多发于青年男、女，好发于颜面部或手背部的扁平丘疹是（）
A.扁瘊
B.疣目
C.鼠乳
D.跖疣
E.丝状疣
参考答案：A
下列物质的溶液加热蒸发至干、灼烧，所得固体的成分不相同的是（ ）
A．FeCl2、Fe2(SO4)3
B．FeCl2、FeCl3
C．NaHCO3、Na2CO3
D．Mg(HCO3)2、MgCl2
The children were left _____ of a neighbour when they were on holiday.[ ]
A. in charge
B. in the charge
C. under charge
D. at charge
