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2024学年广州市九年级语文上学期期中考试卷附答案解析

2024学年广州市九年级语文上学期期中考试卷附答案解析

2024学年广州市九年级语文上学期期中考试卷全卷满分为120分,考试用时为120分钟。

第一部分积累与运用(共24分)一、(5小题,16分)1.下列词语中,每对加点字的读音都相同的一项是(2分)A.宿营/星宿旁骛/趋之若鹜B.教诲/阴晦应和/随机应变C.聘请/娉婷掺和/随声附和D.案牍/亵渎间隔/间不容发2.下列词语中,没有错别字的一项是(2分)A.天娇不可名状游弋言不及意B.秘决鸠占鹊巢譬如李代桃疆C.绵延红装素裹余晖矫揉造作D.葴言形消骨立云霄富丽堂皇3.下列句子中,加点词语使用最恰当的一项是(2分)A.这部电影倾注了导演的大量心血,情节跌宕起伏,打斗场面令人印象深刻,因此上映当天的票房以锐不可当之势一路飙升。

B.她擅长诗文写作,在文学领域的造诣颇高,平日里也博览群书以充实自己的精神世界,经常在朋友圈发布一些附庸风雅的读书笔记。

C.即便身体残疾,这一位乒乓球运动员还是一意孤行,咬紧牙关,将球拍绑在手上,凭借持久的努力在本届奥运会上闯出自己的世界。

D.我们在完成思维导图时往往需要对整篇文章断章取义,以便快速掌握每个段落的核心内容和精彩情节,从而整理出清晰的逻辑框架。

4.下列句子中,没有语病的一项是(2分)A.“非遗”项目“打铁花”,不仅展现了传统艺术的魅力,还为观众带来了一场视觉盛宴B.天文专家表示,今年中秋将会是一轮“超级月亮”,中秋能欣赏到大而圆满明亮的月亮。

C.钱塘江大潮退去后,裸露的滩涂上出现了棵棵栩栩如生的“巨树”,枝杈分明,让人震撼。

D.火车票改签新规定放宽了改签时间,旨在减轻消费者的经济负担和行程变化引发的焦虑。

5.班级举行了“以和为贵,和气生美”的主题班会,并围绕这一中华传统美德展开了一系列学习活动。

请你完成以下综合性学习任务。

(8分)(1)任务一:你搜集了一些名人名言,其中不符合“以和为贵”主题的一项是(1分)A.天时不如地利,地利不如人和。

B.万物负阴而抱阳,冲气以为和。

C.以兼相爱,交相利之法易之。

北师大版五年级数学下册期中测试试卷及答案.pdf

北师大版五年级数学下册期中测试试卷及答案.pdf

) dm2,体积是(
) dm 3
3. 用铁丝焊接成一个长 12 厘米,宽 10 厘米,高 5 厘米的长方体的框架,至少需要铁丝 (? ?? ? )厘米。
4. 一个数和它倒数的乘积是(
);(
)的倒数是 5; 0.5 的倒数是

)。
线 : 级 班
: 校 学
5. 一辆摩托车平均每分钟行驶 3 千米, 10 分钟行(
2. 下面各题写出必要的计算过程。 (8 分,每小题 2 分)
4 ( 1)15 × 75
79 (2) 18 × 14
(3) 8 ÷ 4 25 5

(4) 4 ÷ 3 98
3. 解方程。( 6 分,每小题 2 分)

1)
7 10
4
x=
3
5 10 ( 2) x ÷8 = 17

51 (3) 5x- 6 =6


2. 长方体的每个面都是长方形。………………
……………………………


1
2
3. 甲数的 2 一定比乙数的 3 小。………………………………………………


5
4. 一个自然数( 0 除外)与 7 相乘,积一定小于这个自然数。……………


5. 正方体是长、宽、高都相等的长方体。……………………………………
2 分)
5. 做一个无盖的棱长为 6 分米的正方体铁盒,至少需要多大的面积的铁皮?(
5 分)
6.一个长方体容器,底面长 4 分米、宽 2 分米,高 1.5 分米,放入一个土豆后水面升高了 0.2 分米,求这个土豆的体积是多少?( 5 分)
北师大版五年级数学下册期中测试卷答案 一、选择题

