氮气在生活中的用途

Who/What are these?的回答These are..也能说是对的吗?单数的时是用This/That is...和It is ..都可以吗回答有什么要注意的,什么时候用This is... It is...还是两者可以互用的,求个明白解释 英语翻译blows my mindfalling downI’ve ever knownTime’ll kiss the world goodbyeA dying screammakes no sound拒绝机译! How much are these books?(同义句） （ ）（ ）（ ）（ ）these books?根据格式填 how much are you English books?(改为同义句） How much are your English books?怎么改成同义句?How much are your English books?(改为同义句) ____ _____ the _____ _____your English books? They e their school life very much 英语翻译求翻译成英语京剧脸谱（Peking Opera facial makeup）是具有民族特色的一种特殊的化妆方法.由于每个历史人物或某一种类型的人物都有一种大概的类型,就像唱歌、奏乐都要按照乐谱（mus “京剧已有200多年的历史,是中国的国剧”这样翻译行不行“Peking Opera who is the national opera of China has more than 200 years history” peking 英语提问+回答Dear Jack,I had a very unusual experience on Sunday.At around ten o'clock in the morning.I was walking down the street when a UFO landed right in front of me.You can imagine how strange it was!An alien got out and walked down Cente 沪江开心词场拼写问题为什么还是错了? 沪江的开心词场怎么样?好不好用? 外教用英语怎么说?1 请问在大学里遇到外教怎么打招呼?是喊Good morning,sir吗,还是喊别的什么?外教用英语怎么说啊?外教用英语怎么说啊！ 英语,动词变名词的规律,如什么时候用er什么时候用er等越具体越好 英语名词变单三的规则①直接加s②O、sh、ch、th、x、s结尾加es③辅音加y结尾 y变i加es④f、fe结尾 f、fe变ves第五条是什么?以O结尾，有生命加什么，无生命加什么 我经常饶有兴趣的和朋友们在阳台上聊天 用英语怎么说 How much are these socks?改为同义句 How much are these tomatoes?的同义句 How much are these coats?同义句How much are these coats?(改写为同义句） 不用了我们这个外教就很好 英语怎么说 How much are these shoes?的同义句 谢谢急用 50亿年后太阳会变什么样?从红巨星变白矮星?复制的朋友就请不要回答了! 50亿年后太阳是否会变成红巨星? 太阳大约50亿年后将变成红巨星,最终它的核心收缩,变成（）（） 请问太阳在50亿年后成为白矮星还是红巨星? 关于机器人的作文咋写 “幸福"在英语中,动词和名词分别怎么写 写明哪个个动词哪个名词 建造 英文动词和名词分别是什么? 写一篇关于机器人的作文,好处：你有更多空闲时间从事自己的爱好,可以帮助你做家务,如洗衣服、做饭、打扫卫生.坏处：若感染病毒（catch a virus),会有许多麻烦：可能会把早饭放进洗衣机（ They like their chinese teacher?改成个一般疑问句I (go to school）at seven o "clock every day 对打括号提问the students get up (at 6；30)every morningthey go swimming (after school) 首字母填空 They have a c_____ with their English teacher