【题目】What is well known to us all is that success ________three important factors：talent，diligence and luck.
A. consists of
B．is consisting
C．makes up
D．is made up
在线课程【答案】A
【解析】consist of意为“由……组成”，不用于被动语态，意思相当于be made up of。句意为“我们都知道成功由三个重要因素组成：天分、勤奋加上运气。”