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拉斐尔画的一幅是集中了古希腊的所有的优秀的学者的画是()
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大袋蛾成虫雌雄（）。
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Dinner,for English people,is the richest meal of the day and is a very formal meal.Many people even wear special clothes for dinner,so if you are asked out to dinner you must find out whether you are expected to wear a dinner suit,for you would feel very upset if,when you get there,you were the only person in ordinary clothes.Dinner is generally served at about half past seven.All the members of the family sit down together and eat on their best behavior.The head of the family sits at one end of the table,his wife sits at the other end.If there is a guest,he generally sits in the place of honor,which is at the fight of the lady of the house.If there are several guests,the most important is asked to sit there.When the meal conversation is carried on,you should try to get in conversation with the person on your right or left,but you should not try to talk to someone who is a long way from you.
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21.
(单选题) 目前在 Internet 上应用最为广泛的服务是 ( )。(本题1.5分)
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以下属于古今字的是（）
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对头部损伤的伤员，要严禁让其坐起、坐立和行走。
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只有当社会的大部分成员和一部分有影响的人物认为某种社会状况是社会问题时，它才是社会问题，其中权力因素起着非常关键的作用。()
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“海岛冰轮初转腾”中的“冰轮”指的是什么？
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100m3沼气工程有哪些主要建设内容？
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