国家人力资源开发立足于( )开发。
A．整体
B．全国
C．劳动力资源
D．合理配置
参考答案：A
You had better__________because you have to drive back home.
A．not drinking
B．not drink
C．don’t drink
D．not to drink
显色反应必须满足的条件有哪些
