点C是线段AB上的一点且AC：CB=2:3D是线段AB的中点如果BD=10cm求线段CD的长.

confirmation of employment是什么意思 termination of employment是什么意思 dates of employment是什么意思 it makes no sense to do 和doing 的区别? the funny story makes us(是doing还是to do) gene pool 什么意思 Removed from the gene pool.Removed from the gene pool. 出pool是什么意思? pool是什么意思 put out a/the/不填 fire?有冠词没?上课老师说只有make a fire加冠词,可是他又说put out a fire.好迷茫啊 . i lost my wallet.what a ___ we have enough time （）用leave的正确行式.能用to leave吗?leave解释离开. sleep less than is good for them这句话怎么翻译比较好1998年1月四级里的 cut-off怎样翻译 something的用法 Lucy是班上最高的好女孩 用英语怎么说 那个正在吃冰淇淋的女孩是LUCY用英文怎么写 A good language learner always是怎么翻译的? something 的用法在疑问句中的用法? Which season is the _________?(cold) I like the girl whose mother is an actor.讲解并翻译这个句子 I know the girl whose mother is a teacher.我知道这个妈妈是教师的女孩.我知道这个女孩的妈妈是教师.哪个翻译是对的?为什么?或者怎样更准确? the little series唱的london bridge is fall in down 歌词为什么找不到了啊?歌词全改了呀? in December 1952,a very thick dark cloud came down over londonIn December 1952,a very thick dark cloud came down over London.It was the worst smog (烟雾) Londoners never saw.Much of it was bad factory smoke.Nearly fifty people died in road accident 全部:sound of my oh please baby let me know how the sun shies in your eyes什么意思啊 The sound of barking的意思 sound of destiny是什么动画片 creat something out of nothing 英汉互译 进行运动— 运动鞋— 很了解— play for_ score for_ 在白天— walk home_ take sb for a walk - creating something out of nothing是褒义还是贬义啊? He can draw well在四岁时