影响人力资源质量的主要因素有()
A、遗传
B、营养因素
C、人口的年龄构成
D、其他先天因素
E、教育方面的因素
参考答案:A, B, D, E
With a lot of difficult problems________, the newly-elected president is having a hard time.
A. settled
B. settling
C. being settled
D. to settle
砂桥卡钻的主要原因是什么?