As someone who has travelled through Asia on business and holiday, I would like to give my opinion about the environment impact on tourism. Having visited Indonesia, Thailand and Malaysia, I understand that     1    大量的游客给这些发展中国家带来了可观的经济效益.     2    然而，当地政府在发展旅游业时并不关注对环境的保护。This can cause many problems.

In view of the fact, tourists can influence these countries in a more positive way if we are thoughtful.     3    首先，我们可以选择步行或乘坐公共交通出行。     4    第二，我们应该拒绝购买和野生动植物相关的产品。Most importantly, we should check that any tours or excursions we take have little effect on nature.

    5    如果我们能遵循这些简单的步骤，it is certain that our seeking of pleasure is not causing any harm to people or places that we visit.

Yours sincerely

John Smith