近年来结核性脑膜炎发病率及病死率增高的原因是

A．抗痨药物研制相对滞后

B．结核菌基因突变

C．AIDS病患者增多

D．皮质类固醇的应用

E．不合理应用抗生素

The lecture on how to enjoy pop music is really     worth_____.

A．very; listening

B．well; listening to

C．well; attending to

D．very; attending