M: Hi, Helen, what do you think of our class in Children’s Literature
W: It looks pretty good. Are you also majoring in Elementary Fducation
M: Yes. I can use this to fulfill the requirement for my course.
W: Have you finished the first assignment yet
M: Not yet. I just bought the books today. How about you
W: I started this afternoon. It’s great fun reading those wonderful children stories by Doctor Seuss.
M: Doctor Seuss I don’t remember seeing his name on the reading list.
W: His full name’s Theodore Seuss Geisel. You can find this name on the reading list. Doctor Seuss is his pen name.
M: I love reading those stories as a child. It’ll be interesting to read them now from a different point of view. I guess they’ll give me a good idea of how children think.
W: Those stories are also great for classroom use.
M: How’s that
W: Well, take a typical Doctor Seuss’s book like The Cat in the Hat. It has a controlled vocabulary of only two hundred words.
M: So that means the children get lots of practices using a small number of words over and over again.
W: Exactly. In fact The Cat in the Hat was written mainly to show how a controlled-vocabulary book could also be interesting and fun.
M: Well, it sounds as though this course is also going to be interesting and fun. I think I’ll get started on those readings tonight.

What is true about The Cat in the Hat（）