23根的细胞中不含( )。A.细胞质B.细胞核C.叶绿体D.有色体

23根的细胞中不含( )。A.细胞质B.细胞核C.叶绿体D.有色体

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28、Uncle Sam sent him a _____ bicycle as a birthda

28、Uncle Sam sent him a _____ bicycle as a birthday present.山姆大叔送给他一辆新的红色运动自行车作为

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16. The young seedlings remained alive _____ the p

16. The young seedlings remained alive _____ the protecting snow.A. underB. b

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