1 Learning to Understand Nature
2 Substances on the Earth
3 Plants on the Earth
4 Animals on the Earth
5 Human Organs
6 Our Kindergarten
7 Hospitals
8 Stores
9 Money
10 Lets Learn to Count
11 Lets Learn to Do Sums
12 Lets Learn to Read the Clock
13 Lets Learn to Recognize Directions
14 Means of Transportation in a City
15 A Busy Street
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还没人写过短评呢
还没人写过短评呢