【o9770221】評論
(A) on: 在...上(B) to: 向；往；到(C) from: 從...起，始於；從(D) of: 屬於；用……做成的；由……製成The reason why sea otters hold hands while sleeping is so that they don't drift away from each other when they are in deep sleep翻譯: 海獺睡覺時會合起雙手的理由，是因為如此當牠們熟睡的時候不會漂離彼此。答案是選項(C)from。