【题目】Eric received training in computer for one year, ________ he found a job in a big company.
A.after that
B.after which
C.after it
D.after this

【答案】B
【解析】句意：Eric接受了一年的电脑训练，之后在一家大公司找到了一份工作。空格处代指前面提到的接受电脑培训一年这件事，表示“从那以后”，故是定语从句，根据有介词after，关系代词只能用which，所以答案是B。