已知对任意实数x，y，恒有fxy=fxfy.求f0的值

goal和purpose用法上有什么不同 《公共怒触不周山》中“天柱折,地维绝.”中的“折”怎么读说明原因 purpose和goal都可以作目标讲,但是这两个有什么不同吗? 藏在故事里的精彩500字 What do you think of music?my favorite.it's——for me to study of all the subject in school.A.more difficultB.the most difficultC.less difficultD.the least difficult请问为什么 并求翻译（不要百度翻译） 踯躅的拼音? “踯躅”的拼音怎么写? 踯躅.怎么拼?拼音 插翅虎 THE WINGED TIGER怎么样 The girl makes a l__ by selling the matches The boy makes money by selling newspapers是什么意思 ( )4.The businessman ________ money ________ the poor girl to study.A.p( )4.The businessman ________ money ________ the poor girl to study.　　A.provides;for B provide;for C.provides;to D.provide;to Jane tells us a she later was a hight school physics teacher的汉语意思 英文好的同学帮下下忙~- Nancy was badly injured in the accident yesterday and she was sent to hospital.- Oh,really?I_________.I ________ visit her.选择一项：a.didn't know; am going tob.haven't known; am going toc.don't know; will go tod 踯躅读什么? 踯躅读什么音音标音标,我不咋地懂,超过了我的学识范围~~~ 某非谓语,一时纠结住I went into this with my eyes open so i guess i only have myself to blame.在下了解前半句的意思是“我明知道做这事的后果的”（with eyes open某短语,哈） 那么后半句have myself to blame,我怎 一个关于非谓语的纠结问题,they investigated humour using the new technique这里的 using 这个部分 是做 句子的状语对吧?修饰的是VERB 这个句子读起来很对很好吧?-IESLT原话 可是修饰动词的状语 为什么要 非谓语中一个纠结了我很久的问题.非谓语不是有三种形式吗 to doing done Doing表示的是主动和进行 但他为什么还能有being done的被动形式啊 那他到底是主动还是被动呢 She went to the Hollywood in search of f____ and fortune Buckingham What dose he say?Do you belive?(合并成一句子） She predicted that he would marry a doctor.这里为什么用would 不用will 用英语,快开学了,帮帮忙 快,要开学了1.妈妈让我去买油,我正在前往卖油店的路上遇见一个朋友,我对他说妈妈让我去买油.这个“让”如果用let,那用不用过去式?为什么?（let过去时还是let,书上有）2.假如一个人对我说 英语翻译她是我所认为的美女.我可以这样说吗：She is what I think a beauty.总感觉有些不对,应该怎样说呢,要符合原句意思,不要用I think she is a beauty.还有可不可以 She is what I think a beauty looks like. 快开学吧 英语怎么说 就快开学了,我应该怎么办的英文怎么写 踽踽踯躅怎么读 踯躅怎么读,有声调的, 英语考试总结怎么写