A:铁丝在空气中剧烈燃烧,火星四射,生成黑色固体
B:木炭在空气中燃烧生成二氧化碳
C:红磷在空气中燃烧产生大量白色烟雾
D:硫在氧气中燃烧发出蓝紫色火焰
下列位于极地的自然景观是( )
——Hello, this is Jack. Mary I speak to Tom?——Sorry, he isn't in at the moment. If he back, I'II ask him to call you back.