纯碱化学式

My grandfather often does eye exercises?She usually does exercise.My grandpa often does eye exercises. 如果时间回到过去,死去的人还会活过来吗?我想问,假如速度超过光速,假如回到过去,假如时间回到明朝,人能回到明朝吗,还只是时间能回到明朝（还是人还在现在的社会里?）还有,假如时间回 If he doesn’ help me,I can’ finish the work.怎么改简单句 人民英雄的故事像黄继光,——————————————-——————————————事例 he can finish the work by himself 的同义句 He___ ___ ___finish the work ____ ____ _____ they also need to learn french .b__ people in their country also speak french .首字母填空, 关于逆境成才的故事,快啊,急! 试述近代史上中国“向西方学习”的历史进程、基本内容和相关结果? 元谋人的体质形态简短的语句来说 （however）hard she tries,she can hardly avoid making mistakes in her homework.为什不用although (However)hard he tries,he canhardly avoid making mistakes in her homework,为什么是however? She shook his head___(hard)为什么答案是hard而不是hardly Kay never wins,h...hard she tries为什么填however,however不是这样用啊? （ ）her,she always tries to avoid me ,pre（ ）her,she always tries to avoid me ,pretending not to have seen me at all.（approach） 不管我什么时候接近她,她总是试图躲避,假装根本没看见我. how long does learning Japanese take every day? 近代史知识梳理 元谋人门齿化石、北京人头部复原像、山顶洞人头部复原像的发现时间、特点是什么? 高二下近代史知识要点 谁会泰语…帮我翻译翻译上面这段话 抗日战争期间的历次战役有哪些? 时光机器真的可以制造出来吗?真的可以回到过去吗?我认为可以制造进入未来的机器,回到过去的不大可能啊! 再等几百年,科技发达了,人类可以造出时光机器,让人类超过光速,回到过去吗,穿越未来,可以实现吗? 真的有能回到过去的时光机器么~ 真的没有可以让人回到过去的时光机器吗? be动词后面形容词可以用比较级吗?比如说：The man is（ ）.He does exercise every day.括号里是填strong的原级还是比较级?这种词的比较级应该填在什么后面?不要讲太深）最高级一般用在什么后面? our monitor takes more exercise every day,for he belives he does,he'll be.A.the less,the strongerB.the more,the thinner C.the more,the stronger D.more ,stronger这个答案是B吗?我觉得应该选 C.到底哪个对? He spends more than an hour (exercise ) every day We should exercise(everyday & every day)to keepWe should exercise(everyday & every day)to keep healthy. 享受孤独 用英语怎么说? 《不贪为宝》本文反映了子罕 （） 生活态度,通过（ ）描写来刻画子罕的性格. 说明"虚心使人进步"的具体事例 虚心使人进步 骄傲使人落后的事例200