周围的世界PDF电子书下载

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THE DAY 5

ALL AROUND YOU 5

THE SUN 6

THE NIGHT AND THE STARS 7

THE MOON 8

SHADOWS 8

CLOUDS AND THE BLUE SKY AND RAINBOWS 9

AIR,WIND,THUNDER,AND LIGHTNING 10

FOG AND RAIN 12

THE YEAR 12

SNOW 14

SLEET,HAIL,AND ICE 15

WATER 16

WHAT SOIL IS 17

WATER EVERYWHERE 17

UNDER THE GROUND 19

ABOUT SEEDS 21

PLANT FACTORIES 22

WHERE PLANTS GROW 23

HOW PLANTS TAKE CARE OF THEMSELVES 25

THE ANIMALS CALLED MAMMALS 27

ANIMALS THAT LIVE IN WATER 29

AMPHIBIANS AND REPTILES 30

BIRDS 32

INSECTS 33

ALL LIVING THINGS GROW 34

VOCABULARY 39

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