i have been in beijing since 1990
对since 1990提问,是
when have you been in beijing
i have been in beijing since she moved here ago
对since she moved here ago提问,是
how long have you been in beijing
i have been in beijing since 1990
对since 1990提问,是
when have you been in beijing
i have been in beijing since she moved here ago
对since she moved here ago提问,是
how long have you been in beijing
最新问答: 李某等8名同学任意站成一排1,李某站在排头的概率2,李某不站在排头的概率3李某既不站在排头又不站在排位的概率 we can use our pocket money to help the poor children. 改同义句 It's 9:00 o'clock now ;Li Yu_________(sleep). 四)阅读《山居秋暝》一诗,然后回答问题. 本人基础不好,见笑了1.设双曲线x^2/a^2-y^2/b^2=1(a>0,b>0)的虚轴长为2,焦距为2倍根号3,则双 {an}是等差数列,bn={1/2}^an,已知b1+b2+b3=21/8,b1b2b3=1/8,证明{bn}是等比数列 we refer to the above matter. 通过秋写愁的古诗词 将一些棱长两厘米的立方体摆成层数是1.2.3.4.5.10的形状 它的表面积和体积是多少 超级市场在文津街和第二街的拐弯处 The supermarket_________________Wenjin jie 我将要成为一名中学生,英语怎么说 长江的英语Yangtze River前加不加the 过氧化镁可以怎么才能变成镁?氧化镁怎么能变成镁?要化学方程式, 疯狂烤翅中的BT那个,是用的辣椒吗? 怎样用四颗砝码,用天平把直到40磅为止的各个整数磅数物体称出来? 在下面的乘法算式中,每个汉字分别代表1~9中的一个自然数,不同的汉字代 下列字形和加粗字注音全部正确的一项是 [ ] A.笼 罩 (zhào) 一道奥数题比较下面两个乘积A、B的大小:A=9.8732×7.2345B=9.8733×7.2344跪求方法!~~~~~ 如图所示,在光滑的水平面上有一物体M,物体上有一光滑的半圆弧轨道,最低点为C,两端A、B一样高.现让小滑块m从A点静止下 人类能否在四维空间里生活