我国的《公路沥青路面再生技术规范》建议水泥等活性填料一般不超过（）
A.1%
B.1.5%
C.2%
D.2.5%
参考答案：B
________we gave him something to eat, he would save it up for his little sister.[ ]
A. Whatever
B. However
C. Whenever
D. Whichever
治疗血虚，常配补气药，其根据是（）
A．气能生血
B．气能摄血
C．气能行血
D．血能载气
E．血能生气
