-Did you see the new movie directed by that famous director? It's said to be _______ great fun.

-No. I have been busy repairing all the broken office _______ these days.

A．a; equipment

B．the; equipments

C．\ ; equipment

D．\ ; equipments

氟喹诺酮类药物抑制下列何种酶而抗菌（）

A.转肽酶

B.RNA聚合酶

C.DNA螺旋酶

D.分支菌酸酶

E.二氢叶酸合成酶