals increase their fitness

　　D. prevent wildlife from catching human disease