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 ．

1 ． 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

2 ． 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

3 ． 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 ．

4 ． 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

5 ． 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

1 ． A 2 ． C 3 ． D 4 ． B 5 ． B