2024学年上海市普陀区八年级语文上学期期中考试卷附答案解析

2024学年上海市普陀区八年级语文上学期期中考试卷附答案解析

2024学年上海市普陀区八年级语文上学期期中考试卷一、古诗文阅读(24分)(一)默写与运用(8分)1.最爱湖东行不足,。

(白居易《钱塘湖春行》)2.,良多趣味。

(郦道元《三峡》)3.夕日欲颓,。

(陶弘景《答谢中书书》)4.假期小语外出郊游。

傍晚夕阳下,遥望山野,满目是浓浓秋意,不由让人联想到王绩《野望》中的诗句:,。

(二)阅读下面古诗,完成第5-6题(3分)黄鹤楼昔人已乘黄鹤去,此地空余黄鹤楼。

黄鹤一去不复返,白云千载空悠悠。

晴川历历汉阳树,芳草萋萋鹦鹉洲。

日暮乡关何处是?烟波江上使人愁。

5.“乡关”的意思是。

(1分)6.以下对诗歌的理解不正确的一项是______。

(2分)A.首联从神话传说起笔,“空”表现了鹤去楼空,诗人怅然有所失的心情。

B.颔联虚中有实,黄鹤不复返只留白云飘荡无定,“空”表现诗人的怅惘。

C.颈联是日景,诗人远眺江岸原野,芳草“萋萋”绘出诗人满目萧瑟之景。

D.尾联写晚景,江面上升起缭绕凄迷的雾霭,惹得诗人生出怀乡“愁”绪。

(三)阅读下面两文,完成第7-11题(13分)[甲]与朱元思书风烟俱净,天山共色。

从流飘荡,任意东西。

自富阳至桐庐一百许里,奇山异水,天下独绝。

水皆缥碧,千丈见底。

游鱼细石,直视无碍。

急湍甚箭,猛浪若奔。

央岸高山,皆生寒树,负势竞上,互相轩邈,争高直指,千百成峰。

泉水激石,泠泠作响;好鸟相鸣,嘤嘤成韵。

蝉则千转不穷,猿则百叫无绝。

鸢飞戾天者,望峰息心;经纶世务者,窥谷忘反。

横柯上蔽,在昼犹昏;疏条交映,有时见日。

【乙】与顾章书仆去月谢病,还觅薜萝①。

梅溪之西,有石门山者,森壁争霞,孤峰限日;幽岫含云,深溪蓄翠;蝉吟鹤唳,水响猿啼,英英相杂,绵绵成韵。

既素重②幽居,遂葺宇其上。

幸富菊花,偏饶竹实③。

山谷所资,于斯已办。

仁智之乐,岂徒语哉!【注释]①薜萝:薜荔和女萝,两者皆野生植物。

借指隐者或高士的住所。

②重:重视,这里是向往的意思。

③菊花、竹实:都是隐士的食物。

湖南省长沙市2024-2025学年高一上学期期中考试 数学含答案

湖南省长沙市2024-2025学年高一上学期期中考试 数学含答案

2024年下学期期中考试试卷高一数学(答案在最后)时量:120分钟分值:150分一、单选题:本题共8小题,每小题5分,共40分.在每小题给出的四个选项中,只有一项是符合题目要求的.1.若集合{1,2}A =,{,}B xy x A y A =∈∈,则集合B 中元素的个数为()A.4B.3C.2D.12.设,a b ∈R ,则“a b =”是“22a b =”的()A.充分不必要条件B.必要不充分条件C.充要条件D.既不充分也不必要条件3.命题“a ∃∈R ,210ax +=有实数解”的否定是()A.a ∀∈R ,210ax +≠有实数解 B.a ∃∈R ,210ax +=无实数解C.a ∀∈R ,210ax +=无实数解D.a ∃∈R ,210ax +≠有实数解4.已知集合{1,2}M =,{1,2,4}N =,给出下列四个对应关系:①1y x=,②1y x =+,③y x =,④2y x =,请由函数定义判断,其中能构成从M 到N 的函数的是()A.①②B.①③C.②④D.③④5.汽车经过启动、加速行驶、匀速行驶、减速行驶之后停车,若把这一过程中汽车的行驶路程s 看作时间t 的函数,其图像可能是()A. B.C. D.6.若0a >,0b >,且4a b +=,则下列不等式恒成立的是()A.02a << B.111a b+≤2≤ D.228a b +≤7.已知定义在R 上的奇函数()f x 在(,0)-∞上单调递减,且(2)0f =,则满足()0xf x <的x 的取值范围是()A.(,2)(2,)-∞-+∞B.(0,2)(2,)+∞ C.(2,0)(2,)-+∞ D.(,2)(0,2)-∞-8.若函数2(21)2(0)()(2)1(0)b x b x f x x b x x -+->⎧=⎨-+--≤⎩,为在R 上的单调增函数,则实数b 的取值范围为()A.1,22⎛⎤⎥⎝⎦ B.1,2⎛⎫+∞⎪⎝⎭C.[]1,2 D.[2,)+∞二、多选题:本题共3题,每小题6分,共18分,在每小题给出的选项中,有多项符合题目要求.全选对的得6分,选对但不全的得部分分,有选错的得0分.9.对于函数()bf x x x=+,下列说法正确的是()A.若1b =,则函数()f x 的最小值为2B.若1b =,则函数()f x 在(1,)+∞上单调递增C.若1b =-,则函数()f x 的值域为RD.若1b =-,则函数()f x 是奇函数10.