Construction of the gigantic office building in this city was for years intermittent .

A．stopping and starting at intervals

B．something that will happen soon

C．being watched with keen interest

D．anything that comes and goes

技术使用费与技术需求的关系是______

A．技术使用费直接影响技术需求
B．技术需求与技术需求的弹性很大
C．技术使用费与技术需求的弹性很小
D．市场需求直接影响技术使用费