Loud or Soft? High or Low?

Jennifer Boothroyd 著

出版社：Lerner Classroom

出版时间：2011-01

ISBN：9780761371076

词汇量：527

页数：32

类别：数理化，科普百科

虚构：非虚构

开本：

阅读年龄：阅读年龄 8-9岁 (22.9%), 4-5岁 (17.1%)

作者简介

内容简介

Fireworks crackle and boom in the sky. Your friend laughs at a joke. Sounds are all around you. But what exactly is sound? And how does sound reach your ears? Read this book to find out!

作者简介

内容简介

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