隋、唐、宋三个王朝是我国古代经济发展的重要历史阶段。阅读下面材料，回答问题。

材料一：炀帝大业元年，发河南诸郡男女百余万开通济渠，自西苑引谷，洛水达于河，又引河通于淮海，自是天下利于转输。四年，又发河北放诸郡百余万众开永济渠，引沁水南这河，北通涿郡。——《通典》卷十《遭运》

材料二：隋炀帝特别喜欢外出巡游，从东都到江都的运河刚刚完工，隋炀帝就带着二十万人的庞大队伍到江都去巡游，为了满足船队大批人员的享受，隋炀帝命令两岸的百姓，给他们准备吃的喝的，叫做“献食”。

材料三：为君之道，必须先存百姓，若损百姓以奉其身，犹割股以啖腹，饱腹而身毙。……朕当去奢省费，轻徭薄赋，选用廉吏，使民衣食有余，则自不为盗，按用重法邪？ ——节选自《贞观政要》

原文大意是：作为一个君王，一定要使百姓能够生存。如果君王损害百姓的利益来达到享乐的目的，就好像是割自己身上的肉吃到肚子里，虽然肚子饱了，人却已经死亡。……我应当去掉奢侈，节省开支，减轻徭役，少收赋税，选拔和任用廉洁的官吏，使老百姓吃穿都有富余，那么他们自然就不会去做盗贼了，怎么能用严厉的刑法呢？

材料四：

——摘自杨远《西汉至北宋中国经济文化向南发展》

材料五：宋代手工业取得了巨大的进步，商业繁荣，出现了很多商业大都市。

请回答：

    Reading books is a good hobby for all kinds of reasons.

    First, reading books is f____ You can always keep yourself interested and help you to have an enjoyable time if you like reading.It is a relaxing hobby too.You can really become lost in a book.

    Next, you can read a book a____ : in a car, in a waiting-room, on a plane, in bed — even in the bath.All you n____ is a book! Reading is a convenient hobby as it is easy to stop and then s____ again.

    A____ good reason for reading books is that it is useful.If you read as a hobby you will get better and better at it.This m____ that you will read faster and will become better at understanding what you read.As your reading improves, you will probably find your schoolwork becomes much e____ .Many school subjects depend on(依靠) good reading and, as you read, you l____more and more.

    Good readers are most likely to be good w____, too.They are usually good at spelling as well, and have more things to write about.Reading books is a wonderful hobby, one of the best.

    W____ other hobby could be, more useful, or more enjoyable?