Page 3 of Unit 1, Book 21
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1.Page 3 of Unit 1, Book 21
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2.(Unit 1, Unit 2, Unit 3, Unit 4 and Unit 5), and Unit 8 is optional task. Send me the naotu link.
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3.1, 1, 3, 5, 11, 21,()
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4.0 ,1 ,3 ,8 ,21 ,( )
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5.0 , 1 ,3 , 8 ,21 ,()
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6.Please finish quesion 2 on page 1, quesions 2(2) and 3(2) on page 2, questions 2 and 4 on page 3, question
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7.证明:(1)当n为奇数时,3 1( 21);(2)当n为偶数时,3| (21)。
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8.3 > 1 > 21 > 2 > 32 > 1 > 31 > 3 > 2
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9.In the title, “What’s Behind Phantom Cellphone Buzzes” (Book 1, Unit 5), the keyword “phantom” means
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10.Unit 3