问题补充：
Learning How to learn ＄22
Children who read this book show great interest in study. May pictures will help them understand it easily and quickly.
Basic Study Guide book ＄36
Read this book and learn:
What the three barriers（障碍）to study are and what to do about them.
What to do if you are tired of a subject.
Children read it to improve the ability（能力）to study.
How to use a Dictionary Picture Book for Children ＄35
Read this book and learn:
How to look up words in a dictionary.
What the different marks in a dictionary mean.
How to use a dictionary to pronounce words correctly.
But this book and help children unlock their education.
What’s more you will just pay 60% for it before December 20
【小题1】“.” can tell you what to do if(如果)you are tired of a subject（课程）.A．Study skills for lifeB．Learning How to LearnC．Basic Study GuidebookD．How to Use a Dictionary Picture Book for Children【小题2】According to the ads（根据广告）the three books are for.A．the oldB．parentsC．childrenD．men【小题3】If(如果)you buy the three books on December 2, you will just pay for them.A．$93B．$71C．$80D．$79C
答案：
(答案→)C
解析：本文叙述了三则广告主要是介绍了三个与孩子学习有关的书籍。
【小题1】细节理解题.根据第二则广告Basic Study Guide book ＄36……What to do if you are tired of a subject.描述,可知基础学习指南这本书会告诉你当你对一个科目厌烦时,应该怎么做.故选C。
【小题2】主旨大意题。阅读这三则广告可知，这三则广告主要是介绍了三个与孩子学习有关的书籍。故选C。
【小题3】推理判断题。阅读三则广告可知前两本书的总价是22+36=58元。如果你在12月20号之前买第三本书，只要付百分之六十的款就可以，故35×60%=21元。58+21=79元，故选D
