【题目】Mary is lovely, kind and full of energy. __________，I can't speak too highly of her.
A. As a result B. By the way
C. In a word D. On the contrary
在线课程【答案】C
【解析】句意：玛丽可爱、善良、精力充沛。总而言之，我对她评价很好。in a word总而言之；符合句意。as a result结果；by the way顺便说起；on the contrary相反；不符合句意。