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题目：
单选题
A含烃基活性基团
B是高分子物质
C由亲水基团和亲油基团组成
D结构中含有氨基和羧基
E含不解离的醇羟基
答案：
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上睑下垂是指向正前方注视时，上睑缘遮盖角膜上部超过角膜的（）
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异步电动机的最大转矩与电网电压的平方成()。
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在制备培养基时，常需用比色管法，比色来调整pH值，而制标准比色管时常用哪种缓冲液（）
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下列是毛泽东写的诗句有（）
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在停留刹车刹住时能否预位自动刹车：（）
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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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下面哪些疾病属光变态反应性疾病（）
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治疗“疟母”的代表方是（）
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什么情况下须采取隔离式探放水？
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控制图的控制限（）。