题目

A generation gap ( 代沟) has become a serious problem. I read a  1 about it in a newspaper. Some children have killed themselves（自杀） after quarrels (争吵 )with  2 . I think this is because they don’t often have a talk with each other. Parents now 3 more time in the office, 4 they don’t have much time to stay with their children. As time passes, they both feel they don’t have the  5 topic(话题)to talk about. I want to tell parents to be more time with your 6  , get to know them and  7 them.And for children, show your 8 to your parents. They are people who love you构成细胞的化合物中，含量最多的有机物是  （   ） A．蛋白质       B．水       　C．糖类       D．脂肪