题目

6．It is not possible to remove the spot on the carpet without ________(damage) it. 7．The two sportsmen congratulated each other ________ winning the match by shaking hands. 8．Because he was burying ________ in his books, he didn't know it was raining outside. 9．________(injure) in the leg made it impossible for him to walk his way home. 10．It was reported in the local newspaper that a number of priceless works of art ________ (steal) from the gallery last night.将SO2通到显红色的酚酞试液中，发现红色消失，主要原因是SO2（　　）A．有漂白性B．有还原性C．有氧化性D．溶于水中显酸性