(-1)+2+(-3)+4...+(-2009)+2010+(-2011)+2012-2013=?

含歌而笑2022-10-04 11:39:541条回答

(-1)+2+(-3)+4...+(-2009)+2010+(-2011)+2012-2013=?
有网友回答过,说是-1007,但是也有人说是1007,不懂了,火速啊.

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wang_luck 共回答了17个问题 | 采纳率82.4%
原式=(-1+2)+(-3+4).+(-2011+2012)-2013
=2012/2x1-2013
=-1007
1年前

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偶妖精 共回答了21个问题 | 采纳率90.5%
=2013^2012*(-4)+2013^2012-2013^2012*3
=2013^2012*(-4)+2013^2012*(1-3)
=2013^2012*(-4-2)
2012-2013 year:Rates are listed per semester (for the Fall a
2012-2013 year:Rates are listed per semester (for the Fall and Spring).一学期是多久
2012-2013 year:Rates are listed per semester (for the Fall and Spring).Two-bedroom (per person):$4,700-$5,200 是秋季学期+春季学期 6个月(u.s.a)每人$4,700-$5,200?
doersking1年前1
dafendy 共回答了19个问题 | 采纳率89.5%
是秋季学期+春季学期,就是上学期 下学期的意思,一般学校开学是在9分月,也就是秋季,另一个开学在3月,也就是春季.
2012-2013 a course to remember 求英文作文,110字 还有
2012-2013 a course to remember 求英文作文,110字 还有
大致意思是《一个值得纪念的一年》
就是在这一年里发生过什么事 有什么感想。
求110字左右作文啊~
sdaniracoca1年前1
tanyu521 共回答了18个问题 | 采纳率83.3%
我只知道这个题目的意思是2012-2012一个课程要记住.
行知实验中学2012-2013学年高二上学期六校联考模拟卷
icy81年前1
山脚下的小溪 共回答了12个问题 | 采纳率100%
一般这种试卷学校是不会外传的,只有你上家教老师那儿说不定会有!
2012-2013七年级上英语期末检测卷
流水liushui1年前1
短暂如爱 共回答了13个问题 | 采纳率100%
1 2012-2013 学年七年级英语上学期期末考试试题 姓名 ———— 一、 单项选择:(每小题 1 分,共 15 分) ( )1. English is useful subject, and I do my English exercises( 练习 ) for hour every day. A. a; an B. an a C. a; / D./ an ( )2. ---Is ______ your uncle? --- No, ______ my father. A. him; he B. his; he's C. he's; his D. he; he's ( )3. Please call me ______63002371 ______ Monday morning. A. at, for B. at, on C. with, in D. on, of ( )4. My little sister Berry is ______ years old. Today is her ______ birthday. A. nine, nineth B. ninth, ninth C. nine, ninth D. ninth, nine ( )5. I like math __ ____ I don’t like math exams( 考试 ). A. and B. but C. or D. so ( )6. I like _____ and ___ . A. tomatoes , strawberrys B. tomatoes, strawberries C. tomatos, strawberries D. tomatos, strawberrys ( )7.. --- Let’s ____ ice -cream . ----- I don’t like ______, A have, it B. to have , them C. to eat ,it D. eat, them ( )8. Their mother _______apples very much. A. doesn’t like eat B. don’t like eating C. like eating D. likes eating ( )9. ____ Lucy your friend ? ___ she like bananas ? A . Is , Is B. Does, Does C . Is ,Does D. Does , Is ( )10. The socks are ____ sale $ 2.5 . A. on for B. at; for C. on; at D. in at ( )11. What _____ Tom like _____ for lunch ? A. does ,eat B. is , eat C. does ,to eat D. is to eat ( )12. Jack is a ____ boy . He eats _____. A. good, good B. well, well C. good , well D. well, good ( )13. Thank you for . A. your help B. you helping C. helping me D. A or C ( ) 14When_____ you have a speech contest( 竞赛 )? --- Sorry, I______ know. A. are, don't B. do,aren't C. are,aren't D. do, don't ( )15. ---When ____your birthday? ---_________December 2nd. . A.is, lt's B.is, lt on C.are, They're D. does, O n 二、词汇 : 根据首字母和汉语提示填空:(每小题 1 分,共 10 分) 1.There are four ( 周 ) in a month. 2. She likes__________ (蔬菜) and fruit for breakfast. 