試題詳解

26. What is the main idea of this article?
(A) Ecotourism helps boost the local economy and benefits the local industry.
(B) Ecotourism is a double-edged sword whose impact is hard to determine.
(C) The presence of tourism departments in rare natural habitats can cause some problems.
(D) Tourists will damage the fragile environment, so they should be regulated properly.