_________you probably know, a routine credit investigation is th

_________you probably know, a routine credit investigation is the usual procedure before newaccounts are opened.
A、Because
B、Since
C、As
D、While
【正确答案】：C
【题目解析】：句意：也许正如你所知道的那样，在开新的账户之前，常规信贷调查是正常程序。as引导非限定 性定语从句，意为“正如，正像”，在定语从句中充当宾语，指代后面的整个主句。