判断函数y=X+2/X在(0，+∞)上的单调性

改错：Little Feifei often has fun to learn English in her spare time. 万和汇丰投资15套4万8千元真的能赚到4000万吗 汇丰手机怎么样 get out of 和get off 用法区别,为什么做英语选择题用get out of taxi get off bus what is mean?请问可以这么用吗 英语作文：1.John's new look 2.My favorite food 3.The people on the beach 4.My job 5.My new pen pal加汉语，多给40——50分 look where you are going请问look后能加句子吗? do eye exercise什么意思 The children ate _____the cake. he took a cake and ate it quicklywe enjoyed ourselves last night变一般疑问句 The driver got out of the car and began shouting at me.为什么这里用of能帮我详细解答一下吗 the man got into the doctor's car,and they __ off.填入‘drive’的适当形式. jack is a pen pal of------ A hers B she C her my friend,jack is in front of the me 改错the pen is on desktthe baseball is between the chair and deskthe boy is in blue is mecanyou take my book here tomorrow? What he said h________our feelings填什么,快哦······ get out of 和get off的区别? get out of ...与get...out off...的区别 what is quality product H____,the weather changes quickly . 邀请牛人来回答 ! 回答就最佳!~~~ what you said hurt me中的what you said 是什麽结构,怎样分析,请讲详细点!谢谢啦~~~急用,在线等. I was hurt by you you know? Simon was hurt( )what his wife had said.A .because B because of C insted 这题选什么 要解析. What you said was against you是什么意思.速度. Many tents were -- for people to resist the cold wind in the wildA.put out B.put up C.put on D.put aside I think you are very great.Come on ,believe yourself!you will do i will meet you down there电影里的DOWN Who will be there for you? 翻译：因为你太自信了有时候你会热闹他人. Sometimes you might___people because you are so___. pay for和charge forchoice:The owner of McDonald______me 30 dollars for the chicken and chips.A.charged B.paid 请详细说下charge for的意思及用法, in charge for/of/to 区别是什么 charge 要例子啊