1、质量为半径为的均质圆柱体放在粗糙水平面上。柱的外面绕有轻绳,绳子跨过一个很轻的滑轮,并悬挂一质量

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1、质量为半径为的均质圆柱体放在粗糙水平面上。柱的外面绕有轻绳,绳子跨过一个很轻的滑轮,并悬挂一质量
hand and hand和hand in hand的区别 uncle的对应词 we are learning___(read)this word _____is Li Lei from?A.What B.Where C.How英语 The backpack (on the chair) is Li Lei's?对括号里的提问.我觉着应用where.但答案是which,怎么回事?到底什么时候用where什么时候用which?The boy ( under the tree) is Li Lei.对括号里的提问.(Which)(boy)is Li Lei?Her b a member of your family you like most 怎么翻译啊? Autumn harvest is to start这个句子对不对? The harvest is in Autumn. 这个句子是什么句式?According to the recent survey,four millon people die of diseased linked to smoking.die of diseased linked to smoking,我觉得应该说die of diseased which linked to smoking 怎么没有which呢? Would you like to have a piano lesson?A Sure,I’d like B No, I have no time C Yes, please D. Certainly,I’d love to i enjoy staying with you. andy是什么意思? winter comes from autumn这句话中两个季节前不加任何冠词对吗winter comes from autumn这句话中两个季节前不加任何冠词对吗 如果加是a or the 请按第一句句式填空, 句式填空:愿君多采撷这是什么句 完成句型填空1.你的卧室脏了.Your bedroom is not ___.Would you please ___ it?2.这是我的全家福,你会看到一个漂亮的女孩,就是我.This is ___ ___ ___ my family,you'll see a beautiful girl,it's me.3.Nancy在哪里?--她和朋 句型填空she doesn't want to drink milk now.she doesn't ____ ______ _____milk now. 怎样查含有某些字母组合的单词?比如 含有oid的所有单词不想下载软件 be on the tip of my tongue 把自己的用所给词的适当形式填空 May the 12th is (nurse) Day may in may day is 这些单词连成一句话,最后是句号 all the members thought that the plan should be changed,but he still ___his own ideaA insist on B insist Cstick to D kept 理由帮我说一下,答案是第三个 It _____ that John was ______ than any other student in his class.A.believe; less bright B.was believed; less bright C.believed; more bright D.was believed; more brighter为什么选B 怎么翻译呢其他选项错哪里了吗 反义疑问句:He has few We can --- the road when we see the green man.A across B throught C cross D pass选那个?为什么? we can cross the road when we see the green man(否定句)we———— ————cross the road when we see the green man.两个空格,是can not还是must not,可它们一般都是合写的,是don’t eat or drink还是and? Which month can't you find abore/ 的中文意思 I would like to (climb mountains)对括号部分提问 哪个月份你不能在上面找到(WHICH MONTH YOU CAN'T FIND ABOVE?)IT'S. would you like to go_____(climb) Though difficult,I---------him find a job ,which made him very pleasedA tried to helpB managed to heloC tried helpingD succeeded to help为什么不可以选A 说明下, Would you like to clinm mountains with me thid Sunday?I’d love to.But I play table tennis between Class 3 and our class.A.am B.am going to C.am D.going to