目录
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UNIT 1 1
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THE LONG VOWEL SOUNDS 1
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UNIT 2 17
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THE SHORT VOWEL SOUNDS 17
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UNIT 3 33
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LET’S DO MATH! 33
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UNIT 4 49
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GOOD HABITS 49
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FUN READING 65
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THE FARMER AND THE RADISH 65
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VOCABULARY 73
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