3 We have many c lothes at very good p . 4The socks are two (美元). 5 Thursday is the f day of the week. 6. (来) and see for yourself. 7. The store s many school things. I often buy some from it . 8 . --- What c ____ do you like? --- I like purple. 9. --- We have an English p tomorrow evening. --- Have a good time. 10. We have an art lesson for two h every week . 三、完形填空.(每小题 1 分,共 10 分) 请根据短文内容和语法,从 A 、 B 、 C 、 D 四个选项中选出最佳答案,并把答题卡上对 应题目的答案标号涂黑. Dear Jack, Thanks for your letter asking for a pen friend. I want to be your pen friend! Now let me tell you something about my life here in Chongqing, China. I am 1 English boy. My name is Jim Gross. I’m twelve. I have a Chinese name --- Gu Qingshan. I have 2 good friends at school. They are Li Lei and Han Meimei. Han Meimei is a Chinese 3 . She is eleven. She and I 4 in the same class, 5 Li Lei is not in my class. Miss Gao is 6 English teacher. Miss Chen is our Chinese teacher. Mr. Shen is our PE (体育) teacher. He likes us. He often 7 to the movies (看电影) with us. He 2014初中期末考试题库语文数学英语物理化学 2 doe sn’t like Beijing Opera because he thinks it is 8 . But he likes comedies (喜剧) , 9 they are exciting. He also likes scary thrillers (恐怖片) . I think our teachers are all good, so we 10 them very much. Please write soon! Best wishes! Yours Jim () 1. A. an B. a C. the D. / () 2. A. one B. two C. three D. four () 3. A. boy B. brother C. sister D. girl () 4. A. am B. is C. are D. do () 5. A. and B. but C. or D. for () 6. A. us B. our C. we D. their () 7. A. plays B. sees C. goes D. likes () 8. A. boring B. exciting C. interesting D. funny () 9. A. but B. why C. then D. because () 10. A. love B. have C. help D. play 四、 阅读理解.(每小题 2 分,共 40 分) 请阅读下列材料,并根据文章内容从 A 、 B 、 C 、 D 四个选项中选出最佳答案,并把答 题卡上对应题目的答案标号涂黑. A How does Emily spend a week? Monday Practice playing volleyball 3:00 p.m. -5:00p.m. Tuesday Go to see Mike in Children’s Hospital( 医院 ) 8:30p.m. — 10:30p.m. Wednesday Part-time job( 兼职工作 ) 1:00p.m.-5:00p.m. Thursday Go to the station( 车站 ) to meet her uncle Scott 9:00a.m. Friday See Mr. Green 10:30a.m. — 11:30a.m. Part-time job 2:00p.m. — 6:00p.m. Saturday A birthday party for Kate 7:00p.m. — 10:00p.m. Sunday Help Tony with his math () 1. Where does Emily meet Scott? A. At Tony’s house. B. At Emily’s house. C. At the station. D. In the hospital () 2. How many hours a week does Emily do her part-time job? A. Five hours. B. Eight hours. C. Ten hours. D. Eleven hours. () 3. is ill( 生病 ) in hospital. A. Emily. B. Kate C. Mike. D. Scott () 4. Her uncle Scott is coming( 来 ) on . A. Saturday B. Friday C. Thursday D. Wednesday () 5. What does Emily do on Saturday evening? A. Have a birthday party. B. Study with Tony. C. Play volleyball. D. Do a part-time job. B 根据下面三则广告回答后面的问题.
2012-2013学年度下学期六年级科学单元测试题 六、《拓展与应用》 三、情景解答题
2012-2013学年度下学期六年级科学单元测试题 六、《拓展与应用》 三、情景解答题
1、小李想做一辆以空气为动力的玩具小车,他在做之前应考虑一些什么问题:
( )、( )、( ).
2、当一张纸和一个小球同时从同样的高度落下的时候会( )落地,原因是( ).把两张同样的纸,一张不变,另一张揉成团再做同样的实验会( )落地,原因是( ).
别说 原因是老师说的或伽利略做过!也别太深奥了!
诺亚方州1年前1
林韵 共回答了26个问题 | 采纳率88.5%
1、小李想做一辆以空气为动力的玩具小车,他在做之前应考虑一些什么问题:
( 车身材质要轻)、(减小车轮摩擦力)、(车身流线型).
