抗菌药物的选择最好是根据()
A．致病菌的种类
B．药物的抗菌谱
C．细菌培养及药敏试验
D．脓液的性状
E．全身状况
参考答案：C
When he ______the door, he found his keys were nowhere.
A．would open
B．opened
C．had opened
D．was to open
内插式设计
