探究凸透镜的成像规律

___ ( after in before for)a short time ,however ,we learn what to do and what to(say talk tell speak)为什么,第一空为什么是after ,不是in也行吗?for好像也行.第二空为什么是say,四个好像都可以? Daniel ()Jenny is friend. this is as far as we go.this是主语,is系动词.as far as 是什么成分? be动词Lily is my( ) friend is anybody looking after you—Is anybody looking after you?—No.I'm after a size 40 V-neck pullover in grey.—The best I can do is a 36.—Could you order me one?—I should imagine so,yes.If you leave your address,I'll contact you.帮我翻译一 填代词：This is my cost.Could you look after___ for __? 这个音标单词是什么?[i:kwəlz] 26.It is high time that such practices ____.A) be ended B) were ended C) are ended D) must be ende选哪个? 颂歌献给党 读后感 Please fill in the booking form to Geodis- Jason.Please follow attach SI and arrange the booking to below contact person谁的英语好一点,把这两句话翻译下,要准确.急 请问,希望之星英语风采大赛复赛的流程是什么?具体是什么样的?已经知道了，缤彩会及时选出最佳的答案的~ 希望之星英语风采大赛复赛题目要图 We are so bored,and we ____(fall)asleep用所给动词的正确形式填空 my job js look after you帮我翻译下 2013年六年级下册语文课本 德国地理喜欢的原因是由于发现了中亚五国国名的共同点?打一德国名人KKK 谁有2010年“希望之星”英语风采初中组初赛试题啊?两天好,试题 求青春期的教育读后感500字 object的用法How do the americans like to be called?Most of them don't object ——them by their first names?A.that I call B.for calling C.to my calling D.to call答案选择C,咱知道object to doing可以选C但是A选项是object +that 从句, object 用法object to,object at,object against有啥区别 求 一篇关于青春期的读后感 detail与event的用法有哪些?没事干的别乱发赚分，我有急用！ 谁知道怎么准备"希望之星"英语风采大赛复赛的即兴演讲?我是山东青岛的, 鼻音爆破怎么发button,important,etc./tn/这个鼻音爆破,发不出啊发不出,纠结死了快, he is writing about an exciting thing which happened to him one day这句话为什么错? 用描述法表示,谢谢 an unusual thing happened to him last week.but a ___,he was very happy to face it 用描述法表示集合 纸槽煮水操作,比赛谁煮的快,有什么窍门能使水快点沸腾,纸槽的折法也说明一下 简要说明采用专家小组法进行预测应如何选择专家跪求! Please send the information requested and the PPAP signed whenever you have the information.上述这句话怎么翻译.PPAP是一种文件. 是中国人偷渡到国外的多,还是外国人偷渡到中国的多?