题目

有下列8种物质.①甲烷  ②苯  ③环己烷  ④聚乙烯  ⑤聚异戊二烯  ⑥环己烯  ⑦2-丁烯  ⑧邻二甲苯，既能使酸性高锰酸钾溶液褪色，又能与溴水反应使溴水褪色的是__________________。 答案：解析： ①②③④⑧均不能与溴水反应。答案：⑤⑥⑦Tom hasn’t the cost of the journey to Disney World, but he has made up his mind to go this summer.A. turned out B. pick outC．figured D. calculated