动态投资回收期是考查项目财务上投资实际回收能力的动态指标，它反映了等值回收，而不是等

以下何项不是癫证的表现

A．沉默寡言、情感淡漠

B．神情呆滞、愚笨迟钝

C．语无伦次、静而多喜

D．智能活动障碍

E．老年人多见

—“What courses are you going to take next semester if you want to receive enough credits to get your degree?”

—“I don’t know. But it’s about time      on something.”

A．I’d decide

B．I decide

C．I’m deciding

D．I decided

David __________ with Cathy for two years before they got married.

A．has fallen in love

B．has been in love

C．had fallen in love

D．had been in love

感观检查认为质量有问题时，应立即停止相应油罐加油业务，取样化验，同时向片区（经营部）报告。

厂内行人要注意风向及风力，以防在突发事故中被有毒气体侵害D遇到情况时要绕行、停行、（）。

A．顺风而行

B．穿行

C．逆风而行

D．快行