题目

完形填空 阅读下面A、B两篇短文，掌握其大意，从题中所给的A、B、C三个选项中，选出可以填入相应空白处的最佳答案。      I’m worried about my son. He’s a young man of 20, but he   1  40. He gets a lot of sleep but he’s always  2  . He doesn't have a job and he doesn't go to school. He doesn't play any sports, because he is usually too tired and he’s too fat. He’s only 1.65 meters   3   , but he weighs 130 kilograms. He  4  eating, especially candy and cake. And he also likes drinking soda. He eats a little  5 , but not 性染色体存在于 [　　] A． 体细胞 B． 精子 C． 卵细胞 D． 以上都有