下列关于有机物的说法错误的是（ ）
A：人们习惯称糖类、油脂、蛋白质为动物性和植物性食物中的基本营养物质
B：葡萄糖、果糖、蔗糖、麦芽糖分子式完全相同，但结构不同，因此它们互为同分异构体
C：人工方法合成的酯可以用作饮料、糖果、香水、化妆品中的香料
D：通过石油裂化和裂解可以得到乙烯、丙烯、甲烷等重要的化工基本原料
Hello，I'm Danny．This is my day．I get up at seven o'clock every morning. I wash my face and get dressed(穿上衣服)．Then I have breakfast．After that I brush my teeth．I pack my bag and take nay lunch．I like sandwiches．I go to school by bus．I have four classes in the morning．I have lunch at twelve o'clock．Then I have two classes in the afternoon. I go home at half past three．I play with my friends or watch TV．Then I do my homework. I have dinner with my family．I have a shower and brush my teeth．I go to bed at eight o'clock．Busy day is finished．
中国过春节，西方过圣诞节；中国有民乐、民歌及各种戏曲，西方有歌剧、交响乐和摇滚；中国有长城、故宫，埃及有金字塔，这说明了（）。①文化的多样性 ②文化的丰富性 ③文化的差异性 ④多彩的民俗风情
猜想1：该溶液没有变质 猜想2：该溶液全部变质
