_________ smoking, he would not have got cancer in the lung.

A．Was he given up

B．Had he given up

C．Did he give

D．If he gave up

（）所称危险化学品主要包括爆炸品、压缩气体和液化气体、易燃液体、易燃固体、自燃物品和遇湿易燃物品、氧化剂和有机过氧化物、有毒品和放射品、腐蚀品。