已知二次函数2y ax bx c =++(a ,b ,c 为常数,且0a ≠)的部分图象如图所示,则()A.0abc >B.0a b +>C.0a b c ++< D.不等式20cx bx a -+>的解集为112x x ⎧⎫⎨⎬⎩⎭-<<11.定义在R 上的函数()f x 满足()()()f x f y f x y +=+,当0x <时,()0f x >.则下列说法正确的是()A.(0)0f = B.()f x 为奇函数C.()f x 在区间[],m n 上有最大值()f n D.()2(21)20f x f x -+->的解集为{31}x x -<<三、填空题,本题共3小题,每小题5分,共15分.12.若36a ≤≤,12b ≤≤,则a b -的范围为________.13.定义在R 上的函数()f x 满足:①()f x 为偶函数;②()f x 在(0,)+∞上单调递减;③(0)1f =,请写出一个满足条件的函数()f x =________.14.对于一个由整数组成的集合A ,A 中所有元素之和称为A 的“小和数”,A 的所有非空子集的“小和数”之和称为A 的“大和数”.已知集合{1,0,1,2,3}B =-,则B 的“小和数”为________,B 的“大和数”为________.四、解答题:本题共5小题,共77分.解答应写出文字说明、证明过程或演算步骤.15.(13分)已知集合{3}A x a x a =≤≤+,集合{1B x x =<-或5}x >,全集R U =.(1)若A B =∅ ,求实数a 的取值范围;(2)若命题“x A ∀∈,x B ∈”是真命题,求实数a 的取值范围.16.(15分)已知幂函数()2()253mf x m m x =-+是定义在R 上的偶函数.(1)求()f x 的解析式;(2)在区间[]1,4上,()2f x kx >-恒成立,求实数k 的取值范围.17.(15分)已知关于x 的不等式(2)[(31)]0mx x m ---≥.(1)当2m =时,求关于x 的不等式的解集;(2)当m ∈R 时,求关于x 的不等式的解集.18.(17分)为促进消费,某电商平台推出阶梯式促销活动:第一档:若一次性购买商品金额不超过300元,则不打折;第二档:若一次性购买商品金额超过300元,不超过500元,则超过300元部分打8折;第三档:若一次性购买商品金额超过500元,则超过300元,不超过500元的部分打8折,超过500元的部分打7折.若某顾客一次性购买商品金额为x 元,实际支付金额为y 元.(1)求y 关于x 的函数解析式;(2)若顾客甲、乙购买商品金额分别为a 、b 元,且a 、b 满足关系式45085b a a =++-320(90)a ≥,为享受最大的折扣力度,甲、乙决定拼单一起支付,并约定折扣省下的钱平均分配.当甲、乙购买商品金额之和最小时,甲、乙实际共需要支付多少钱?并分析折扣省下来的钱平均分配,对两人是否公平,并说明理由.(提示:折扣省下的钱=甲购买商品的金额+乙购买商品的金额-甲乙拼单后实际支付的总额)19.(17分)经过函数性质的学习,我们知道:“函数()y f x =的图象关于原点成中心对称图形”的充要条件是“()y f x =是奇函数”.(1)若()f x 为定义在R 上的奇函数,且当0x <时,2()1f x x =+,求()f x 的解析式;(2)某数学学习小组针对上述结论进行探究,得到一个真命题:“函数()y f x =的图象关于点(,0)a 成中心对称图形”的充要条件是“()y f x a =+为奇函数”.若定义域为R 的函数()g x 的图象关于点(1,0)成中心对称图形,且当1x >时,1()1g x x=-.(i )求()g x 的解析式;(ii )若函数()f x 满足:当定义域为[],a b 时值域也是[],a b ,则称区间[],a b 为函数()f x 的“保值”区间,若函数()tg()(0)h x x t =>在(0,)+∞上存在保值区间,求t 的取值范围.2024年下学期期中考试参考答案高一数学1.B2.A3.C4.D【详解】对于①,1y x =,当2x =时,1N 2y =∉,故①不满足题意;对于②,1y x =+,当1x =-时,110N y =-+=∉,故②不满足题意;对于③,y x =,当1x =时,1y N =∈,当2x =时,2N y =∈,故③满足题意;对于④,2y x =,当1x =时,1y N =∈,当2x =时,4N y =∈,故④满足题意. D.5.A6.C 【详解】因为0a >,0b >,当3a =,1b =时,3ab =,1114133a b +=+=,2210a b +=,所以ABC 选项错误.