酒炙药物对升降浮沉的影响是（）。
A.收敛
B.降下
C.升提
D.下行
E.无影响
参考答案：C
.— Sorry, I _______ to buy the book you need for you.
— Never mind. _______ it myself after school.
A．forget; I’d rather buy
B．forgot; I’ll buy
C．forgot; I’m going to buy
D．forget; I’d better buy
适量下列物质与足量的水混合后，能形成溶液的是（ ）
A．面粉
B．花生油
C．二氧化锰
D．碳酸氢铵
