Should the Whole World Speak the Same Language?如果要说一种语言不好，有什么论据？最好是英文的。

No.I don't think it's a good idea that the whole world should speak the same language. As language stands for a kind of culture,a kind of civilization. Furthermore,each country has different customs and folks. The world has variaty cultures and people always persue personalities. So the whole world shouldn't speak the same language.

more people speaking the same language means more cultures and civilisations are endangered and even wiped out。

一种语言代表一种文化，人类需要多种文化才能更好的发展和解决各种各样的问题。只有一种文化的世界就好比只有一种树的森林，一旦爆发病虫害整个森林的抵抗力是脆弱不堪的，生态系统同样如此。