使用热压灭菌器时，当灭菌达到规定时间后，一般应先

A．喷冷却水

B．打开放气阀

C．无严格规定

D．除去热源，停止加热

E．开启灭菌器柜门

---Has anything caught your eye in today’s newspaper?

---Yes. A new eight-kilometer-long road is under ________ that links the port area with the motorway system.

A．consideration

B．construction

C．conservation

D．constitution