A great many teenagers became ________ playing computer games,wasting their precious time. [      ]

A. accustomed to  

B. addicted to

C. used to  

D. due to

江某做试题、答案买卖生意多年，收入颇丰。江某出售下列考试试题、答案，涉嫌非法出售试题、答案罪的有（）。

A.《教师法》规定的教师资格考试答案

B.公务员招录考试答案

C.某省高考试题和答案

D.全国奥数竞赛试题和答案