sin^2t定积分多少

A cold wind began to blow and he ___ his collar to keep out the cold.A.turned up B.turned off C.turned over D.turned downWHY 英语中的单复数怎样区分,怎样使用?需要详解 牛津高阶英汉双解词典第7版怎么使用 blow and blow 的中文意思 black and cop and blow befor long shortly after如何区别? 表示我到了,用英文中get to ,arrive,reach中的哪一个? long after的词义就是LONG AFTER ,后面接一从句 It ( ) ( ) ( ) if our hotel was near the ocean.如果我们的旅馆在大海附近,那该多好. 苦难造就人才的小故事 牛津高阶英汉双解词典第7版,定价是多少啊? ____(disappoint) at the results,she didn't say a word.用括号中词的适当形式填空请告知为什么 We feel air on our faces (when the wind blows)(对括号部分提问） — — we feel air on our faces为什么?能用when shall 么 求everything at once 英文与中文对照简介谢谢 are 的用法是什么?单数名词和复数名词是什么? 各种Other的用法（跟名词复数或单数）各种Other,例如the other、any other、others、another等等.只需要后面加n.单数或复数,加adj.或其他词eg:【another】①another＋n.单数②another＋量词＋n.复数如果回答 帮忙!化学题,THX1 元素X的原子核外电子数等于核内中子数,取该元素单质2.8克与氧气充分反应可得6克化合物XO2,则该元素是?2 元素A的原子核内质子数和中子数相等,最高价氧化物的化学式为A2O5, 加特曼亚当斯反应,加特曼醛合成法都是什么啊,最好能讲讲机理,好的追分 把9克KNO3完全溶於21克水中,且均分为三份,计算:(1)取一份,其中溶质质量分数是多少?(2) 取一份,使其溶质质量分数增大一倍,需加入KNO3多少克?(3)取一份,欲使其溶质质量分数减少一半,需加水多少 我能接你一本书吗?用英语怎么回答 sorry ,i do not have __ Do you have a dictionary called tourist english?sorry,we don't have there was a beautiful castle in the city,but now it has disappeared.如何改同意句.there— — —a beautiful castle in the city THE BEAUTIFUL MISCELLANEOUS怎么样 The flowers __________ beautiful. 一首音乐和everything at once很像叫什么? it trains less often in Beijing than Shanghai.这个话怎么理解? 英语翻译歌手：Alison Krauss you are filled with wonder and your dreams true这句话怎么翻译?wonder后面应该接at还是and?怎么翻译? The sudden approval. disappeared中文翻译是什么 My heart is with you 用中文怎么读（注：不是翻译意思） You can go there on ___ that you dont come back late for supper .A.accountB.conditionC.considerationD.obserlation