请大家这几道是怎样做？

来源：蜘蛛抓取(WebSpider) 时间：2017-09-04 14:27 标签： 请道士做法事有用吗
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请大家告诉我这几道数学题怎么做今天要做完,列出算式来!1.商店运来一批货,第一天出售23%,第二天出售27%,这时还剩1100吨,这批货物有多少吨?2.有一桶油,第一次取出全桶油的25%,第二次比第一次少取5千克,还剩下20千克,全桶油有多少千克?3.一本书,小英计划三天看完,第一天看了全书的40%,第二天看的是第一天的8分之5,第二天比第一天少看了30页,这本书共有多少页?
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1100÷(1-23%-27%)=2200（吨） 这批货物有2200吨. 1-23%-27%表示剩下的分率,剩下的除以剩下的分率 （20-5）÷25%x2=（千克） 全桶油有30千克. 第二次加上5千克就是第一次,所以减5,但有两个25%,所以乘240%x62.5%=25% 30÷(40%-25%)=200(页） 这本书共有200页.第二次看了25%,40%-25%对应30的分率
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2亿+学生的选择
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2亿+学生的选择
请大家帮忙看看这几道英语语法题该怎么做1.If cities are to remain places to live in ( ) ,it seems imperative that communications in transport should be improved.A.at all B.after all C.above all D.all in all2.During the examination we were supposed to stay in our seats,keep our eyes on our work ( ) to anyone.A.but could not speak B.and not speak C rather than speak D instead of speaking3.Perhaps it will be a long time ( ) from abroad.A.when Tom comes back B berfor Tom comes back C when Tom will come back D that Tom comes back 4."Susie hasn't written us for such a long time.""What do you suppose ( ) to her?"A.that she happen B.to happen C.happened D.having happened5.Modern transportation facilities make ( ) traveling throughout the world in a few weeks.A.it possible B.possible C.it is possible D.possible of
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2亿+学生的选择
1.A at all 用于条件句中的意思是“真的、确实”例如：If you are serious at all,you ought to be working much harder.如果你确实是认真的,.2.C rather than do sth.而不是做某事 instead of doing sth.代替做某事 用rather than do sth.更符合语境.3.B It + Will be+时间段 + before 很久才...4.C 疑问词 +( do you think/suppose )+ 谓语 +其他?5.A traveling throughout the world in a few weeks是真正的宾语 it 是形式宾语 possible 是宾语补足语.正常语序为 Modern transportation facilities make （ traveling throughout the world in a few weeks）possible
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1B 2B 3A 4C 5D
at all更符合语境2.D
rather than和instead of意思是一样的，但C选项有语法错误，应改为rather than speaking。3.B
应该是before Tom comes back4.C
原话应该这样断句：“What--do you suppose--happened to her?"5.D
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