“股份制是现代企业的一种资本组织形式，不能笼统地说股份制是公有还是私有”，这一观点表明( )。

A．公有制与私有制都可以通过股份制这一形式来实现

B．有公有制经济参股的就是公有制

C．股份制本身不具有公有还是私有的性质

D．公有制经济占控股地位就具有明显的公有性

A certain clock marks every hour by striking a number of times equal to the hour and the time required for a stroke is exactly equal to the time interval between strokes. At 6:00 the time lapse between the beginning of the first stroke and the end of the last stroke is 22 seconds. At 12:00, how many seconds elapse between the beginning of the first stroke and the end of the last stroke ？（）

A．72

B．50

C．48

D．46

E．44