2、当一张纸和一个小球同时从同样的高度落下的时候会(小球先)落地,原因是(纸片受空气阻力比小球大).把两张同样的纸,一张不变,另一张揉成团再做同样的实验会(纸团先)落地,原因是(纸片受空气阻力比纸团大).
2012-2013跨年短语两句话,分别带上“二”和“三”的谐音,寓意12年到13年例如:10-11:时(十)过境迁,依(
2012-2013跨年短语
两句话,分别带上“二”和“三”的谐音,寓意12年到13年
例如:10-11:时(十)过境迁,依(一)然有你
11-12:依依(一)难惜别,与尔(二)再续缘
一句4-5个字为佳
爱友友1年前1
真过份 共回答了18个问题 | 采纳率94.4%
与尔(二)相识,一生(一三)相惜.
我大概是这个立意,楼主可以发挥你的文采,改一改.
2012-2013人教新版六年级英语上册期末试卷答案
2012-2013人教新版六年级英语上册期末试卷答案
三、单选.16分
( )1.Her father __in a school.
A work B works C working
( ) 2.We ___like the same things.
A don’t B doesn’t C didn’t
( ) 3.I write ___e-mail to Tom.
A a B an C /
( ) 4.Jack go _ school by bike.
A to B / C too
( ) 5.It’s hot ___ August.
A in B on C at
( ) 6.February is month of the year.
A.two B .the second C.second
( ) 7.I have classes from 9:00 11:30.
A.On B.in C.to
( )8.you like a cup of tea?
A.will B.are C.Would
( )9.You shouldn’t ______ home too late.
A.go B.goes C.to go
( )10.She ____ go shopping in the morning.
A.don’t B.doesn’t C.do
( ) 11._____ make noise in class.
A Do B Don’t C Please
( )12.My birthday is ____ Oct.1.
A in B on C at
( )13.In March ,the children trees.
A plant B.planting C.plants
( )14.___they like English?
A Are B Do C Does
( )15.Don’t be late_________ school.
A.for B.in C.of
( ) 16.He wants French.
A leaning B to learning C to learn
yoyo6261年前2
aguizi 共回答了9个问题 | 采纳率88.9%
B A B A A B B C C B B C B A B 错了别找我
苏州市2012-2013学年度第一学期高三数学期末试卷12、14填空怎么做
happy_abc1年前1
3143999 共回答了27个问题 | 采纳率96.3%
第一题 用线性规划,分子分母同时除以x^2y 另y/x=t 然后画图
第二题 运用COSa在区间[-1,1]内
这两题上学期老师讲过的
我今天上学了,
资阳市2012-2013学年度高中一年级第二学期期末检测生物答案
资阳市2012-2013学年度高中一年级第二学期期末检测生物答案
第一题是
下列有关人体内环境稳态与调节的叙诉正确的是~ABCD
……
missQueen1年前4
飞雪_飘零 共回答了22个问题 | 采纳率95.5%
一、选择题(共50分.1—20题,每题1分;21—35题,每题2分)
1-5 DCBAC; 6-10 AADDC; 11-15 CBCDC; 16-20 CBBAD; 21-25 DCCDD; 26-30 DACDD ; 31-35 DCBAC
二、填空与图示题.(本大题共3小题,共28分.)
36.(第6小题3分,其余每空1分,共14分.专业术语写错别字不给分.)
(1)神经和体液 ;
(2)B(A、B同时答也给分,只答A不给分);皮肤血管;
(3)A;C;
(4)D;糖蛋白(或蛋白质);④⑤⑧⑨⑩(答有③也对)(答到3个就给分,但答有错的不给分);拮抗;
(5)降低 HCO3- (或 HCO3- , HPO42-)
(6)(画对一个箭头得1分,共3分)
37.(每空1分,共8分.专业术语写 错别字不给分.)
(1)f、Y(答全才给分)
(2)B细胞增殖、分化(形成浆细胞和记忆细胞);体液;
(3)e;
(4)同种且生理状态相同的;一段时间后再接种等量同种病毒;④;k;
38.(每空2分,共6分.) (1)a;(2)c;(3)d
三、探究与实验题.(本大题共1小题,共22分.)