由基本不等式a b +≥22a b+≤=,选C.7.A 【详解】定义在R 上的奇函数()f x 在(,0)-∞上单调递减,故函数在(0,)+∞上单调递减,且(2)0f =,故(2)(2)0f f -=-=,函数在(2,0)-和(2,)+∞上满足()0f x <,在(,2)-∞-和(0,2)上满足()0f x >.()0xf x <,当0x <时,()0f x >,即(,2)x ∈-∞-;当0x >时,()0f x <,即(2,)x ∈+∞.综上所述:(,2)(2,)x ∈-∞-+∞ .故选A.8.C 【详解】21020221b b b ->⎧⎪-⎪≥⎨⎪-≥-⎪⎩,解得12b ≤≤.∴实数b 的取值范围是[]1,2,故选C.9.BCD 10.ACD11.ABD解:因为函数()f x 满足()()()f x f y f x y +=+,所以(0)(0)(0)f f f +=,即2(0)(0)f f =,则(0)0f =;令y x =-,则()()(0)0f x f x f +-==,故()f x 为奇函数;设12,x x ∈R ,且12x x <,则1122122()()()()f x f x x x f x x f x =-+=-+,即1212())()(0f x f x f x x -=->,所以()f x 在R 上是减函数,所以()f x 在区间[],m n 上有最大值()f m ;由2(21)(2)0f x f x -+->,得2(23)(0)f x x f +->,由()f x 在R 上减函数,得2230x x +-<,即(3)(1)0x x +-<,解得31x -<<,所以2(21)(2)0f x f x -+->的解集为{31}x x -<<,故选ABD.12.[1,5]13.21x -+(答案不唯一)14.5,80【详解】由题意可知,B 的“小和数”为(1)01235-++++=,集合B 中一共有5个元素,则一共有52个子集,对于任意一个子集M ,总能找到一个子集M ,使得M M B = ,且无重复,则M 与M 的“小和数”之和为B 的“小和数”,这样的子集对共有54222=个,其中M B =时,M =∅,考虑非空子集,则子集对有421-对,则B 的“大和数”为4(21)5580-⨯+=.故答案为:5;80.15.【详解】(1)因为3a a <+对任意a ∈R 恒成立,所以A ≠∅,又A B =∅ ,则135a a ≥-⎧⎨+≤⎩,解得12a -≤≤;(2)若x A ∀∈,x B ∈是真命题,则有A B ⊆,则31a +<-或5a >,所以4a <-或5a >.16.【详解】(1)因为2()(253)mf x m m x =-+是幂函数,所以22531m m -+=,解得2m =或12,又函数为偶函数,故2m =,2()f x x =;(2)原题可等价转化为220x kx -+>对[1,4]x ∈恒成立,分离参数得2k x x <+,因为对[1,4]x ∈恒成立,则min 2(k x x<+,当0x >时,2x x +≥=当且仅当2x x=即x =时取得最小值.故k <17.【详解】(1)解:当2m =时,不等式可化为(1)(5)0x x --≥解得1x ≤或5x ≥,所以当2m =时,不等式的解集是{1x x ≤或5}x ≥.(2)①当0m =时,原式可化为2(1)0x -+≥,解得1x ≤-;②当0m <时,原式可化为2((31)]0x x m m ---≤,令231m m =-,解得23m =-或1;1)当23m <-时,231m m -<.故原不等式的解为231m x m -≤≤;2)当23m =-时,解得3x =-;3)当203m -<<时,231m m <-,原不等式的解为231x m m≤≤-;③当0m >时,原式可化为2((31)]0x x m m---≥,1)当01m <<时,231m m >-,2x m∴≥或31x m ≤-;2)当1m =时,不等式为2(2)0x -≥,x ∈R ;3)当1m >时,231m m <-,31x m ∴≥-或2x m≤.综上,当23m <-时,原不等式的解集为231x m x m ⎧⎫⎨⎬⎩⎭-≤≤;当23m =-时,不等式的解集为{}3x x =-;当203m -<<时,解集为231x x m m ⎧⎫⎨⎬⎩⎭≤≤-;当0m =时,解集为{}1x x ≤-;当01m <<时,不等式的解集是{2x x m ≥或31}x m ≤-;当1m =时,不等式的解集为R ;当1m >时,解集是{31x x m ≥-或2}x m≤.18.【详解】(1)由题意,当0300x <≤时,y x =;当300500x <≤时,3000.8(300)0.860y x x =+-=+;当500x <时,3000.8(500300)0.7(500)0.7110y x x =+-+-=+.综上,,03000.860,300500 0.7110,500x x y x x x x <≤⎧⎪=+<≤⎨⎪+<⎩.