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美国自然科学一和科二

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美国自然科学一和科二

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正序 | 倒序

1

1-1 How Many Teeth
1495
2020-10
2

1-2 I'm growing
939
2020-10
3

1-3 My Feet
804
2020-10
4

1-4 My five sences
650
2020-10
5

1-5 My Hands
531
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6

1-6 Sleep is for everyone
589
2020-10
7

1-7 Animals in Winter
456
2020-10
8

1-8 baby whales drink milk
503
2020-10
9

1-9 big tracks little tracks
381
2020-10
10

1-10 bugs are insects
393
2020-10
11

1-11 dinosaurs big and small
353
2020-10
12

1-12 ducks dont get wet
315
2020-10
13

1-13 Fireflies in the Night
304
2020-10
14

1-14 From caterpillar to butterfly
448
2020-10
15

1-15 From Seed to Pumpkin
338
2020-10
16

1-16 From Tadpole to Frog
315
2020-10
17

1-17 How Animal Babies Stay Safe
270
2020-10
18

1-18 How a seed grows
211
2020-10
19

1-19 A nest full of eggs
180
2020-10
20

1-20 Starfish
219
2020-10
21

1-21 A Tree Is a Plant
153
2020-10
22

1-22 What Lives in a Shell
220
2020-10
23

1-23 What's alive
173
2020-10
24

1-24 What's it like to be a fish
207
2020-10
25

1-25 Where Are the Night Animals
222
2020-10
26

1-26 Where Do Chicks Come From
287
2020-10
27

1-27 Air is all around you
149
2020-10
28

1-28 The big dipper
133
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29

1-29 Clouds
161
2020-10
30

1-30 Is there a life in outer space
145
2020-10