39.(每空2分,共22分.专业术语写错别字不给分.)
(1)(生物)群落;
(2)样方法;
(3)不同浓度的Cu在小麦不同生长发育时期对土壤线虫数量的影响;36
(4)①预实验;不能;设置浓度范围过小 (或未设置10-10——10-6NAA浓度的溶液进行实验,其实验结果不准确.其他合理答案也给分) ②浸泡法;沾蘸法;无关 ③形态学下端
陕西省咸阳市2012-2013学年高二 上学期第二次月考数学答案
陕西省咸阳市2012-2013学年高二 上学期第二次月考数学答案
赶在下午3点之前,
weiforest1年前5
seekermeng 共回答了17个问题 | 采纳率100%
曾经也和你一样 不过现在想到以前是多么的幼稚
好好学习 高二努力一把还能飞的高
一个过来人的劝告
利用提取公因式法计算2012+2012²-2013²
zzko1年前5
mask1980 共回答了17个问题 | 采纳率94.1%
2012+2012²-2013²
=2012×(1+2012)-2013²
=2012×2013-2013²
=2013×(2012-2013)
=2013×(-1)
=-2013
(*^__^* *^__^* *^__^*)你好,能够帮助你是我最大的快乐!如有疑问请追问,
如果您认可我的回答.请点击下面的【选为满意回答】按钮,谢谢!
北京市西城区2012-2013学年度第一学期期末试卷生物答案
北京市西城区2012-2013学年度第一学期期末试卷生物答案
第一题 右图为细胞核结构模式图,下列有关叙述.
山高万仞峰1年前1
jxgj2007 共回答了16个问题 | 采纳率100%
http://wenku.baidu.com/view/1192862dccbff121dd368338.html
篮球联赛中,每场比赛都要分出胜负,每队胜1场得2分,负1场得1分.某队预计在2012-2013赛季全部32场比赛中最少得
篮球联赛中,每场比赛都要分出胜负,每队胜1场得2分,负1场得1分.某队预计在2012-2013赛季全部32场比赛中最少得到48分,才有希望进入季后赛.假设这个队在将要举行的比赛中胜x场,要达到目标,x应满足的关系式是(  )
A.2x+(32-x)≥48 B.2x-(32-x)≥48 C.2x+(32-x)≤48 D.2x≥48
asdtfqwtew1年前1
aajinjiaxi 共回答了17个问题 | 采纳率100%
这个队在将要举行的比赛中胜x场,则要输(32-x)场,由题意得:
2x+(32-x)≥48,
故选:A.
2012-2013学年高二上学期期末考试英语.
2012-2013学年高二上学期期末考试英语.
28.-----I am sorry for having been so rude to you.
---------That’s OK.I am sure you didn’t___________.
A.have to B .mean to C.hope so D.want so
29.The room,although_________ to be kept locked,was often left open.
A.supposing B.supposed C .to be supposed D.having supposed
30.East of the lake__________,one of which is twice the size of the other.
A.lies two villages B.lie two villages C.do two villages lie D.two villages lie
31.He convinced me __________the difficulty of the work.
A.on B .at C.for D.of
32.---------You seem to show interest in cooking.
-------------_________?On the contrary,I’m tired of it.
A.Really B.Pardon C.OK D.What
33.Who would you like to have __________the letter?
A.to post B.post C .posted D.posting
34.__________you were coming today,I’d have met you at the railway station.
A.Have I known B.Had I known C.I have known D.I had known
35.------Sorry,I made a mistake again.
----------_________.Practise more and you’ll succeed.
A.Never mind B.certainly not C.Not at all D .Don’t mention it.
普鲁弗1年前1
无价的乐乐 共回答了18个问题 | 采纳率100%
28. B 我认为你不是故意的.mean to do打算做某事.
29. B be supposed to do,这是个省略句,状语从句的省略,省略主语和be啊.
30. B 这是个倒装句啊,主语是two villages,lie表示“位于”.
31. D convince sb of sth.
32. D 什么呀?恰恰相反,我很讨厌做饭呢.
33. B have sb do sth..sb就是英文词who.
34. B if从句用had+pp,助于用would have done.省略if倒桩,had提前啦.
35. A 没关系,多加练习,你会成功的.
(-1)+2+(-3)+4.2010+(-2011)+2012-2013=?
