【单选题】听力原文: When Iraqi troops blew up hundreds of Kuwaiti oil wells at the end of the Gulf War, scientists feared an environmental disaster. Would black powder in the smoke from the fires circle the globe a...
A.
The threat of poisonous desert animals and plants.
【单选题】听力原文: When Iraqi troops blew up hundreds of Kuwaiti oil wells at the end of the Gulf War, scientists feared environmental disasters. Would black soot in the smoke from the fires circle the globe and b...
A.
The threat of poisonous desert animals and plants.
【简答题】阅读理解。 The class was coming to an end. The teacher told the pupils not to draw anything on the wall in order to keep it clean. After class, David forgot the teacher's words. He took a piece of chalk an...