题目

 以下物质：(1)甲烷 (2)苯 (3)聚乙烯 (4)聚乙炔 (5)2­丁炔 (6)环己烷 (7)邻二甲苯 (8)苯乙烯，既能使KMnO4酸性溶液褪色，又能使溴水因发生化学反应而褪色的是( ) A．(3)(4)(5)(8)                           B．(4)(5)(7)(8) C．(4)(5)(8)                              D．(3)(4)(5)(7)(8) 答案：C阅读下面短文，然后根据括号内所给汉语的意思写出单词的正确形式（每空一词）。Henry works in a factory. He comes from a poor family and was in school for only four years. He has to do more work, but he’s paid 1      (较少的). He likes to watch football matches very much and 2       (花费)a lot of time on it. One evening there was a big football match. He 3      (借)some money from his friend and hurried there. There were a lot of people there. And all the tickets were 4      (卖)out. He 5     (感到)sorry for it. He saw a pole(电线杆)outside the playground and climbed it up quickly. A policeman came and said, “It’s dangerous to stay on it. Come down!”“Wait a minute, please!” Henry said and just at the moment the policeman 6        (听到) cheers in the playground and asked in a hurry, “Which team has kicked a goal?” “Ours!” “Wonderful! You can stay there but take care,” the policeman said 7        (高兴地) and left. When the match would soon be over, he came back again and asked, “Who’s 8      (赢)?” “Theirs, 3-2.” “Come down,” the policeman said 9        (生气地). “Such a match that we shouldn’t10         (观看) it.”Henry had to come down. But soon they heard cheers again. The policeman said in a hurry, “Climb up quickly and see who’s kicked a goal!”