Your plan, as well as his, sounds original. But the company, I think, won't approve _____ of them, for they

are unrealistic. [ ]

A. any

B. both

C. each

D. either

影响劳动力需求的因素主要有：经济发展、经济体制、（）等。

A.人口发展

B.技术进步

C.就业人数

D.人口总量