There food in my house. [ ]
A. are much
B. is much
C. has much
D. has many
答案：B
Food, ______ rice, Baozi and vegetables, _______ wasted a lot by the students. [ ]
A. for example, are
B. such as, are
C. like, are
D. such as, is
区别以下各组物质的方法错误的是（ ）
A．刻划法区别有机玻璃和普通无色玻璃
B．燃烧法区别棉线和羊毛线
C．用酚酞试液区别稀盐酸和氯化钠溶液
D．用肥皂水区别软水和硬水
