小学生三年级奥数

用need提问时,否定回答可以用needn"t,可以用don"t have 用need提问时,否定回答可以用needn"t,可以用don"t have don't need You don't need to know 可不可以转化成 You needn't know 若可以,怎么会一个 do not need 一个need not?= =是的吾杯具了.没看仔细 7年级数学书上册p103, --- Can I join you?--- Sure,we are talking about _______.( )8.--- Can I join you?--- Sure,we are talking about _______.(2011武汉)A.when shall we go to the movie B.how can we go there C.who should we go with D.why we like the movie 为什么选D而 Shall we____the meeting?Sure.Let's____ them.A.join in,join inB.join,joinC.join,join in D.join,join we are talking about if we can let Wei Hua()the School Reading Club.A.join B.join inC.take part inD.take part 高一 化学 元素的活泼性比较 请详细解答,谢谢! (28 11:8:16)下列说法错误的是 （）A氧原子的半径比氢原子小B氯原子的最外层电子数比硫原子多C金属钠投入氯化镁溶液中,未见金属镁析出,说 描写风,雨的诗是诗,不是诗句 请找一篇描写云的文章 once upon a time,a very old man tried(to move)the mountains,and his dream(came)true at last.请解释括号里为什么这么填? Most people enjou watching other people play/playing games. can/you/think/what/his/job?what/is/mean?do/you/know?be/quick与它同义的英语句/THANK/YOU! 《珍珠鸟》是一篇什么散文? HE WISHED HIS GRANDSON TO BE PATIENT AND WORKED HARD ALL HIS LIFE LIK HIMSELFTO BE 是什么用法 为什么要用TO BEALL HIS LIFE怎么解释 When did China Win the Bid of 2008 Summer Olympics?中国是于2001年几月几日获得了2008年夏季奥运会的主办权? Never in his life has he heard such a thing求正确翻译 还有为什么要倒装 he worked hard in his youth lest__in his old age.A.would suffer B.suffered C.should suffer D were to suffer为什么答案是C不是D?be to do 是什么? He ______ as though he had never in his life seen me before.1.went past me 2.avoided me 3.ignored me 4.went away from me I usually play computer games on Sunday.对 play cI usually play computer games on Sunday.对 play computer games 进行提问 What is ___important is that it is the time people share happiness with one another.much very more most 以地球人的身份向外星人介绍地球的作文怎么写? we know "it's what inside that counts"翻译成中文 英语口语家教要教什么 all I request of you is that you ___there ahead of timeA are B will be C were D be求详解 _____are that we will fulfill the task ahead of schedule.请问 是用chances 还是用possibilities i worked very hard in this s____.i think i could do b_____ than last year After ten years f hard work ,his dream ____.为什么填was come true 而不是came true 仿造春之色为冷的绿,如碧波,如嫩竹,贮满希望之情;造句 仿“春之色为冷的绿,如碧波,如嫩竹,贮满希望之情.”写一写夏和冬 You've s( ) to get to school early every day I think I'll do b( )in my studies this year than last After years of hard work,she_____achieved her dream.(final) i am happy to be closer to my dream after a few years' hard work