I            to be quite afraid to live in that city, but now I have             to the life there.  [ ]

A. used; been used      

B. used; used  

C. was used; got used    

D. got used; been used

非晶质矿物的特点是：有固定熔点，象硬化了的液体。如天然沥青，火山玻璃。