Unfortunately，while their effect may not be noticeable in the off－season national park in Costa Rica，wild monkeys now feed on garbage left by the tourists.Furthermore，ecotourists tend to seek out places with the rarest animals and plants，pressuring the most delicate living things.

　　Controlling random development isn't easy.Corruption can lead officials to stand ecological damage.For example，a large resort facility，normally not allowed near a reserve，may be allowed if the company pays enough money to certain people in the government.Limited resources are another issue.Areas of forests and beaches that would require an army to protect are often watched by several employees.

　　It is easy to be critical of the ecotourism industry but it is important to be positive as well.Ecotourism can never be損ure.擶e can't expect zero negative efferccts on the ecosystem.It is also unrealistic to think that humans won't go anywhere accessible to them.If protection efforts are maintained and strengthened，those remaining places of undisturbed nature may be stressed，but they won't be destroyed.

　　【语篇导读】　本文是一篇说明文。本文讲述了生态旅游的定义和好处以及它所带来的负面效应。

　　________．

　　－related jobs for people

　　C．argue against ecotourism as a damaging trend that must be stopped

　　D．stress that ecotourism benefits ecosystems on the whole despite its damage

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