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在多位数3785940241中划去6个数字,使剩下的4个数(数字先后顺序不能改变)组成的四位数最小.这最小四位数是(). 怎么把真分数化成整数?怎么把带分数化成整数?( 能读明白的)字数多一点可以 已知三角形三边abc成等比数列,abc的对角依次为ABC,则sinB+cosB的取值范围是…… 分数单位是1/8的最大真分数是()至少在添上()个分数单位才能变成整数 整数是否有最简真分数?例如6这个数?只有分子小于分母的分数才是真分数吗? 真分数一定比整数小.判断对错? 整数是真分数还是假分数? 数列an满足a1=1 a2=3/2 an+2=3/2an+1-1/2an n属于正整数(n+2和n+1为角标)(1)记dn=an+1-an求证dn为等比数列(2)求数列an的通项公式(3)令bn=3n-2求数列{an*bn}的前n项和Sn 为了支持 VLSM 和 CIDR,RFC 1723 在 RIP 消息报头中添加了什么字段? When l entered the bedroom,l found the boy still_____( lie ) in bed.在先等 When I got home,I found my brother _____(lie) in bed 根据所给单词的适当形式填空 1、When I got home,I found my pet dog ____(lie)on the floor,dead.2、Jack _____(swim)in the river at the moment.3、LeiLei's words made her____.A happily B ngrilly C crying D angry4、Close you ____(eye)and guess what is in my hand.5、It is too eas When I went home,I found a package inWhen I went home,I found a package in the mailbox our room is big ,but () is bigger than ()A their:our B their;ours C theirs:ours D theirs:our 问几个同义句 the ropes are long the se duck are fat our sitting room is big please sit down Our room is not as big as yours .这句话的意思是什么? there is a big sitting room翻译 两个圆的圆心相同,大圆和小圆的面积分别为4S和S,求圆环的宽度(用含S的代数式表示) 大圆的半径是R,小圆的面积是大圆面积的九分之四,求圆环面积. 大圆的半径是R,小圆的面积是大圆面积的九分之四,求圆环的面积 要有讲解 4个不同的求,4个不同的盒子,把球全部放入盒内恰好有一个盒子不放球,共有几种放法?从4个球抽出2个放在一盒子内,再从2个球抽出一个放一个盒子内,再拿最后一个球放一个盒子内,C4_2*A4_1*C2_1*A 求所有题答案,17题到20题详解 17~20回答,一共4题 17:20前给答案.It means "No Parking".(No Parking划线)划线部分提问.What ____it____? 是Does he want any cake?还是Does he want some cake?纯属为完成任务. He can find his eraser in his room.(就划线部分提问)(He can划线)( )in his room? What does he want?What does he want 为什么want后不加s he wants .这个是回答 单三后面加s 我知道 但为什么上面不加s He is in the room.(改为复数) The eraser is under the desk.对"under the desk"提问 your,your,eraser,pencil case,put,in 【这个冬天谁陪我渡过?】 怎么翻译成英语? 简述只有中国共产党才能救中国,只有中国共产党才能发展中国 为什么说中国共产党的产生是中国社会发展的必然要求?