汽油是多种碳氢化合物组成的混合物,取5.7g样品,在氧气中充分燃烧,经分析测定产生8.1g水和17.

英语,i don't think that i shall fail.but if( ),i would try again.i don't think that i shall fail.but if( ),i would try again.a,should fail b,would fail c,failed d,had failed答案给的a,不理解 Try again.Fail again.Fail better failed,piease try again!翻译汉语? Ever tried.Ever failed.No matter.Try Again.Fail again.Fail better.-- Samuel Becket 翻译这句话 英语作文If I fail again 书信的格式分为哪五个部分? I have never seen so interesting a film ——this one is 用关联词填空 书信格式分为哪六个部分?不是五个部分而是六个部分今天之内回答我2010年6月6日 英语单项选择一题I have never seen __________ interesting film.I have never seen __________ interesting film.A.an such B.quite a C.very an D.such an I have never seen a more interesting film.(同意句转换) The shop s____ in meat and pork but I don't like them.They are too f_____ I finish school ()three thirty ()the afternoon.A at in B in at C on at he leaves__school at___six thirty 用介词填空 Leesons finish at three thirty(对画线部分提问)()()()lessons finish 书信格式分为那五部?回答有积分! 梯形的平行投影有可能不是梯形么 为什么最好可以浅显易懂一点 正方形的平行投影可能是梯形吗?急用... 梯形的平行投影如果不是线段是否一定为梯形? 书信的格式包括哪五个部分有急用 我可以帮你吗的英语单词 我可以创造一个英语单词吗?比如我想给自己取一个独一无二的英文名字,叫做rimden/'rim dən/,这样写对吗? 书信格式一般包括()()()()()五个部分 我可以组什么词 我可以组 什么词 书信格式包括的5个部分 “We have never seen 42 interesting film.”42.A.such B.so a C.so D.such an说明理由 You have never seen such an exciting film,____you? 翻译：“for the third time in a row ,she had failed to keep her appointment” 书信的格式（五个部分） 书信的格式,包括五个部分? I felt I was ___ failure at school,for I failed___ maths third time空格处填什么.第一个是"a“第二个呢? 书信格式五个部分