In first year Chinese I learned that 比较 is pronounced bi3jiao4, but I hear my Chinese friends all saying bi2jiao3. I won't correct them, so should I just join them and forget about the dictionary? Same with 针灸： the dictionary says it should be zhen1jiu3, but they all say zhen1jiu1。 到底应该怎么说呢？我以为声调那么重要，看来我都学坏啦！