Mr Wang went to Nanjing ____ October,1998 and came back home ____ the morning of Nov.5.
A.at; in B.on; at C.in; on D.by; from
Mr Wang went to Nanjing ____ October,1998 and came back home ____ the morning of Nov.5.
A.at; in B.on; at C.in; on D.by; from
C
主要测试介词。有上下语境可知译文：1998年10月，王先生去了南京，11月5号早晨回来的。故此两个介词均属于特例：月份前；具体的某天的上午、晚上等。