In order to help the listeners get a better understanding of the new conception, the lecturer ______it with many examples.
【正确答案】 D
【答案解析】解析:本题考查动词的辨析。practice,练习,训练;dominate,支配,控制;estimate,估计;explain,解释。原句的意思是用例子对新概念来进行阐释,使听众能够更好地理解,所以本题选D。