有6种物质：①甲烷 ②苯 ③聚乙烯 ④乙烯 ⑤丙烯 ⑥己烷，既能使酸性高锰酸钾溶液褪色又能与溴水起加成反应使之褪色的是 ()

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有6种物质：①甲烷 ②苯 ③聚乙烯 ④乙烯 ⑤丙烯 ⑥己烷，既能使酸性高锰酸钾溶液褪色又能与溴水起加成反应使之褪色的是 ( )

A：③④⑤　　

B：④⑤⑥　　

C：④⑤　　

D：③④⑤⑥

上一题下一题 0.0难度选择题更新时间:2014-12-10 06:24:16

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C

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   In England, everybody knows Jamie Oliver. He has his own TV programs. In these programs, he tells people how to cook healthy food. Everyone likes Jamie's programs because his food is easy to make.
   Jamie wants people to eat healthily. In some schools in England, the food at lunch time was't healthy. One day, Jamie went to a school to make a TV program about healthy diet. He cooked the food with lots of fruit and vegetables. At first the children didn't want to eat because they didn't like fruit or vegetables. But after they tasted the food, they started to enjoy it.
     Now the food for children in schools has become much healthier.

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