His proposals were _____ with cheers. A.greeted B. grown C. grasped D. guessed
将0.15 mol的MnO2和过量的12 mol/L的浓盐酸反应，与50 mL12 mol/L的浓盐酸和过 量MnO2反应,两者产生的氯气相比(其它反应条件相同)：（ ） A.一样多
有关液氯和新制氯水的叙述中正确的是( ) A.液氯是纯净物，而氯水是混合物 B.液氯无酸性，氯水有酸性C.液氯较氯水有更强的漂白性
下面有关生物技术安全和伦理问题的观点不合理的是 A、对于转基因技术，我们应该趋利避害，理性看待 B、我国禁止生殖性克隆和治疗性克隆 C、我国
________ and short of breath, Andy and Ruby were the first to reach the top of Mount Tai. A. To be tried B. Tired C. Tiring D. Being tired
下列词语中，只有一个错别字的一组是（ ） Ａ、防犯 蛛丝马迹 虚左以待 远见卓识 Ｂ、船仓 丰功伟迹 披星戴月
四边形ABCD的内角A与C互补，AB＝BC＝2，CD＝3，DA＝1. (1)求角和的长； (2)求四边形的面积．
Peter is young, but he__ many foreign countries. A. has been in B. has gone to C. went to D. has been to