26415421年前1
hefanfzl 共回答了20个问题 | 采纳率85%
每两个一组-1+2=1-3+4=1共有2012/2=1006,余一个-20131*1006-2003=-997
跪求高一化学必修二2012-2013学年3a创新卷十二答案
614508991年前1
林丫头 共回答了15个问题 | 采纳率100%
cdbbc,dcccb,cabac,c,相同 不相同 24 13 5 23 剩下的实验与大题网上有,自己搜能搜到
石家庄2012-2013学年七年级语文第一学期末试题(人教版)温馨提示亲爱的同学们
8快乐鸟81年前0
共回答了个问题 | 采纳率
大连市七年级数学周报人教版答案13期2012-2013
4457767131年前1
miler 共回答了11个问题 | 采纳率90.9%
水平测试参考答案、1.C 2.C 3.C 4.B 5.A 6.B 7.A 8.C、9.x = - 7 10.10,等式的性质 211.- 2 12.5 13.4 14.4 15.2016.2(x - 1)+ 3x = 13、17.(1)x = -1;(2)x = 2.718.由题意,得 2 m + 5 + 2m -(1= 21.解得 m = 2.2)19.设火车长为 x米,根据题意,得x + 600=x.解得 x = 120.305所以,火车的长度为 120 米.、20.(1)不正确;①;(2)① 去分母时不能漏乘项;② 当括号外的因数是负数时,去括号后括号内的每一项都要改变符号.(3)去分母,得 3(x + 1)- 2(2 - 3x) = 6.去括号,得 3x + 3 - 4 + 6x = 6.移项,得 3x + 6x = 6 - 3 + 4.合并同类项,得 9x = 7.系数化为 1,得 x =7.921.设水流速度为 x千米 /时,根据题意,得 8(20 + x) = 12(20 - x).解得 x = 4.则 8(20 + x) = 8 ×(20 + 4) = 192.所以,水流速度为 4 千米 /时,A、B 两码头之间的距离为 192 千米.选做题22.由题意,得 3(x + 2)- 2〔3(x + 2)- 2〕= 4.解得 x = - 2.所以使等式成立的 x的值为 - 2.23.设马驮了 x个包裹,则骡子驮了(x + 2)个包裹.根据题意,得 2(x - 1) = x + 2 + 1.解得 x = 5.则 x + 2 = 7.所以马驮了 5 个包裹,骡子驮了 7 个包裹.
六年级上册2012-2013期末考试,语文作文和课内理解容易考哪些;科学的有什么实验题目?
六年级上册2012-2013期末考试,语文作文和课内理解容易考哪些;科学的有什么实验题目?
可只回答一个,满意满分.
无名月1年前1
62212369 共回答了22个问题 | 采纳率100%
作文题目:_______令我着了迷
课内:唯一的听众
科学我就不知道了
望采纳!
要有过程哦,谢了,学霸(-1)+2+(-3)+4+(-5)+……+(-2011)+2012-2013
拉尔斯1年前0
共回答了个问题 | 采纳率
金湖八年级2012-2013语文期末试卷作文
3087566091年前1
木筷子 共回答了18个问题 | 采纳率100%
我不会因为我不知道是那份卷子,谢谢合作.
黔东南州2012-2013学年度期末考试高一物理试卷
黔东南州2012-2013学年度期末考试高一物理试卷

第五题!
myrwdd1年前1
Google测试员1477 共回答了29个问题 | 采纳率93.1%
在用水平拉力作用于小球的过程中,水平拉力做的功使小球升高,转化成了小球的势能,
而小球升高的高度是L - Lcosθ = L(1 - cosθ)
所以, 水平拉力做的功是:W = mgL(1 - cosθ)
重力做功为 -mgL( 1 - cosθ)
因此,答案应选C
2012+2012²-2013²用提公因式法怎么解
2012+2012²-2013²用提公因式法怎么解
泣尽而继之以血1年前3
qianqian113 共回答了18个问题 | 采纳率88.9%
2012+2012²-2013²
=2012x (2012+1)-2013²
=(2012-2013)x2013
=-2013
2012-2013八年级牛津英语下册周报综合复习答案 如果有就谢了,我是一个新手,
020106011年前3
2550086 共回答了22个问题 | 采纳率100%
亲爱的一般这种问题没人有答案的 你应该把题目发上来