Never form the habit of smoking because it human beings.
A. does harm with
B. is harmful to
C. is harm for
D. does harmful to
网友回答
A. does harm with
(答案→)B. is harmful to
C. is harm for
D. does harmful to
解析：短语辨析. be harmful to 对……有伤害的,是形容词词组结构;do harm to 造成危害。 是动词性结构。根据题意,永远不要养成吸烟的习惯,因为它对人体有害.选B.