内部招募有效的方法是( )。
A．推荐法
B．考察法
C．笔试法
D．使用法
参考答案：A
13．About 90 percent of the equipment presented by the administration，as well as the facilities of our own， ______made good use of in teaching．
A．have
B．has
C．have been
D．has been
白芦笋栽培要点。
