—You can ______ music here.        

—Yes. But I don't like the music. May I listen to the CDs by S.H.E?      

A. listen      

B. enjoy      

C. see        

D. read

为了提高碳纤维布与构件表面的粘贴效果，要求基面的混凝土强度等级不低于（）。

A.B15

B.C15

C.C14

D.C25