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水中两岸景物的倒影是什么原理是平面镜成像吗？ 水中的倒影的原理是不是光直线传播的原理（快~） 水中为什么会出现倒影 如何从英语5 60分升到90 100 Tom's mother looks woried对worried提问,---- ---- does Tom's mother look. 回答问题. Where is Tom from? Where does he live? What's mother's hobby?What does the family eat for breakfast?Does Tom have a little brother?What do Tom and l like? Tom's mother does morning exercises every morning.（改为一般疑问句） Tom lives in Beijing with his mother.（对划线部分提问） does Tom in Beijing?（划线部分是his mother） 小刚用2元钱买了5支铅笔和8块橡皮,余下的钱买一块橡皮就多出2分,买一枝铅笔就缺4分,每支铅笔多少元? 有阳光真好 作文 或太阳照在我肩上 作文 （陌生人的关心/帮助） 或关于别人帮助自己的作文☆（题材不要太老套） 600字作文 有阳光真好 How does your sister come to school every day? Does your sister wants to go to school with me?.错在哪 A:Does your sister go to school by bike?B:B应该怎么说? Does your sister teach in a middle school,Does your sister teach in a middle school,Peter?的同义句 为什么水面出现景物的倒影是光的反射而不是影子 She was listening to _the__radio.为什么用the? My sister was reading a book while she was listening to the radio能不能用when 代替 while 陈涉世家古今异义 借第令毋斩{古今异义 句型转换:she is listening to the radio.否定句：一般疑问句：肯定回答：否定回答: ___she was listening to the radio,she fell asleep.这里填when还是while,他们俩能不能互换 爷爷、奶奶、爸爸、妈妈、姐姐和我一共包了54个饺子,姐姐比我们平均每人少包2个,姐姐包了几个饺子 he was often heard ()in the next room.A.to sing B.sing为什么选A.求讲解 She often hears someone --------songs in the room.A.to sing B.singing C.sing D.sang He is often heard -----in the next room.A sing B to sing C singing Dsang可我觉得是B啊! 课文《陈涉世家》中的古今同型异义次有哪些,古今翻译都要有哦 The girl ------to sing the song in the next room A.often practises b.is used C.is often heardD.looks forward 《陈涉世家》中“少”古今异义 大地的修饰语有哪些 求一篇《中国民间艺术剪纸》的论文大概在2000字左右 民间艺术作文600字(剪纸） 除了剪纸,中国还有哪些民间艺术