V3:at least 10% of people have side effect, and 60% of people who have improvement have side effect. Are there more people who have side effect than people have improvement (1)90% people who have side effect also have improvement. 考过的童鞋 条件(2)是啥咪呢???? 求助 明天有考试的童鞋麻烦帮我留意一下 谢谢了~~!!