我国现行兵役制的主体是（）
A．义务兵役制
B．志愿兵役制
C．预备兵役制
D．雇佣兵役制
参考答案：A
It suddenly occurred to him ______ he had left his keys in the office.[ ]
A. whether
B. where
C. which
D. that
患儿男，2岁。不慎烧伤，全身Ⅲ度烧伤面积达70%，入院抢救。
该患者WBC的变化为 （）
A.异常增生性增多
B.反应性增多
C.WBC减低
D.淋巴细胞增高
E.单核细胞增高
