2021-2022 英语周报 高一 XN 20答案

67. One possible versionIn his diary, the man mentioned he wished to sink to the ocean with his wife but fortheir daughter he had to live. Without him, their baby daughter would become an orphan.After drowning himself in sorrow for a short time, he uplifted himself and learned how toraise his baby. Whenever faced with hardships, he would inspire himself with his wifewords-"Take care of our child. " Seeing the little girl grow into a sunny, pretty girl withdouble love from both parents, the man knew he made it to keep his promise.The story was finished and the class was silent. Nobody talked or laughed as usualInstead, it seemed that every student was lost in deep thought, tasting the moving life story.The teacher was sure that the students were reflecting on their replies and that they hadunderstood the moral of the story. Of the Good and Evil in this world, there are hiddensecrets behind them. So we should not really focus on the surface and judge anyone withoutunderstanding them first. Put yourself in others' shoes and then you can really understandtheir behavior

15.83-1【解析】由题得△AF2B的面积即为△AF1F2的面积,当直线l⊥x轴时,△AF1F2的面积c2 b2最大,最大为·2cb2=8,当且仅当b=c=22时等号成立当m=3时,直线的倾斜角为6°,不妨设点A在第一象限,则OF2|=|AF2|=c,|AF1|=√3c=33c c

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