二次根式有意义时，x的取值范围是（）A．x≤B．x<C．x>D．x≥-九年级数学

更多内容推荐

• 计算的结果是（）。-八年级数学
• --I’m going to the States?--How long ________ you________ in the States?A．are; stayed B．are; staying
• 计算的结果是A．B．C．D．-八年级数学
• It is said that a new shopping street ________here next year.A．will build B．will be builtC．would bui
• 下列运算正确的是A．B．C．D．-八年级数学
• Seeing a stranger with a knife in his hand, the little girl stood under the tree, _______ out of her
• 已知．甲、乙两个同学在的条件下分别计算了和的值．甲说的值比大，乙说的值比大．请你判断他们谁的结论是正确的，并说明理由．-八年级数学
• My father used toon weekends,but now he is used toevery evening.A．go fishing; danceB．going fishing;d
• .In the near future, more advances in the robot technology _____by scientists.A．are makingB．are made
• I haven’t finished my homework yet. I my mother with the housework all day yesterday.A．helpedB．have
• It’s the second time that Iin Beijing. What great changes! It’s years since I here last time.A．went;
• 计算：(1);(2).-八年级数学
• 计算:_____________-八年级数学
• 计算（6分）：-八年级数学
• This is the first time that I ______ the song Gangnam Style.A．hearB．are hearingC．heardD．have heard-
• —We are informed that the Weifang International Kite Festival starts at 7:00.—Oh, I didn't exp
• The reason why I want to write this review is to warn future travelers on how to avoided ___________
• — Put these glasses away before they______. — OK, I’ll put them in the cupboard.A．have brokenB．are b
• ------What's the matter with Tim? ------Oh, Tim's cell phone was left in a taxi accidental
• （1）（2）-八年级数学
• ---Ifor London to attend a meeting tomorrow. The planeat 10:20 am. ---Have a good journey!A．am leavi
• 若，则的取值范围是（）A．B．C．且D．-九年级数学
• 计算（6分）：-八年级数学
• —I’m sure Mary will pass the driving test. —I think so. She for it for months.A．is preparingB．was pr
• —Ann is in hospital.—Oh,really? I ________know.I _____go and visit her.A．didn’t; am going to B．don’t
• It was the second time that I_______of the changes of the timetable .A．have been informedB．had been
• ;="_____"__-九年级数学
• 计算：--九年级数学
• 计算：=()-九年级数学
• —I’ll come to attend your speech at 9:00 tomorrow morning. —I’m sorry. By then my speech _________ a
• The teacher told me that the light ______ faster than sound.A．travelsB．had traveledC．is travelingD．t
• Chinese Premier Wen Jiabao _______an important speech on April 30,2011 in Indonesia, __________he is
• 先化简，再求值：，其中-九年级数学
• 计算：-九年级数学
• Youto ask the teacher if you want to hace a day off.A．are supposedB．supposeC．are allowedD．allow-高一英语
• Please don’t make so much noise.Ia novel.A．writesB．am writingC．wroteD．was writing-高一英语
• I’ve won a holiday for two weeks to Florida, so I _____very soon.A．am leavingB．have leftC．leaveD．wi
• ______ of danger in the street at night, she had to go home with a friend ____ her.A．Warning; follo
• 计算：（1）；（2）。-八年级数学
• 计算：（1）；（2）．-八年级数学
• 132-122+196-24-数学
• 请写出一个式子，使它与的积不含二次根式-九年级数学
• 化简：（1）27-28-613+18；（2）2bab2÷6ab2ba×(-23a3b)(a＞0，b＞0)．-数学
• 化简：＝-九年级数学
• 当时，二次根式有意义-九年级数学
• 已知实数在数轴上的位置如图所示，试化简。(5分)-八年级数学
• 化简与计算：(每小题4分,共12分)①②③-八年级数学
• The novels written by the author sell best, but five years ago no one could have imagined how great
• Neither of the young men who had tried to get the job in the company ________.A．has been acceptedB．h
• George is going to talk about the geography of his country, but I’d rather he_______ more on its cul