已知双曲线c:x2/a2-y2/b2=1的左，右焦点分别为f1,f2,是双曲线的左顶点，p(_a2)

lucky means? more money means more sadness是关于英语辩论赛的题目 希望大家多给些建议 寂静的反义词温暖的反义词火热的s欢乐的反义词 In our country the cold weather in the north-----sharply---the hot weather in the southAcombines ,with B relates ,to Ccompares,to D contrasts,with if i was simple in the mind,ever thing would be tracking number是什么意思 tracking number在提交信用证的时候,客户要求我提供track number !这是什么意思呢?请各位高人指点~~~谢谢 Your tracking number is ebay卖出东西后tracking number怎么查到哦?如题.我是卖家,我怎么查tracking number I am going to save money（）six months.中间填哪一个介词 求SM the balled 的太想念和HOT times MP3的格式~答谢~泪谢~ 连词成句 1 waiting,so,he,of,outside,long,kept 2 I,both,brother,my,and,are,school,at 3 to,fires,usually,water,use,put,out,people 4 ago,house,this,five,built,was,years,white so do keep not me long waiting.连词成句 人教版英语必修七课文以及单词录音, Can I leave this door open at night?A.should better notB.would better notC.had better notD.had not better请问选择什么 为什么? 英语谓语单复数形式问题请问在英语中,两个动词ing形式并列做主语,谓语动词应该用单复数什么形式?请给出例子, 寻找一首歌,歌词里有yes i believe you,yes i believe you什么什么的 He has little milk to drink,___ ____? My little brother dislikes_____(drink)milk用所给词的适当形式填空 risen什么意思 I hate that i leave you make me breath less 这是啥意思 连词成句1.from,move,any,big,you,of,away,furniture,top,could,fall,that,on 2.open,leave,door,the Where we are going____ ____ ____(由……决定)youWhere we are going____ ____ ____(由……决定)you now. Dracula是谁 Last Friday he kept us waiting for him ( ) an hour. He kept ---(wait) for her for about half an hour. 5、It took us an hour _____for Liping Yesterday.A、wait B、to wait C、waiting Some of us are very well.( ) are some of you? things are no longer as/like/that/what they used to be选择的原因 things are not what they appear to be,nor are they other otherwise. 1.The experience in the army is _______（help）to him2.I have to have a _______(medicine）examination before going abroad3.Mr Smith is very ________（knowledge)scientist4.There are many_________(shelf）in the writer's room CBP是什么?