Jack is good, kind, hard-working

Jack is good, kind, hard-working and intelligent; ________; I can’t speak too highly of him.
A、as a result
B、in a word
C、by the way
D、on the contrary
【正确答案】：B
【题目解析】：杰克很好，很善良，很勤奋，也很聪明，换句话说，我怎么说他好都不为过。