题目

苯乙烯是重要的化工原料。下列有关苯乙烯的说法错误的是A. 与液溴混合后加入铁粉可发生取代反应B. 与氯化氢反应可以生成氯代苯乙烯C. 能使酸性高锰酸钾溶液褪色D. 在催化剂存在下可以制得聚苯乙烯 答案：【答案】B【解析】苯乙烯结构简式为，A．苯环能和液溴在溴化铁作催化剂条件下发生取代反应；B．该物质在一定条件下能与HCl发生加成反应而不是取代反应； C．碳碳双键能被酸性高锰酸钾溶液氧化而使酸性高锰酸钾溶液褪色；D．碳碳双键在一定条件下能发生加聚反应。苯乙烯结构简式为，A．根据结After helping Barack Obama sweep to victory in the US election, the president―elect's motto of “change” was Friday declared character of the year by a monk at one of Japan's most respected temples．Using a calligraphy brush to write the single character on a wooden platform as tourists looked on, Seihan Mori，chief monk at Kiyomizu temple in the ancient  capital  of  Kyoto，declared “change” to be Japan's character of the year.The event was hosted by a Kyoto based group that promotes the use of “kanji,” the Chinese characters used in the Japanese language．The public sent in 111, 200 nominations（提名）for the kanji of the year．Of those．a majority 5.42 percent approved of “change,” followed by “gold,” suggesting the Beijing Olympics，and “fall” to show the global market decrease．“I think it is an expression of the Japanese people's wishes to see political，economic and societal changes, as they were impressed by Mr. Obama's message of change,” Mori said．He added that climate change also drew people's attention to the significance of “change”．The Japan Kanji Aptitude Testing Foundation（J K A T F）has been conducting a poll（民意测试）on the years kanji each year since 1995．Last year's top choice was ‘Nise’（fake）．60．What is the best title of this passage?A．“Change” won Japan's character of the year．B．“Change” written on wooden platform．C．“Change” helped Obama win election．D．Japan's love of Chinese characters．61．The aim of the event is to______________．A．popularize standard ChineseB．promote the use of “kanji”C．practice Chinese handwritingD．strengthen the relationship between China and Japan62．From the first three nominated words we can see that_____________.A．Japanese people showed great concern to events of the year.B．the whole world experienced a hard time last yearC．Japanese people know a lot of Chinese wordsD．Japanese people love to follow the fashion of the world63．It call be inferred from Obama's motto “change” that_________.A．Obama tends to make quick changes in order to win the electionB．Obama policy of “change” is well accepted and gives Americans much hopeC．Obama promises to make some changes of American law if elected presidentD．it's wise of Obama to choose the same word as nominated by Japanese64．Which of the following is true according to the passage?A．The chief monk at Kiyomizu temple decided the kanji of 2008．B．3 kanjis are nominated for this year's poll．C．“gold” is also selected the kanji Of the year．D．The kanji event has been hosted by J K A T F for more than 10 years．