You must be very tired. Why not a rest? A. stop taking B. stop to take C. to stop taking D. to stop to take
多角度认识物质,能帮助我们更全面了解物质世界。以氧气和二氧化碳为例,回答下列问题: (1)认识物质的组成和构成 ①从宏观上看,氧气和二氧化碳都由 (
经过初步预算，全程共约1318公里的京沪高速铁路投资额在1500亿元以上，其中国家财政负担1100亿。国家通过财政为京沪高速铁路筹集资金表明（
以下化学用语正确的是 A．一CH3(甲基)的电子式为 B．硝基苯的结构简式： C．甲醛的结构式： D．乙醇的分子式：CH3CH2OH
You can' t catch me! Janet shouted, ________ away. A. run B. running C. to run D. ran
— Come and join us, Betty!— I’m afraid I can’t. I’m too busy now. If I ______ time, I will certainly go.A. have B. have had C. will ha
--Would you like to go shopping with me, Kangkang? -- . A. No,I'd like to B. No,I can't C. Sorry,I'm afraid not. I have to do my homewor
阅读下段文言文，完成11—14题。（16分） 赵且①伐②燕。苏代③为燕谓惠王④曰:“今者臣来过易水⑤, 蚌方出曝⑥而鹬⑦啄其肉,蚌合而拑其喙。鹬曰:
