关于positive和negative development的问题

老师们好，最近在学写作技能1，发现一些positive和negative的题目是两者都存在的，既有positive的方面，又有negative的方面，不知道应该如何下手。请指教，谢谢。

1.Some countries achieve international sporting success by building specialized facilities to train top athlete instead of providing sports facilities that everyone can use. Do you think it is a positive or negative development?

2.Space travel has been possible for some time. Some people think that space tourism will probably be developed. What are the positives and negatives about it?

3.Organized tour to a remote community and other countries is becoming more and more popular. Is it a positive or a negative development for the local people and environment?

4.Across the world today, the use of many languages has been declining. Only a few languages have been increasingly used. Is this a positive or negative development?

5.Modern people like to design homes and buildings in many different styles, while there has been little control of what people can build. Is this a positive or negative development?