今年七月接到了《河北自学考试》杂志编辑部转来的唐山考生许瑞勤的一封信。概括起来，信中主要谈了两个问题：一是认为自己所学“教材”与试题内容不太一致；一是认为“修辞是一门比较模糊的学科，很多方面都没有定论”。这封信所反映的问题有一定代表性，现根据笔者的理解答? In July this year, he received a letter from Xu Shanqin, a Tangshan candidate who was transcribed from the editorial department of Hebei Self-study Examination magazine. To sum up, the letter mainly talks about two issues: First, that what they have learned is not consistent with the content of the test questions; first, they think that “rhetoric is a rather vague subject and there are many conclusions that are not finalized.” This letter reflects some of the problems that are reflected in the author’s answer?