Can you tell me which soft drinks is better for human being thirst?

Soft drinks DO NOT hydrate you - they do quite the opposite, actually. While water may be the base liquid, there are also other compounds in there (e.g., potassium), which works to dehydrate you. If you want something to quench your thirst and rehydrate yourself, you drink water. If you want something for flavor, and aren't concerned with hydration, then you'd drink a soft drink. But softdrinks is good to, it energizes your body and it improves your body. The best example of good softdrinks is Mountain Dew.