Light and Sound-这本书不错哟,强烈推荐!


Light and Sound

作者 (Author) Spilsbury, Louise
等级 (MML) MM LEVEL: 6.3
年级 (IL) Medium Grades (MG 4-8)
字数 (Words) 6218
类型 (Fiction) Non-Fiction
书号 (ISBN) 9781432981464
系列 (Series) Heinemann InfoSearch; Essential Physical Science;
This book explains basic concepts of light and sound, such as how sound travels, what sonar is, and why cats see well in low light. The coauthor is Richard Spilsbury.

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