题型:问答题 简答题 (12分)写出以下化学方程式,并注明反应类型。(1)乙烷与氯气反应生成一氯乙烷 ; (2)乙烯与溴的四氯化碳溶液反应 ; (3)工业上用乙烯水化制乙醇 ; (4)聚丙烯的生成 ; 查看答案
题型:问答题 简答题 It was not ________ she took off her glasses ________ I realized she was a famous film star.[ ]A.when; that B.until; that C.until; when D.when; then 查看答案