乙醇与乙酸生成

thank 求下面图中阴影部分面积 太阳光线中白光实际上包含了红、橙、黄、绿、青、蓝、紫等七色光,其中_色光的色温最低太阳光线中的白光包含了红、橙、黄、绿、青、蓝、紫等七色光,其中 _ 色光色温最高 It's dark ,but the man can't find a rooma living b to live c living in d to live in 单词填空 1.It's()in this room,so I can't find my pen.2.John will come back().3.Bill is walking()his school.4.Mary was ()in the park yesterday.towards ,dark ,soon ,lost ------Do you often hear John ___in his room?----Listen,now we can hear him ____in his room .%Dª singing,singingB sing,singingC to sing,singing 不同色光的影子颜色相同吗? (家里有个黄色的灯,影子在白纸上是蓝色的) I often hear John (sing/singing/to sing)in his room.为什么这里要填sing I con't find the recorder in the room.It may have been taken by somebody找不到录音机,它可能是被人拿走了.为什么不用had been taken呢,taken不是发生在find过去了吗,是不是要用found才可以用过去完成被动语态啊 This photo of your mother is very much like her.不是喜欢吧,前面有给is 人称代词填空 this photo of your mother is very much like her.I like( ) Our English teachers aren't at school. They( )at home 中间添什么 ( )的夜空挂着月亮? 什么似的月亮挂在什么的夜空 什么似的月亮.怎么样的挂在夜空中————似的月亮,——————挂在夜空中 年终总结怎么写 年终总结怎么写啊 On Teachers’ Day ,we all went back to our old school______ to see our teachers.A especially B specially选那个呢?A和B又有什么区别? 最好简便 怎么简便. 天上的星星要怎么确定它的位置还有:赤经174229.赤纬28°5918赤经03h 46m 58.8s.赤纬+24°06′53〃赤经00h 42m 42.9s.赤纬+41°15′58〃这些要怎样表示星星在图纸上的位置 他正要睡觉,电话铃响了 用英语怎么说 He ( ) ( ) ( ),when the telephone rang . 年终总结怎么写 he was just falling ( )when the telephone rang 怎么写年终总结 He was writing an important report when the telephone rang,可不可以改成...when he was writing an important report ,the telephone rang.可以改成这样吗.还有 while 的句型.搞不懂哪个后面要接过去进行时.那是可以还是不 宇宙上黑洞的来源是? 京杭大运河怎么形容 My uncle wants to watch Beijing Opera(改否定句） 怎样形容京杭大运河 求过程求大神最好是手写的要有验证快! 关于宇宙起源现有几种假设?