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Watch Later 2:38

1A_IS_Ch4.1_DNA(P.19)

By: t0803, Views: 696

1A_IS_Ch4.1_DNA(P.19)

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1E_科學_Ch4.1_染色體 P.20－21

By: t0803, Views: 621

1E_科學_Ch4.1_染色體 P.20－21

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1A_IS_Ch4.1_Chromosomes(P.20－21)

By: t0803, Views: 690

1A_IS_Ch4.1_Chromosomes(P.20－21)

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F.3_Ch.5_definition of health_C_1

By: t1909, Views: 789

F.3_Ch.5_definition of health_C_1

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1E_科學_Ch4.1_細胞分裂 P.22－23

By: t0803, Views: 619

1E_科學_Ch4.1_細胞分裂 P.22－23

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1A_IS_Ch4.1_cell division_ P.22－23

By: t0803, Views: 650

1A_IS_Ch4.1_cell division_ P.22－23

Watch Later 2:48

1E_科學_Ch4.2_人類性細胞(精子及卵)_P.29－30

By: t0803, Views: 607

1E_科學_Ch4.2_人類性細胞(精子及卵)_P.29－30

Watch Later 4:24

1A_IS_Ch4.2_Human sex cells( sperms and ova)_P.29-30

By: t0803, Views: 645

1A_IS_Ch4.2_Human sex cells( sperms and ova)_P.29-30

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1E_科學_Ch4.2_男性生殖系統 (P.31－32)

By: t0803, Views: 652

1E_科學_Ch4.2_男性生殖系統 (P.31－32)

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