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關於2014B.2015的百科

等差數列{an}中,a1=2016,前n項和為Sn,若﹣=﹣2,則S2016=(  )A.2014B.2015...
  • 等差數列{an}中,a1=2016,前n項和為Sn,若﹣=﹣2,則S2016=(  )A.2014B.2015...

  • 問題詳情:等差數列{an}中,a1=2016,前n項和為Sn,若﹣=﹣2,則S2016=()A.2014B.2015C.2016D.2017【回答】C【考點】等差數列的前n項和.【分析】由題意可得公差d的方程,解得d值代入求和公式計算可得.【解答】解:設等差數列{an}的公差為d,則﹣=﹣=﹣2,所以d=﹣2,又a1=2016,故S2016=2016a1+×(﹣2)=2016,故選:C.知識點...
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已知a是方程x2+x﹣2015=0的一個根,則的值為(  )A.2014B.2015 C.      D.
.計算:2000﹣2015= 
  • .計算:2000﹣2015= 

  • 問題詳情:.計算:2000﹣2015=_________.【回答】﹣15.考點:-有理數的減法.專題:-計算題.分析:-根據有理數的減法運算進行計算即可得解.解答:-解:2000﹣2015=﹣15.故*為:﹣15.點評:-本題考查了有理數的減法,是基礎題,熟記運演算法則是解題的關鍵.知識點:有理數的加減法題型:填空題...
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﹣2015的相反數的倒數是(  )A.B.   C.2015D.﹣2015
  • ﹣2015的相反數的倒數是(  )A.B.   C.2015D.﹣2015

  • 問題詳情:﹣2015的相反數的倒數是()A.B.   C.2015D.﹣2015【回答】 B【考點】倒數;相反數.【分析】先求得﹣2015的相反數,然後再求得其相反數的倒數即可.【解答】解:∵﹣2015的相反數是2015,2015的倒數是,∴﹣2015的相反數的倒數是.故選:B.【點評】本題主要考查的是倒數、相反數的定義,掌握倒數和...
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﹣2015的倒數是(    )A.2015B.﹣2015    C.﹣  D.
  • ﹣2015的倒數是(    )A.2015B.﹣2015    C.﹣  D.

  • 問題詳情:﹣2015的倒數是(    )A.2015B.﹣2015    C.﹣  D.【回答】C【考點】倒數.【分析】根據倒數定義可知,﹣2015的倒數是﹣.【解答】解:﹣2015的倒數是﹣.故選:C.【點評】主要考查倒數的定義,要求熟練掌握.需要注意的是:倒數的*質:負數的倒數還是負數,正數的倒數是正數,0沒有倒數.倒數的定義...
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|-2015|等於(   )A.2015         B.-2015        C.±2015    ...
BeijingtookitsthirdCBAtitle    March22nd,2015.A.at     ...
2015,thetimehascomeformorecreativeChinatourstobemade,Sh...
  • 2015,thetimehascomeformorecreativeChinatourstobemade,Sh...

  • 問題詳情:2015,thetimehascomeformorecreativeChinatourstobemade,ShanghaiDisneyopens,morehigh-speedrailoptions.Insistingonhigh-qualityservices,weareproudtopresentoureverbest-sellingChinatourpackages,tourthemesandthenextpopulardestinations.Checkouttheopti...
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﹣2014的絕對值是(  ) A.﹣2014B.2014C.D.﹣
(2015·陝西)
  • (2015·陝西)

  • 問題詳情:(2015·陝西)____________thedelayedflightwilltakeoffdependsmuchontheweather.A.Why                                                        B.WhenC.That                    ...
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(2015·濱州)Everyonegetsangry.Manythingsmaymakeyouangry.Ma...
  • (2015·濱州)Everyonegetsangry.Manythingsmaymakeyouangry.Ma...

  • 問題詳情:(2015·濱州)Everyonegetsangry.Manythingsmaymakeyouangry.Maybeyourteachergaveyoutoomuchhomework.Ormaybeafriendborrowedyourfavoritevideogameandthenbrokeit.Youmaygetangrywhensomethingdoesn'tgoyourway.Maybeyougetmadatyourselfwhenyourteamlosesani...
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(+2)2015×(﹣2)2014=    .
已知拋物線y=x2﹣x﹣1與x軸的一個交點為(m,0),則代數式m2﹣m+2016的值為(  )A.2014B...
(2015•宜賓)Look!Therearesomebirds
  • (2015•宜賓)Look!Therearesomebirds

  • 問題詳情:(2015•宜賓)Look!Therearesomebirds_______inthesky.Theyareverybeautiful.A、tofly           B、fly          C、flying            D、flown【回答】C知識點:動詞和動詞短語題型:選擇題...
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InternationalWeatherForecast(January18th,2015)ParisWeat...
  • InternationalWeatherForecast(January18th,2015)ParisWeat...

  • 問題詳情:InternationalWeatherForecast(January18th,2015)ParisWeatherl       Today:Plentyofsunshine.High59F.WindsNEat5to10mph.l       Tonight:Generallyclear.Lownear35F.Windslightandvariable.l       Tomorrow:Amainlysunnysky.High59F.W...
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(-1)2015+(-18)×|-|-4+(-2)
2015的相反數是   (   )A.2015           B.-2015    C.        ...
實數-2015的絕對值是(  )  A. 2015  B.-2015    C.±2015     D.
﹣2015的倒數是(  ) A.﹣B. C.﹣2015D.2015 
-2015的絕對值是A.-2015            B.2015                C.  ...
﹣2015的絕對值是 
  • ﹣2015的絕對值是 

  • 問題詳情:﹣2015的絕對值是【回答】2015.知識點:各地會考題型:填空題...
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-2015的絕對值是(    ).A.2015   B.-2015    C.   D.
計算:2015×2017-20162=
  • 計算:2015×2017-20162=

  • 問題詳情:計算:2015×2017-20162=__________.【回答】-1 知識點:乘法公式題型:填空題...
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(2015·陝西)Towarmhimself,thesailorsatinfrontofthefirerubb...
  • (2015·陝西)Towarmhimself,thesailorsatinfrontofthefirerubb...

  • 問題詳情:(2015·陝西)Towarmhimself,thesailorsatinfrontofthefirerubbingonebarefootagainst          .A.another                                                    B.theotherC.other        ...
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(2015•*蘇)Thenumberofsmokers,
  • (2015•*蘇)Thenumberofsmokers,

  • 問題詳情:(2015•*蘇)Thenumberofsmokers,___________isreported,hasdroppedby17percentinjustoneyear.A.it                                                            B.whichC.what          ...
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