(2)甲乙购买商品的金额之和为4502320(90)85a b a a a +=++≥-.45045023202(85)3201708585a b a a a a +=++=-+++--490230490550≥=⋅+=(元)当且仅当4502(85)85a a -=-即8515a -=±时,原式取得最小值.此时100a =(或70a =,舍去),550450b a =-=(元)因为550500>,则拼单后实付总金额0.7550110495M =⨯+=(元)故折扣省下来的钱为55049555-=(元).则甲乙拼单后,甲实际支付5510072.52-=(元),乙实际支付55450422.52-=(元)而若甲乙不拼单,因为100300<,故甲实际应付100a '=(元);300450500<<,乙应付0.845060420b '=⨯+=(元).因为420元<422.5元,若按照“折扣省下来的钱平均分配”的方式,则乙实付金额b 比不拼单时的实付金额b '还要高,因此该分配方式不公平.(能够答出“乙购买的商品的金额是甲购买商品的金额的4.5倍,则乙应减的价钱应是甲的4.5倍,故不公平”之类的答案的可酌情给分)答:当甲、乙的购物金额之和最小时,甲、乙实际共需要支付495元.若按“折扣省下来的钱平均分配”的方式拼单,则拼单后乙实付422.5元,比不拼单时的实付420元还要高,因此这种方式对乙不公平.19.【详解】(1)()f x 为定义在R 上的奇函数,当0x >时,0x -<,所以()()f x f x =--()2211x x ⎡⎤=--+=--⎣⎦,又()00f =,所以()221,00,01,0x x f x x x x ⎧+<⎪==⎨⎪-->⎩;(2)(i )因为定义域为R 的函数()g x 的图象关于点()1,0成中心对称图形,所以()1y g x =+为奇函数,所以()()11g x g x +=--,即()()2g x g x =--,1x <时,21x ->,所以()()1121122g x g x x x ⎛⎫=--=--=-+ ⎪--⎝⎭.所以()11,111,12x xg x x x ⎧-≥⎪⎪=⎨⎪-+<⎪-⎩;(ii )()()()11,1tg 011,12t x x h x x t t x x ⎧⎛⎫⋅-≥ ⎪⎪⎪⎝⎭==>⎨⎛⎫⎪⋅-+< ⎪⎪-⎝⎭⎩,a )当()0,1x ∈时,()11()11022h x t t t x x ⎛⎫⎛⎫=⋅-+=⋅--> ⎪ --⎝⎭⎝⎭在()0,1单调递增,当()[,]0,1a b ⊆时,则112112t a a t bb ⎧⎛⎫⋅--= ⎪⎪-⎪⎝⎭⎨⎛⎫⎪⋅--= ⎪⎪-⎝⎭⎩,即方程112t x x ⎛⎫⋅--= ⎪-⎝⎭在()0,1有两个不相等的根,即()220x t x t +--=在()0,1有两个不相等的根,令()()()22,0m x x t x t t =+-->,因为()()0011210m t m t t ⎧=-<⎪⎨=+--=-<⎪⎩,所以()220x t x t +--=不可能在()0,1有两个不相等的根;b )当()1,x ∈+∞时,()()110h x t t x ⎛⎫=⋅-=> ⎪⎝⎭在()1,+∞单调递增,当()[,]1,a b ⊆+∞时,则1111t a a t bb ⎧⎛⎫⋅-= ⎪⎪⎪⎝⎭⎨⎛⎫⎪⋅-= ⎪⎪⎝⎭⎩,即方程11t x x ⎛⎫⋅-= ⎪⎝⎭在()1,+∞有两个不相等的根,即20x tx t -+=在()1,+∞有两个不相等的根,令()()2,0n x x tx t t =-+>,则有()2110022212n t t t t t n t t t⎧=-+>⎪⎪⎪⎛⎫⎛⎫⎛⎫=-⋅+<⎨ ⎪ ⎪ ⎪⎝⎭⎝⎭⎝⎭⎪⎪>⎪⎩,解得4t >.c )当01a b <<<时,易知()g x 在R 上单调递增,所以()()()tg 0h x x t =>在()0,+∞单调递增,此时11211t a a t bb ⎧⎛⎫⋅--= ⎪⎪-⎪⎝⎭⎨⎛⎫⎪⋅-= ⎪⎪⎝⎭⎩,即()()()()()2222211221111111211112111a a a a a t a a a a a b b b t b b b b ⎧---+-====-+⎪⎪----⎨-+-+⎪===-++⎪---⎩令()()()11,011r a a a a =--+<<-,则易知()r a 在()0,1递减,所以()()00r a r <=即0t <,又1b >时,()112241t b b =-++≥=-,当且仅当()111b b -=-,即2b =时取等,以()()110111241t a a t b b ⎧=-+<⎪⎪-⎨⎪=-++≥⎪-⎩,此时无解;t 的范围是()4,+∞.。

