若实数xy满足方程x平方+y平方-4x+1=0则y比上x+1的最大最小值

beverage怎么读 beverage的用法它的含义是饮料 和drink相同的含义 可是二者有何区别 在用法上何时加s 何时用单数 例如 cock is a kind of beverage .为什么不是beverages 呢 the floor above the ground floor is the first floor.为什么不用over而用above?over是垂直的上方（正上方）,above 不一定在正上方,两层楼的话,一层不是在另一层的正上方吗 this sunday前要不要介词? this afternoon前用什么介词还有next week和three years前加什么介词 this afternoon 前面要加介词in吗? 找高中英语剧本.大概15分钟.内容健康! 8人英语剧本,大约15分钟左右! 求高中话剧剧本~15分钟、10人左右的要团结有兄弟般感情!~!~高手!谢了!尽快!~!尽快!~!尽快!~!尽快!~!尽快!~!急! 求高中英语课本剧剧本有那个好心的朋友推荐一个剧本正剧或悲剧哦 put I just want you konw, 翻译:although he is not very familiar to me,the poem that the writer presents amazes me. 我需要一个高中英语剧本我们社团要用.难度适中...大概在3min到5min 之间...把完整的剧本发上来...要内容有趣..搞笑的. 英语翻译还望赐教~ twice等于two times 为什么用two times 来做题是错的?还有“两次或三次”用英语怎么说? 大概4分钟左右的,人数10~13人,少一点多一点也没太大关系,内容要有关校园的,或者青春之类的都可以, 急求高中英语剧剧本急求一篇搞笑的英语剧剧本,时间在15分钟以内不求多,只求经典适合高中的,不要太难我不想说你了，这种英语剧在高中演拿得出手吗？小学水平而已 hello ,pretty ,I 'm a guy who always would like to learn eglish,would you make a friend with me The parker bought a new house but___ will need a lot of work before they can move in.A.they B.one C.it D.which The Smiths bought a new house but （） will need a lot of work before they can live in it.A it B they（我不明白是史密夫一家人需要工作,还是房子需要工作（被动））的 求the house still needed a lot of work ,but ___ thekitchen was finished的答案和翻译A instead B altogether C at once D at least We hoped to be able to move into our new house at the end of the month,but things did not work ___A.for B.out C.in D.on something if you are not allowed you must you must you must麻烦各位大虾翻译下, 连词成句 her,must,her,and,you,go,something,help,when,worries must do sth 还是 must to do sth You must learn to face the _____ when you face something _____.danger dangerdanger dangerousdangerous dangerousdangerous danger You must try to be calm可以说You must try calm吗 I have no idea what _____when I was asleep.A is happening B did happen C happened D was happened We don't know when the accident________.A.has happened B.happened C.happening D.to happen What( ) when you lost the library book?A did happen B is happening C happened D was happening.选哪一个 为什么选那一个 这句话应该怎么翻译 谁知道Both Of You,Dance Like You Want To