童话书：70本、科技书：35本、作文书是童话书的3倍。问：童话书和科技书一共多少本？70×3－35

童话书：70本、科技书：35本、作文书是童话书的3倍。
即作文书=70×3=210本。

1、童话书和科技书一共多少本？
70+35=105本

2、科技书是童话书的几分之几？
35/70=1/2

3、作文书比科技书多多少本？
210-35=175本

I still remember the time when I receive the beautifully packaged gift from my father. There was a nice dark blue pen inside the black little box with shining packing paper. My father gave it to me because I got my first '100' mark in the test since I was in primary school. He firstly said that he was proud of me and he always believe me to be the best. Then he told me to keep studying hard and he will invariably support me. It was at that time when I made my mind to work hard and give my parents a better life in the future.

字数稍多了,可能得删改一些.
个人觉得中学老师大概会比较喜欢这种立意的小作文吧~