We had a ______ lesson in children education yesterday.

We had a ______ lesson in children education yesterday.
A、deep
B、profound
C、deeply
D、steep
【正确答案】：B
【题目解析】：deep 深的；深入的；profound 印象深刻的；deeply 非常；steep 夸大的；句意：昨天我们上了一堂_____的儿童教育课。因此B 符合题意。