2025届群力考卷答案网

从而x∈(x1,0)时g(x)>0,g(x)单调递增，当x∈(0，x2)时g(x)<0,g(x)单调递减，又g(0)=0,所以当x∈(0，x2)时，g(x)<0,不合题意.故实数m的取值范围为m≤1.………12分解法二...

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8.甲、乙两人进行了羽毛球比赛，双方约定：先胜两局者获得比赛的胜利.若某局比赛甲先发球，则这局比赛甲获胜的概率是号若某局比赛乙先发球，则这局比赛甲获胜的...

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(新教材)高三大一轮总复习多维特训卷数学在直角△BCE中，可得CE=√BE+BC=2√2，则A(0,0,0)、B(2,0,0)、C(2,2,0)、D(0,4,0)、E(0,2,1)、由△CEF为等腰三角形，可得SAc...

提示：取MN中，点为H,连接OH,OP,.OH⊥MN,设直线l的方程1.由题可知：直线sinA·x+ay十c=0与bx-sinB·y十sinC=0为y-1=k(x-2),则0H=-2类，0P=√1+4=V5,HP=的斜率分别为-...

线的对称轴为直线x=-1,-1<0,.抛物线开口向,从树叶的长宽比的平均数、中位数和众数来看，B下，当x>-1时，y随x的增大而减小，当x<-1时，种树木树叶的长约为宽的2倍...

honesty.39Business deals,friendships,family and romantic relationshipsl dependontrust.10Sometimes it's best to remain silent if your words might hurts...

DBA(1)设AC和BD交于点O,连接PO,如图，由于P,O分别是DD,BD的中点，故PO∥BD,,POC平面PAC,BD,寸平面PAC,所以直线BD∥平面PAC.(2)在四棱柱ABCD-AB,C,D,中，底面ABCD是...

Z.swinter.The bird took off06October 13 from the Yukon-Kuskokwim Delta in Alaska,followed the usual route across the Pacific Ocean down to New Caledon...

12.函数f(x)=(x-1)lnx,x∈(1，+o),下列说法中，正确的是A.f(x)>0B.f(x)在(1，+∞)单调递增c.f)=nx+1-】D.f(x)<(x-1)三、填空题（本题共4小题，每小题5分，共20分）...

数学周刊参考答案第1期华师大八年级3版5.解：(1)原式=3x2+6xy-4xy-8y2=3x2+2xy-8y2.三、解答题（共44分）》(2)原式=a3+2a2b-ab2-3a2b-6ab2+3b3=a3-a2b-7ab2+3b31...

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主题语境：人与自我一一做人与做事本文是记叙文。82岁的老太太Kelly为了偿还医疗债务仍在超市工作，顾客Rizzo得知她的情况后为她筹款还清了债务。41.B。根据下段...

2023年毕节市高一年级联考英语参考答案与评分建议第一部分(1一20题：共20小题，每小题2.5分；满分50分)1-3 DBA4-7 CACB8-11ADBC12-15 BADC16-20 EDFCG第二部分第...

的活动时，她不是以治疗师的身份去治疗别人，而是“作为一个人”进行交流；因为治疗师的治疗是单方面的，而“作为一个人”则可以敞开心扉并对谈话人表现出同理心，从...

2)由1)知。-1+m-02-2n+113a,即a239ba=andm=9,1-1）…7分2n+10(2n+3)22n+12n+3Sn=b+b2+.++b.9,1111,11、911139一一十23557+2n+12n+3232n+322(2n+3)3:.S.…9分又：他...

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22.(本题满分12分)如图，在三棱柱ABC-AB,C中，AB=AC=√5，BC=2,侧面BB,CC是正方形，二面角A-BC-B的大小是2π3(1)求三棱柱ABC-AB,C,的体积：(2)若点D是线段AB,上的...

第2期Al版Keys(One possible version):封面故事1.20102.happy七年级（上）Unit1T2基础能力训练听力原文及参考答案听力原文第一节听句子听下面五个句子，从每小题...

E.Positive aspirations can give you something to thrive for.F.Being empathic helps you gain a friend while challenging your perspective.G.There's some...

A:You look great,John.Do you exercise a lot?B:(I)A_It makes me full of energy(能量)all day..(三)双宾语、动词不定式A:(2)DB:My favorite sport is running...

A.Sharing your achievements can help you get far.B.A good workout can be as simple as a 15-minute walkC.Before you begin a workout,set a goal you want...

语法1，用括号内单词的适当形式填空。Ⅲ.用括号内单词的适当形式填空，1.I will go to the library to borrow several books1.Laughing has actually been shown...

第Ⅱ卷（非选择题部分）第二节语法填空（共10小题；每小题1.5分，满分15分）阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式It is familia...

第二节（共10小题；每小题1.5分，满分15分）9bd1im1u009uog阅读下面短文，在空白处填人1个适当的单词或括号内单词的正确形式。Chinese scientist Yuan Longping,...

听第9段材料，回答第13至16题。 13.Where is the man from? A.Britain. B.Kenya. C.The US. 14.Where does the man want the box to be picked up from? A.Post...

Looking at the smile on my father's face,I suddenly cheered up.I was sure my parents had prepared a surprise for me.So I followed. Then we went out of...

第二节（共10小题；每小题1.5分，满分15分） 阅读下面短文，在空白处填入1个适当的单词或括号内单词的 正确形式。 Silk,together with tea,medicinal herbs and...

Fort Wayne Children's Zoo This park was designed for little ones.The 20-foot-high tree house in the Indonesian Rain Forest has an entrance that only s...