一平面简谐波沿x轴正方向传播,

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一平面简谐波沿x轴正方向传播,
阅读这个词语的用法和意思 晚上打开电灯,为什么有些地方亮,而有的地方却暗呢? Every picture except these two ____(sell). Every cless is good except Class Two 中的except是什么意思 look at these (photo),please victor(wctch)tv every day festvals are always times for great feasts with lots to eat,special and often new clothing to wear and generally lots of fun.这里的generally不是副词吗,怎么能修饰lots(名词)呢? Luckily,he was in when I called.luckily可不可以换成lucky 如何提高英语水平之听力篇(一) 怎样短时间提高英语水平?听力怎么提高 长时间的听英语听力或者对话,对自己的英语水平会有帮助吗?包括在睡觉的时候听.还有就是听什么类型的英语能够在酒店或者饭店这种交流因为我是一个比较急脾气的人,在面试的时候因为 光听英语听力能提高英语水平吗? They ( ) make a decision about the election at the meeting.A.didn't need B.needed not C.hadn't to D .didn't have to 这道题为何要选D呢? permission是可数名词吗?我想知道最准确的答案。 german怎么读尽量可以发出声音哈.谢谢大虾们拉哈.一鞠躬,二下跪,三磕头.\(≥▽≤)/~ 想提高英语水平,有什么合适的MP3听力吗?平时上下班路上听听有什么合适的吗? ''German technology''翻译成中文是什么 英语中what和how的用法?英语中what和how、that、whether的用法? 相关的详细讲解一下,本人渴望得到你们的帮助,谢谢 Ronin怎么读..最好带上音标 几个英语问题.(第47个浪人)回答、You can keep the book for two weeks(改为被动语态)As we know,everyone needs to have at l___ eight hours' sleep a day.It took him an hour to finish reading the book(同义)He ___ an hour ___ _ 第47个浪人英语到底怎么样? at weekand 和on weekend的区别 给几个速食英语单词 RT What's the Chinese ( ) pencil What letter is this?()Z 这句话是比喻还是讽刺?"你他吗是驴啊?牵着不走打着倒退~" 先不论这句话是否有攻击性!书面说这句话是比喻.还是讽刺?是比喻他是驴脾气还是讽刺他是驴? life grows boring and boring,how can I kill the time as pleasant?life grows boring and boring because in our societyeverything is fake.we fear that we are cheated bysalemen,politicians,hookers,crooks and all kindsof cheaters.we don't dare to buy thin Let him------(watch)TV now.he ----(not have)any homework today 我碰到不认识的字,可以查字典和() 谁知道巧记英语的方法 What's the Chinese for"VIP"?(同义句转换)What's "VIP" ( )( 1.He (visited his grandparents) last Spring Festival.(对划线部分提问)2.Did they go to the farm yesterday?(改为肯定句),还有英语翻译:变得很兴奋、许多人 以what do you want to do in the futher进行对话,至少要4个来回!(永远为你祈祷)稍微简单点的``适合一个高一生的1!