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Watch Later 4:19

1C_SCJ_4.2__1C_SCJ_4.2_secondary sexual characteristics of female_13

Watch Later 3:27

1C_SCJ_4.2__1C_SCJ_4.2_secondary sexual characteristics of male_12

Watch Later 5:54

1C_SCJ_4.2__1C_SCJ_4.2_secondary sexual characteristics_11

Watch Later 10:48

1A_IS_Ch4.2_ Birth of a new life P.40－44

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1A_IS_Ch4.2_Becoming parents and birth control P.45－50

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1A_IS_Ch4.2_Secondary sexual characteristics, wet dream and menstrual P.34－37

Watch Later 5:18

1E_科學_Ch4.2 為人父母及控制生育 P.45－50

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1E_科學_Ch4.2 新生命的誕生 P.40－44

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1E_科學_Ch4.2 第二性徵、夢遺及月經週期 P.34－37

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