题目内容：

 

Mathematical Induction By Titu Andreescu & Vlad Crisan ISBN: 9780996874595 Price: US $ 84. 63 Buy now at a 20% discount!	`I serves as a very good resource and teaching material for anyone who wants to discover the beauty of induction(归纳法) and its applications. The authors explore 10 different areas of mathematics, including topics that are not usually discussed in an Olympiad-oriented book on the subject.
The Flight of a Buttrfly or the Path of a Bullet ? By Larry Cuban ISBN: 9781682531372 Price: US $ 32.00 Buy now at a 10% discount!	In this book, Larry Cuban looks at the uses and effects of digital technologies in K-12 classrooms, exploring if and how technology has transformed teaching and learning. In particular, he examines forty-one classrooms across six districts in Silicon Valley that have devoted much to including digital technologies into their education practices.
The Fight for America's Schools By Barbara Ferman ISBN: 9781 682530962 Price: US $ 60. 00 Buy now at a 15% discount!	This book examines how parents ,communities ,teachers, unions,and students are working together to oppose market-based reforms in education. Drawing on a series of rich case studies, the book explains how different groups work together toward common goals.
The White Chalk of Days By Mark Andryczyk ISBN: 9781618116611 Price: US $ 27.05 Buy now at a 10% discount!	It presents translations of literary works that imaginatively involve important problems in today's Ukraine and express its suffering and happiness. Featuring poetry，fiction, and essays by fifteen Ukrainian writers, the anthology (选集) offers English-language readers a wide collection of the most appealing literature written in Ukraine in the past fifty years.

 

 

1.How much is Mathematical Induction now?

A.About $ 16. 93. B.About $ 64. 63.

C.About $ 67. 70. D.About $ 84. 63.

2.What do we know about the book written by Larry Cuban?

A.It focuses on technological reform in education.

B.It aims to improve pre-school education.

C.It helps with students' mathematical ability.

D.It is based on various academic studies.

3.Which book is the most culture-specfic?

A.Mathematical Induction.

B.The Flight of a Butterfly or the Path of a Bullet? .

C.The Fight for America's Schools.

D.The White Chalk of Days.