A:硫在氧气中燃烧发出蓝紫色火焰
B:铁丝在氧气中生成四氧化三铁
C:红磷在空气中燃烧产生大量白烟
D:碳在氧气中燃烧发出耀眼白光
The box was heavy but he to carry it.