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)

如下图为什么选D? 如图27题选什么,（初中英语） （ ） little kids can only do ( ) little homework.A.Such;such B.Such;so C.So;so D.So;such ___I haven't got a camera!___you should buy ( ),it's useful!A it B one C that —Excuse me,is this seat yours?—_____.That man got his book and left a few minutes ago.A.I think so B.I don't think so C.I hope not D.I don't know Some photos were not just pictures of the ____ world.They also showed people's feelings,like other kinds of art.A.true B.simple C.real 选哪个呢...麻烦说下为什么哈, 英语短文改错求答案 给我这篇英语短文改错的答案Money not only can benefit people but also can do harm people.有做过这篇阅读的么 英语强人么?错了！不是阅读 是改错 英语短文改错,求解答 急用.英语短文改错A man was driving on the road.suddenly his car stopped.原文太长,谁知道这篇文章,一共十处 英语短文改错（请帮我改一下）Ladies and gentlemen,May I have your attentions,please?Now we are 21.--------looking for a passenger,Mr.Brown,he is from America.22.-----------And he`s now leaving Beijing to America on Flight 2748.23.------- 英语短文改错.急用.Time flies and I will graduate from high school very soon Review what happened in the past helps me succeed in the future.Lueky enough ,I have caring teachers and friendly classmate.I still remember once when I didn't do wel 英语短文改错A couple of month ago,I went to Qingdao with my parents.I learned that it lied in the eastern part of Shandong Province.It is far away from the city in what we live,so when we got there it was getting dark.When we got off the bus,th 一道英语短文改错题Last Sunday morning when I got up,to me great surprise,1.________I found that we had a big snowfall.I was very excited because 2.________it was a long time that I had ever seen such a heavy snowfall.3.________So I decided t 2009年全国一卷英语答案谁有? 05~09年全国卷1英语所有选择答案(只要答案 2010年 全国一卷英语A卷的答案我是A卷 望说明清楚. 急求09年1月自考全国英语二答案考过了想对对答案, 两篇英语短文改错求答案Many scientists believe that life begin in the ocean.For age man has used the ocean to discover and explore new lands.Now man spends a great deal time and money discovering the ocean.We know it is rich at minerals whi 英语短文改错 急The weekend is coming!I will be so busy as a bee .On the Saturday morning,I have to rush to my math class.After it is fishing,I will have a dance class.I like danceing because it gives myself a chance to shape my body.I will pay People say that a father's love is as a mountain：heavy and silent.It is heavy because he give all his love to us and it is silent because he does not know how to express.My father has never told me he loved me,so i did not think he loved me and som 英语问题!急救!I would gone here with you but I___too tried then.A.were B.had been C.was D.have been为什么不能选择B。。虚拟。。。不是有IF的么。。 I happened____ it in some book.A.to read B.to have read C.that I have read D.that I had read此题答案为B,可为什么不能选A?请给我一个让人完全信服的答案吧! 1.I live _____ ,and I don't have to take a bus to work.A.nearly B.close C.nearbyD.fail我选的是A,能不能区分一下两个有什么不同?2.正在后面追赶我的奇怪生物一定是外星人.答案写的是：The stange (creature) (chasing) 英语救急公司来个外国客户,我负责带他去看下宾馆,请问我该说些什么才得体呢? 英语!救急.A：What a sunny day it is!Look,the sun is ______.B：It's not cold.lt'snot hot .lt's______today.A：______have we for our picnic?Have you any______?B：Yes,look,oranges,bananas and_____.A：How about_____?l'm thirsty,now.B：Bread,____ 英语救急,快Do you have anything in mind that you would like for supper Can you see the dormitory whose window is broken?we learn a lot from the theacher who worked in the science aboratory?Jack chen,for whom life had once been very hard,id succe 救急~菲律宾用英语怎么说啊? 救急~您一路辛苦了,用英语怎么说?还有菲律宾用英语怎么说啊~救急 救急!土包子用英语怎么说 江湖救急.衣原体用英语怎么说? 国际语用学研讨会 用英语怎么说 救急!50分.在瑞典召开的.国际语用学研讨会 这几个字,用英语怎么说啊?救急.