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已知8^a+10^b=25^c,求证2/a+3/c=6/b She ______swim when she was five years oldA.was B.can C.could she will come back in five years（对in five years 提问） she is [five years old]提问 高手帮忙做点英语单选题一、单选题（共 22 道试题,共 66 分.）1.If you （conceal）a secret from your friends,youA.tell them the secret.B.keep the secret hidden and don’t tell it.C.hear them tell you the secret.2.The lost man s She __ __ __ play the guitar when she was five years old （她五岁时就会弹吉他） 单选题~提问只能输入1500个字...发我博客了（本人英文小白...） she was ___ ___ play the piano when she was five years old.(填空) 这句话的翻译是：她5岁时就会弹钢琴. 在比例尺A:1.25=0.8:B中,A,B成反比例这句话对不对 如果a＞0,那么a一定大于a分之1. 如果a大于0,那么a分之1一定小于a?知道的说说,急用! 25.8/0.7＝36.0. Sally will be a doctor in five years.对划线部分提问划线部分（a doctor）（ ）（ ）Sally（ ）in five years? I think Sally will be a doctor in five years.(对划线部分提问）kuai对a doctor 提问 I think Sally will be a doctor in five years（改为否定句 I think Molly will be (a doctor) in five years.就划线部分提问 ------What do you think Sally will be ( ) five years?-------I think she'll be a doctor.a.after b------What do you think Sally will be ( ) five years?-------I think she'll be a doctor.a.after b,in c.over d.at (8.7-0.25-0.25)x[(0.7-0.1)x2+0.3]-(0.55-0.1)x0.25x2 等于多少 谁帮我算下 一个英语单选题--------------务必高手帮忙34、It is not always easy for the public to see _______use a new invention can be of to human life.A：whose B：what C：which D：that1、先分析句子结构,解释为什么选 一个英语单选题的解释-----------高手帮忙24、I didn’t think I’d like the movie,but actually it _____ pretty good.A：has been B：was 请选出答案,并解释原因,重点是解释原因,如果不能解释清楚,请不要作答, 修一条长2100米的路,第一天修全长的1/8,比第一天的1/2还多15米,第一天和第二天各修多少米,剩多少没修? 修一条公路,第一天修了全长的1/4,第二天修了全长的3/10,还剩下360米没有修,这条路全长多少米? Andy has____for five years.Five years____a long time.A.come back home;is B.come back home;areC.been at home;isD.been at home;are in five years' time.到底是 在五年的时间段里?还是 在五年之后的那个时间点?还是 在五年过后的时间段里? Five Long Years 歌词 in five years' time 2.--_____ have you been swimming?-- For five years.A.How many times B.How long C.How often D.2.--_____ have you been swimming?-- For five years.A.How many times B.How long C.How often D.How much3.--Could you please _____ in the room?--Oh,I’m sorry. 湖口小学重新装修教室,原计划投资50万元,实际节约了5分之1,节约多少万元? 白云小学新建图书馆,实际投资22.2万元,原计划节约1.8万元,节约了原计划的百分之几? excel中,汇总成绩表怎么自动生成及格的人数及不及格的人数,还有总分 如何在excel表格中,根据数据不同进行合格或者不合格判定?例如a1 表格数据超过90； b1表格显示优秀,数据79至89； 显示良好. 怎样用电子表格函数求及不及格