种群间的协同进化
参考答案：
指一个物种的性状作为对另一物种性状的反映而进化；而后一物种的这一性状本身又作为前一物种性状的反映而进化。
_____the danger from enemy action, people had to deal with a severe shortage of food, clothing, fuel, and almost everything. [ ]
A. As soon as
B. As long as
C. As far as
D. As well as
门诊调剂室发生差错事故的主要原因是：
A．责任心不强，玩忽职守
B．专业技术水平不高
C．工作秩序混乱
D．行政管理工作不细
E．药师待遇差、地位低
