A：HiLucy.Youlooksohappytoday.Doyouhaveanygoodnews?B:Of1..Tomorrowismybirthday.Myparentsarehavingabirthday2.forme.A：Wowhappybirthday3.you.B:Thankyou.4.yo
A ： Hi Lucy. You look so happy today. Do you have any good news?
B : Of 1. . Tomorrow is my birthday. My parents are having a birthday 2. for me.
A： Wow happy birthday 3. you.
B : Thank you.4. you like to come to my party?
A ： Sure 5. love to. But what day is it tomorrow?
B: Oh it's Tuesday April 4th.
A：Then I'm afraid I can't go to your birthday party. I 6. to go to the guitar lesson. But thanks for 7. me. I hope you can have a good time tomorrow.
B : Thank you.
关于椭圆的一道题目已知B1、B2是椭圆短轴的两个端点,F1、F2分别是椭圆的左、右焦点,过F1作x轴 2020-03-30 …
（2007•崇文区一模）已知双曲线C的中心为坐标原点O，焦点F1、F2在x轴上，点P在双曲线的左支 2020-04-08 …
双曲线C1:x^2/a^2-y^2/b^2=1的左准线为l,左焦点和右焦点分别为F1,F2,抛物线 2020-04-08 …
如图,设作用与同一个点O的三个力OF1、OF2、OF3处于平衡状态,若|OF1|=1,|OF2|= 2020-05-15 …
若F1F2为双曲线的左右焦点,O为坐标原点,点P在双曲线的左支上,点M在双曲线的右准线上,且满足F 2020-05-19 …
质点O受到两个力向量OF1,向量OF2的作用,若角F1OF2=120°,向量OF1的模=6N向量O 2020-07-07 …
力向量OF1,向量OF2,向量OF3处于平衡状态,已知向量OF1=（-2,-3）,向量OF2=（- 2020-07-07 …
已知|向量OF1|=6牛顿,另一力|向量OF2|=4牛顿一个质点O受到两个力的作用,已知|向量OF 2020-07-07 …
帮我.Youareshorterthanme.Whatisthematterwithyou?Youl 2020-10-30 …
A：HiLucy.Youlooksohappytoday.Doyouhaveanygoodnews? 2020-10-30 …