A:胆固醇是构成细胞膜的重要成分,在人体内参与血液中脂质的运输
B:DNA分子碱基的特定排列顺序,构成了DNA分子的特异性
C:蛋白质肽链的盘曲和折叠被解开时,其特定功能并未发生改变
D:RNA与DNA的分子结构相似,由四种核苷酸组成,可以储存遗传信息
My father's day
My father is a teacher. He teaches Chinese. He likes his job and his students. And the students like him too. He goes to work from Monday to Friday. He does not work on Saturday and Sunday. Every day, he gets up at five thirty. At six, he has breakfast. Then he goes running. He goes to school at seven. He has lunch at school. He goes home at five in the afternoon. At six o'clock, he has dinner. He doesn't watch TV. He likes reading(读)books with me. He goes to bed at nine thirty.