It's cool. You can _____ your sweater. [ ]
A. wear
B. wears
C. wearing
答案：A
下列物质中属于氧化物的是（ ）
A．干冰
B．纯碱
C．食醋
D．花生油
“乐天年”礼仪储蓄定位于（）岁以上老人。
A.30
B.40
C.50
D.60
