膀胱造口术后首次更换导管的适宜时间是: ()
A.术后2周
B.术后3周
C.术后4周
D.术后5周
E.术后8周
参考答案:C
单层建筑物内设有部分楼层者,不管其层高是多少,都不应计算建筑面积。( )
27.What do you think of his suggestion ______ we organize a football club?
A.which
B.whether
C.that
D.What