瞬时速度与平均速度有什么区别？

假如中国1793年改革开放,中国的近代史将如何发展 中国的近代史变革有哪些 He said ___ the book was very interesting and ___ all the children liked to read it.为什么填that which 不是that that It's said that the book is very interesting.I know____________.……我知道不仅你有,吉姆也有一本. The book is interesting for me怎么改同义句 What _ do you want to do,Mike?A.another job B.the other job C.others' job D.other jobs What do you think of the lions?__ A.They are from South Africa B.They can eat other animalsC.They like sleepingD.They are very scary 把 Did you enjoy yourselves at the party改为同义句 Did you ___ ___ ___ ___ at the party? 寻找一个浪漫的英文名字~：）请英文达人帮帮忙~我希望这个名字能够简洁、顺口、特别~我希望她的感觉是浪漫唯美~热烈而深情的~不好意思，最不喜欢吃苹果啦，所以如果要联系名字，能 求 我与中国梦3000字论文 近代史课上的作业 boys and girls,please keep the park clean when you enjoy ( ) there Besides what ____above,cycling is also one of the best ways of traveling around town.A.is spoken B.are spoken C.is spoken of D.are spoken of选哪个..求详解 In what ways are you similar or different from your best friend?这句怎么翻译啊! Can you help me sing?病句吗 Can you help kids dance?如果是,请说明为什么 描写动作的四字词语 急 过了今天就没用啦 求求你们啦 Help Help Help!过了今天就没用啦! 谁能提供一个比较搞笑的英文名（男名）如果可以的话把姓也带着最好是可以用方言来读着搞笑的! “恶搞”的英文名是什么 辛亥革命以后,孙中山先生为何不得不把总统职位让给袁世凯? 孙中山辛亥革命成功了,为什么胜利的果实却给袁世凯夺取了? 泰坦尼克号获得11项奥斯卡奖的英语怎么讲 She (was dropping) the tray when I spoke to her.为什么前半部分过去进行时,后半部分过去时I was speaking to her不是也可以表示过去吗 It was raining hard,but no one stopped working.这句话用过去进行时要强调什么?是强调动作发生的先后顺序还是强调持续性? Do you believe in unexplained thing such as UFOs and Yetis?Why or why not?回答这个问题 打得好可加分 尽量多答 We _____do such a thing.A.should not B.must C.can D.may not I asked her whether she was enjoying her dinner 为什么用was enjoying ,是过去进行时的时态么I asked her whether she was enjoying her dinner为什么用was enjoying ,是过去进行时的时态么还是 be enjoying sth 又是一个什么 Did you _ see such a thing 鸟飞于瓶中,称其重,会大于或小于瓶? i don't know why did she do such a thing这句话的语法对吗,为什么你还没说为什么呢 英语好的进,为什么要用动名词Reading that book is very helpful.这句话的意思是读那本书有很大的帮助.这里用了动名词reading.那我就不懂了,这里为什么用动名词了,如果我说成Read that book is very helpful 杨凌乐cake蛋糕怎么样? Top cake为什么比其他蛋糕贵?