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铜和金的重量计算:金铜合金,一共20g,纯金占20%,请问纯金在合金里的重量是多少g? do you know Tom has passed the final examat last? yes, I felt when I heard the news.A exciting ,excited B excited,exciting C exciting, exciting Dexcited,excited 古诗【忆梅】赞美梅花什么品质? 忆梅这首诗分别赞美梅花怎样的品格 山园小梅赞美梅花的什么品格 山园小梅赞美了梅花的哪些品格? 大部分的树叶长出来时是绿色的,秋天变黄、变红了,而有的树叶长出来时是红色的,后来变绿了,这是为什么 牛津英汉字典收录了多少单词?RT 大学英语四级词汇在牛津英汉字典里是从那一页开始? 请达人帮帮忙,给我个能装在KINDEL3里面的牛津英汉字典.TXT格式的.我实在不想装多看了.只要不装多看,在KINDEL里能用的就行.什么格式都成.帮助我的人们今年都发大财啊.惭愧啊,一着急把单词打 翻译：helped someone you didn't know? 求翻译!no wonder you didn't make it to the competition 英语翻译我只知道i was lost是我迷路了的意思.可以说 i was very lost.or i was a little lost. didn't you know?的回答, 翻译 I didn't know anyone there,so I talked to no one. —Do you know the girl between________?—Yes,she's my pen pal from England.A.he and me B.him and I C.him and me D.he and I 赞美梅花品格的诗和其中描写了梅花怎样的品格 有没有赞美梅花品格的诗分别赞美梅花什么 黄光制程为什么使用黄色的光? I-----still------read a magazine at 10：00 last night. I didn't know the matter until you told me转化为强调句 i didn't know about it until he told me .主句谓语为何不用过去完成时态 同义句1.I didn't know anything until he told me.I knew______ _____he told me.2.Before watching the documentary,I took a shower.I______watch the documentary_____I took a shower.3.Don't leave before the teacher comes back._____ ____ ____the teachers we never told him he couldn't ,so he didn't know.he just left it 蒜黄为什么是黄色?请不要误导! 在线等~~ 蒜黄为什么是黄色的 为什么蒜黄是黄色的 而蒜苗是绿色的 蒜苗是黄色的什么原因? 蒜黄为什么是黄色的?那营养储存在哪 晏子使楚,人琴俱亡,小石潭记,记承天寺夜游,治水必躬亲中的通假字最好在今天上午以内,急用! 英语翻译如题 制作一个变色的旋转陀螺：陀螺的上表面可以分成三个相等的扇形区,分别涂上红、黄、蓝三种颜料：陀螺的上表面也可以分成六个扇形区,按106度、53度、55度、61度、61度、24度分别涂上红、