现在木炭、硫粉、红磷、铁丝、石蜡五种物质，在空气中不燃烧的是______；在氧气中燃烧能生成一种刺激性的大气污染物的是______；在盛有氧气的集气瓶中燃烧，瓶壁上有水雾生成的是______；产物中有能使澄清石灰水变浑浊的气体是______；在氧气中燃烧时能发出白光的是______．

The race to seek out civilizations around distant stars ________, as an international group discovered

an Earth-like planet in a special zone.  [ ]

A. cleared up

B. warmed up

C. lighted up

D. built up