2024届金学导航答案网

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方法2：C-C-C=30.18.(本小题满分为12分)解：(I)令x=】可得，展开式中各项系数之和为(~)”，…2分而展开式中的二项式系数之和为2”，….4分.2"×(-1)”=256,.n=8.6分()...

第八章平面解析几何4.(2022全国乙文，6,5分)设F为抛物线C:y2=:5.过抛物线y2=4x的焦点的直线l交抛物线于4x的焦点，点A在C上，点B(3,0),若1AF1=P(x1,y1),Q(x2,y2)...

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1令b=1,则a=c=-1,即n=……9分3√3平面ADD1的法向量可取为m=(1,0,0),……10分1则1cos(n,m)川=n·m可n·m3√355155…11分+1+13√3庙图知二面角M=AD,-D为锐二面角，放二面角M-...

必关并根据数据绘制散点图如图所示，y个人脸识别次数十人次19140.0120.0100.080.060.040.020.068101214天数/天Q)根据散点图判断，在推广期内，)二mx十n与y二p:（...

写作第二节参考范文：Dear Mike,I'm writing to tell you that there will be a model aircraft competition held by our schoolnext Friday.Knowing you're an...

在三角形0C,中，0C=√12+2-2X1×2Xc0s牙=7，同理得，B1C=√I0,BC1=√6，所以三棱柱ABC-A1B,C1的侧面积为/0×√6+2×2sin号=2√5+2W3.四、解答题：本题共6小题，共70分，...

此时同(2)，即l:2x一y十1=0.…12分方法2设圆心到直线AB的距离为d,则|AB引=2√16-平(0<d≤√5)，…9分∴Sw=号1ABd=V16-d·d=d+I67=√=(d-8+6,…10分当=5时有最大值，此时同...

fish,vegetables and fruit.They can help us keep fit参考答案(One possible version客观题除外)听力部分I.1-5 BACBCIⅡ.6-10 CABCAIⅡ.1l.bread and milk12.does...

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AInc.comIcons InnovatorsPowerful books Elon Musk recommendsElon Musk's must-read list exhibits his well-known and deep interest in science,as well as...

me this Sunday.Children's Day is coming.I plan to buy my sister a Hanfu costume as a present.Knowingthat you're fond of traditional Chinese costumes,I...

学金国000行名校高三单元测试示范。札记全国0©0所名校高三单元洲试示范表A.Unexpected technological challengesB The failure to implant nanoparticles.E.Plus...

短文改错：When I was a little girl,my career goal is to become a medical practitioner.Now I grow up,I realize that Iwaswant be a college professor.The...

不我在哪儿能买In16Zhu44 to his hometown in Shandong.He uderstood the importance ofducation,o he set up evening s He taught the villagersread and write...

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C.Satisfied. 3.When should Tony return the money to Emma? A.In July. B.In August. C.In September. 4.What will the woman do next? A.Apologize to the ma...

get caught up in everyday life that we forget how simple it can be to bring cheer to ourselves and also others.Giving a smile away takes so little eff...

M:Good afternoon,Lee Li.I came back from Hong Kong yes- terday. W:Really?Was it on business or just for sightseeing?Feeling tired? M:On business.The t...

【答案与解析】 46.B细节题。根据第1段第1句可知，当人们不再买更大的鞋 子时，他们会认为自己停止发育了。 47.D细节题。根据第3段第1句可知，鼻子和耳朵与其他...

【答案与解析 8.A细节题。根据第1段第1句可知，作者想告诉我们人工智能 的新用途 9.C细节题。根据第2段最后1句可知，尽管技术提供了越来越 强大的手段来识别诸如...

D.Having an interest in sports activities.

June 12th?That's after the trade exhibition.. M:I think something will be happening on that day,Rebecca. W:Oh,yes.You're right.The people from Head Of...

22.What is How It Feels to Float mainly about? A.A girl's space adventures. B.Challenges of growing up. C.The murder of a teenage girl. D.A poor girl...

(Text 9) M:Do you know there is a new art exhibition in the city? W:No,I don't.Is it being held at the City Exhibition Center? M:I thought it was ther...

<p>1、2023~2024学年核心突破XGK(二)2英语答案</p><br><p>绝密★启用前12.What do we know about the first painting?2022一2023学年度高三一轮复习考点测试卷（...