在暴雨天气驾车，刮水器无法刮净雨水时，应怎样做？
A．减速行驶
B．集中注意力谨慎驾驶
C．立即减速靠边停车
D．以正常速度行驶
参考答案：C
I have two elder brothers, ____ in the army for ten years.
A．the elder of whom served
B．the older having served
C．the older of which served
D．the elder one has served
心包积液最重要的检查措施是以下哪一种？（）
A.心电图
B.超声心动图
C.X线
D.抽血化验检查
E.心包穿刺+心包液生物学、生化及细胞分类检查
