是一个数学题:a+1/a=4（0＜a＜1）,求根号a减根号a分之一x_birdie是一个数学题:a+

这名服务员在餐馆给我们提供了很好的服务 the waiter ()()good service in the restaurant The customers are pleased with the_of the restaurant A.baiance B.exper C.surface D.service 表示“附件”有2个词,attach和enclose,请问二者之间的区别和用法, You are willing to be me the bride?Treasure!Waits for your reply? 为什么 怎么填The clock waits for you to be in your slightest phase of sleep_____waking you up.A.before B.towards C.upon D. till Thank you _____your flower.A.toThank you _____your flower.A.to B.at C.for ---What's your mother?--- _______.A.She is fine.B.She is a forty .C.She is a teacher 求一篇关于历史世界史的作文 急 大约400字 左右 世界史人物的论文初二水平,简单一点,字数最好别太多300字~800字最好 怎样才能改正磨蹭的毛病. —Do you like to eat _____?—Yes,I do.A.tomato B.broccli C.banana 怎样让孩子该掉磨蹭的毛病? I can accompany in your side 是什么意识? Nine____ten peope will agree with what you say. 孩子老是磨蹭怎么办?像个老太太似的,干啥都慢,一说她她就说能改,可是回头还那样怎么办? 改错 John has made up his mind completing the medical course in one year. The+menu+bad+only+10+dishes+and+the+service+was+not+gootd+at+all! discovery的中文意思是什么 discovery island 中文是什么意思 discovery车贴含义discovery车贴是什么意思,代表什么组织? discovery是什么意思急! While it ( )(rain)heavily,he went out. HOT_____ it was ,he still went outA .even though B .however C.as D despite选哪个呢? f.t island mv的 意思?看的是没有字幕的.. Sorry,Sa-Rang-HaeHae-Yo!啥意思? Lily is poor __ maths,so she gets poor marks in the exam.A at B with C by D for 为什么? 连句子：he、to、7:15、shool、at、usually、goes、morning、every 用所给词的适当形式填空.有两个地方不懂.（1）If your homework ＿（do）,you can go out to play.（1）If your homework ＿（do）,you can go out to play. （2） My mother has some clothes＿（wash）every morning.我看 相对分子质量为30的有机气体和无机气体有哪些还有是44的 相对分子质量为28的气体 急求相对分子质量是26和28的气体,28的至少要3个,都是中学常见气体实验室制取少量C2H2化学方程式是啥 梦到自己和很多棺材在一起是什么意思呢? 相对原子(分子)质量为28的气体有哪些越多越好