A
Maybe you are confused by choosing books for children．Here are some good books for you：
Learning How to Learn ＄22
Children who read this book show great interest in study. Many pictures will help them understand it easily and quickly．
Basic Study Guidebook ＄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 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
Buy this book and help children with their education．
What's more, you'll just pay 60% for it before May 10,2016
21.“________” can tell you what to do if you are tired of a subject．
A．Study Skills for Life B．Basic Study Guidebook
C．Learning How to Learn D．How to Use a Dictionary Picture Book for Children
22.If you buy the three books on May 2nd,2016, you will just pay_______for them．
A.＄55.8 B.＄93 C.＄71 D.＄60
23.The aim of the three ads is to________．
A．help children learn English B．help children learn about nature
C．use a dictionary to pronounce correctly D．sell these books to the children
