26-20*图减08分如、抛物线与0轴交于点O和点B,顶点为A(1,1,直线y=工一2经过点不、表能物线父于点公家据物线份水数来心式害、：端上的一个动点，过点V作MN⊥x轴与抛...

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质量指标值k利润yP∴.Pn=P(D)+P(E)+P(F)[50,60)5t0.16[60,70)3t0.3=()"+（合）+1+8[1-()门7[70,80)2t0.4[70,80)0.18()1-(号)+门[90,100]-5e'0.047则每个包装胶带...

6.抛物线y=ar2+hx+e(a≠0)的对称轴为直线x=-1,其部分图象与轴负半轴交于点A,交y轴正半轴于点B,如图所示，则下列结论：①b2-4ac>0:②2a-b=0:⑤m(am+b)≤a-b(m为任意实(...

19.(12分)硬里胶誉一去图某公司进行工资改革，将工作效率作为工资定档的一个重要标准，大大提高了员工工作的积极性，但也引起了一些老员工的不满.为了调查员工的...

32.D【解析】细节理解题。根据第一段第一句和第二段可知，Dautenhahn的研究内容是机器人对有学习障碍的学生的影响。33.B【解析】推理判断题。通读第六段可知，该...

当x>十∞时，g(x)-→0，当2>e时，g(x)>0.…11分1枚a的取值范围是(0，eln2.12分22.(1)解：因为(x)=1十21一十x,…1分所以了(1)=中十1=号，所以曲线y=x)在x=1处切线的斜...

数代r)单调递增，有fa)>f(-0,a)十f0)>f0)+f(-6)=心-26-b+e-8+6=心十e-b,令h(x)=e+ex-x2,有h'(x)=e-ex-2x.令p(x)=e-ex-2x,有9'(x)=e+ex-2≥2√e'·ex一2=0（当且仅当...

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所以22>2r,0所以0<0<1，若函数8)在（区，3西）上有零点，222π）3π3下2123g5o-yk0时，得2302解得410当时得，30，解得109<0<314<<综上：函数8)在(5，))上有零点时...

landing every few minutes with food.Cody never tired of watching the finch family.He noticed when their parents came with food,the babies cried.But wh...

【分析】(1)由正弦定理化边为角后，由诱导公式和两角和的正弦公式化简后可求得B;(2)由二倍角公式求得sin2A,cos2A后再由两角和的正弦公式可求值：(3)由正弦定理求...

入司二月考卷8.设a=。b=n2十（e为自然对数的底数)c=n3一号，则教学札记A.a<b<cB.a<c-b【题分折1=h3-号-n专号-n+太hw+之-n0会。C.ba<cD.b<c<a一1=lne气，所以狗间...

80.Yes,they do.六、81.Good morning82.Are you Steve83.Nice to meet you84.Yes,I am85.OK七、A:Good afternoon.JimB:Good afternoon,Wang Mei!A:Nice to see y...

gestures...were more likely to have heard and interpreted the word...with a hand gesture.知，说话有手势时，观看者会更容易听到并理解，参与者更易被伴随...

2I.C。理解具体信息。根据The Sheep-Pig介绍内容中的by Dick King-Smith以及Famouslymade into the film Babe,this much-loved animal story turns 40 this year...

第25期B版测试题听力原文（略）第25期B版测试题参考答案21-25 ABCDA26-30 ACBAA31-35 DDBDC36-40 DEAFC41-45 DABCD46-50 ACDBA51-55 CBDAC56-60 BDCBA61-70(One...

本版供稿人：河南王宇令汪聪（本版参考答案见下期）第47期参考答案3.compare them with other children /kids2.Don't.wait until the last..minute to do your4....

could make you just as happy as that extra money.An interesting new study shows people who are physically active have a greater sense ofwell-being()th...

C.Ending up sitting in a penalty chair. D.Calling his sister“that baby”for weeks. 27.What's the best title for the text? A.A mother's concern B.A moth...

B.Las Caletas Beach Hideaway. C.Sunset Cruise. D.Street Food and Taco Tour in Puerto Vallarta.

【答案与解析】 研究发现，理性的乐观主义者最具有幸福感。 32.D根据第2段可知，这项研究通过比较不同群体18年间的财 务预期、收入和幸福感而得出的结论。 33.B...

alone. Books were my true 49 back then.I was so 50 that the authors wrote those books.The kindness they offered me with their books saved my life.One...

(Text 3) W:John,what do you think of Dr Smith's speech?I think it is very interesting. M:To be honest,it disappointed me.It is not as moving as I ex-...

第四部分写作（共两节，满分40分） 第一节（满分15分） 假定你是李华，你校将举办书法比赛。请给你校热爱书法的 美国交换生Joe写一封电子邮件，邀请他参加比赛。...

D.The apps are partly to blame for failure of some delivery business. 35.What can be the best title for the text? A.A special app helping take orders...