Hear Your Heart-这本书不错哟,强烈推荐!


Hear Your Heart

作者 (Author) Showers, Paul
等级 (MML) MM LEVEL: 3.4
年级 (IL) Lower Grades (LG K-3)
字数 (Words) 926
类型 (Fiction) Non-Fiction
书号 (ISBN) 9780060254117
系列 (Series) Let's-Read-and-Find-Out Science: Stage 2;
This is a simple explanation of the structure of the heart and how it works.

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