要使二次根式有意义，则必须满足的条件是（）A．≥１B．＞－１C．≥－１D．＞１-九年级数学

更多内容推荐

• The new dictionaries are very useful. They _______ well and _______ already. A．sell; have been sold
• With more forests being destroyed in that area, huge quantities of land _______ deserts each year.A．
• --Mom, can we move into our new house this weekend? ---No, it _________.A．is paintedB．is paintingC．w
• —Could you tell me how your father usually goes to work?—Yes. If it is fine, he ________ to his offi
• I called Hannah many times yesterday evening, but I couldn't get through. Her brother ______ on
• Mary is absent from school today because he __ a cold.A．catchesB．had caughtC．has caughtD．will catch-
• Traffic conditions in Beijing ________ for decades. At first people only complained about jams durin
• Had it been possible, I would have gone to attend Monica in the hospital, but Ifully occupied last m
• 若，则。-九年级数学
• What shall human beings do if oilsometime in the future?A．will run outB．runs out of C．runs outD．will
• The girl told me that she ＿＿＿ beaten and she＿＿＿telephone the police. A．was; wouldB．has been; willC．h
• Our food supply _____. We’d better get some in case there’s ____ left.A．is running out, noneB．has ru
• Had you taken the doctor’s advice yesterday, you ____ all right now.A．areB．wereC．would beD．would hav
• China _______ rapid progress in space technology in the last 10 years.A．madeB．has madeC．had madeD．we
• （本题满分8分）先将化简，然后选取一个你喜欢的a的值，代入求值．-九年级数学
• 已知+5的小数部分为A，11-的小数部分为B，求（1）A+B的值；（2）A-B的值。-八年级数学
• 计算：。-八年级数学
• 若m是的小数部分，则m的值是.-八年级数学
• ．-----Tommy is planning to buy a car.----I know .By next month, he______ enough for a used one.A． sa
• Either the ways or the time ____ yet, but you may ask the headmaster for some information．A．isn’t de
• Since last year I____ him only once.A． have seenB．have been seeingC．seeD．was seeing-英语
• ---Did you ask Sophia for help?---I ______ need to – I managed perfectly well on my own.A．wouldn’tB．
• The headmaster ________for more than two weeks.A．has leftB．has goneC．has been awayD．has come back-高三
• I _____ all the cooking for my family, but recently I’ve been too busy to do it.A．will doB．am doingC
• Don’t call me tomorrow evening, for I ____________to a lecture on how to keep a good state of mind w
• （2011年青海，2,4分）分解因式：－x3＋2x2－x=;计算：=.-八年级数学
• 当x=时，二次根式取最小值，其最小值为。-九年级数学
• 计算（1）（2）（精确到0.01）-八年级数学
• 计算.（25′）（1）（2）（3）-九年级数学
• 的最小值为-九年级数学
• 已知实数x，y满足，则3x2-2y2+3x-3y-2012=-九年级数学
• .Mr Smith was __________to hear the _______news that he won the first prize.A．astonishing ,astonishe
• --- How many concerts ____ up to now?--- About 25. Last night we ____ our biggest one.A．did you play
• 计算：()0+()-1--|-1|-八年级数学
• 附加题．（1）计算：55+25=______；（2）已知方程：x2-1=0，则x=______．-数学
• --When _________ the training course begin?--Next Monday.A．hasB．is going toC．doesD．did-高一英语
• 的平方根=________。-八年级数学
• Huge quantities of fresh water ______there since the serious drought in the southern parts of ChinaA
• AC Milan has confirmed that the England star David Beckham ______the team soon.A．has rejoinedB．was g
• The vegetables we ate for lunch ________ very good. They had been overcooked.A．weren’t tastingB．were
• My friend has returned from the UK. She ______ at Oxford for four years, during which we communicate
• The London 2012 Olympic Games marks the third time that London ______ the right to host the modern O
• I called him many times, but I didn’t get through, maybe his mum _on the phone all the time．A．talked
• =_________.-八年级数学
• （本题4分)计算:-九年级数学
• You’ll _______ the department until the end of the year. Next year you will be rearranged.A．be attac
• I can guess you___________ your sweater inside out.A．had wornB．woreC．are wearingD．were wearing-英语
• （本题7分）已知实数x、y满足，求6x-y的平方根-八年级数学
• 已知,化简的结果是（）A、B、C、D、-八年级数学
• 35. Many people agree that never in historya more splendid opening ceremony than that of the Beijing