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fe3o4几架 The mistake is the temporary regret,but misses is the forever regret! 四氧化三铁的组成请问配比是1：1么 四氧化三铁的符号 regret的用法有regret to have done吗,有的话,和regret having done有什么区别 making a bigger mistake than the qmd.wangming1.cn mistake itself.So never regret.具体含义不懂 I regret the mistake,waiting for you to forgive Could you ( )your shoes They're too dirty.括号里面填什么?A.buy B.clean C.watch.D.make 已知某氨基酸分子式为C17H35O6N8,求该氨基酸中R基的分子式 How beautiful you are!什么意思 How are you?It is beautiful day.It is sunny 对划线部分提问：I watch TV (twice a week) i watch tv at six thirsy(对划线部分提问)划线部分是six thirsy I like to watch TV very much.(就划线部分提问） （watch TV是划线部分）I like to watch TV very much.(就划线部分提问） -------- How much are your sport shoes? How much are your shoes?(同义句）______ _______ ______your shes_______? 帮个忙,要求说道理. ( ) are your shoes They are biack A.What size B.What color C.How much D.Where How much are your (s ) shoes括号填英语单词 横过路面的雨水篦子管道的埋设深度规范上有要求吗?应该是多少? 谁知道埋地敷设管道埋设深度有哪些要求 青霉素氨基酸的分子式是什么?kuai huida wo yao zhunque daan! watch,you,would,tonight,to,TV,like(.)(连词成句) 再考考你们 Would you like [some/any] apples?Would you like ( )[watch] TV? If someone cares about you,you take no care of yourself. David is watching TV in his room.(对划线部分提问)划线部分：in his room填空：（） （）David watching TV? David is watching TV in his room.(对划线部分提问) 划线部分：watching TV 填空：（） （） David () in his room? He asked"where are you now?"(变间接引语) a ton of / tons of / a pile of / an ocean of 等接可数还是不可数请问这次短语后面接可数不可数还是均可,后面的动词的单复形式又是由什么决定的谢谢 We often watch TV on Friday(对划线部分提问) we can watch TV in the evening对in the evening划线部分提问 氨基酸分子式为什么C可以连4条杆我觉得奇怪,为什么连在C上的一个H可以与C写在一起,成:CH.C\而羧基-COOH有可以写成:-CO//O这样的用横杆的写法有什么规则?另外化学键是什么? 隧道埋深是什么意思