第18题: [单项选择]The more chemicals we send into the air, the less land we will possibly have because __________. A. chemicals will wash away fields B. water levels will go up C. more and more land will be covered by ice D. none of the above 参考答案:B 答案解析:[解析]推理判断题。根据文章第四段:人类的活动往大气层排放了太多化学品,科学家担心这会致使全球转暖,南极冰帽融化,海平面升高,而海水泛滥则会冲毁大量的土地。由此可推知B)项为正确答案。A)项“化学品冲