下列说法正确的是（ ）

——《史记》

材料二：宗室非有军功论，不得为属籍。明尊卑爵秩等级，各以差次名田宅，臣妾衣服以家次。有功者显荣，无功者虽富无所芬华。

——《史记》

材料三：商君治秦，法令至行，公平无私，罚不讳强大，赏不私亲近，法及太子，黥劓其傅。期年之后，道不拾遗，民不妄取，兵革大强，诸侯畏惧。

——《战国策》

C

    My daughter Eyen is ten years old. She is in Grade Three in a primary school. She is a cute girl though(虽然) she has some strange ideas sometimes.

    One day she asks me, “Mum, what's your favourite subject?” I think for a while(一会儿) and answer，“It is difficult to tell. I love singing, so music is my favourite. And I am good at English. My history teacher also says I am excellent. Well, I can say I don't like science. But science is important for us, you know. So you must do well in it. What is your favourite subject, Eyen? Tell me something about your subject, dear.”

    “I like Chinese. It is easy. I like English because my English teacher likes me very much. I can't stand maths. It's serious and sad(悲哀的).”

    “Do you mean(意味)your maths teacher is serious and sad?”

    “No, it is maths, not the maths teacher.”

    “Why do you think so?”

    “Because maths has so many problems! Isn't it sad all day?”