答案：A

There is no point in doing sth是常用的表达形式="There" is no need to do sth：没有必要做某事。要区别另一句型：It作形式主语，表语是(of)no use, not any use, not the slightest use, no good, not much good, fun等时，常用动名词做主语并后置，用it做形式主语。例如：It's no use crying over spilt milk.