2024-2025学年度第一学期高一英语期中考试卷(含解析)

2024-2025学年度第一学期高一英语期中考试卷(含解析)

2024-2025学年度第一学期高一英语期中考试卷试卷满分:100分第一部分阅读理解(共20 小题;每小题2.5 分,满分50 分)第一节阅读下列短文,从每题所给的A、B、C 和D 四个选项中,选出最佳选项。

AHere are some pet-friendly universities in the UK and US.University of IllinoisStudents are allowed up to two pets in each apartment, as well as a fish tank of no more than 50 gallons.To keep a pet, you will need to get approval from the Family &amp; Graduate housing department at the University of Illinois. You will have to provide proof that your pet is up to date with its vaccinations(疫苗), and pay a monthly US$30 pet fee, which is non-refundable(不可退款的).Your pet can’t be left for extended periods of time, and if there’s evidence that you’ve left it alone due to vacation or illness, the university may remove it.Harvard UniversityWith as many as 12 pet-friendly apartments, Harvard is a very pet-friendly university. It allows students to have fish in a tank of no more than 50 gallons, except for Harvard’s Cronkhite Graduate Center.In Harvard’s pet-friendly apartments, you’re allowed: one cat or one dog, which can’t be over 40 pounds when fully grown. At most, two pet birds.University of British Columbia Students can take advantage of the university’s B.A.R. K program, which uses the calming power of therapy dogs to help them.B.A.R. K started at the University of British Columbia, after an assistant professor called Dr. John-Tyler Binfet noticed that he couldn’t walk across campus without students running over to play with his dog, Frances. The students told him they were homesick and missed their pets, which encouraged Binfet to establish B.A.R. K as a way of fighting their loneliness.University of OxfordThe University of Oxford is famous for its resident pets, who happily wander around college grounds. Many Oxford colleges have their own tortoise and take part in the annual Corpus Christi tortoise race.Although you are not allowed to keep your own pet as a student, several Oxford colleges hold dog petting and walking therapy sessions.1.What is one of the rules for keeping pets at the University of Illinois?A.Pet keepers should pay a monthly US$ 30 pet fee which will be returned.B.Pets can’t be left alone in the apartments due to vacation or illness.C.Students have to keep fish in a fish tank of no more than 20 gallons.D.The cat or dog can’t be over 40 pounds when fully grown.2.Why did Dr. John-Tyler Binfet start B.A.R. K?A.To help students to fight against homesickness.B.To do research on dogs and train them to be pets.C.To help more professors to do exercise on campus.D.To give assistance to the pet dogs by offering them foods.3.Which university doesn’t allow students to keep pets?A.Harvard University. B.University of Oxford.C.University of Illinois. D.University of British Columbia.BA survey by the American Psychological Association shows that one in ten adults reads online news at least once an hour. A lot has been written about the mental health influence from news addiction, and in particular from reading negative reports. Just like junk food, “junk” news can be bad for our health.In recent years, things have been getting increasingly more negative. A study of the content of New Zealand’s largest newspaper showed that while in 1973 the average number of stories about death on the front page was 0.75, by 2013 it was 4.1(and no, there weren’t five times more people dying).What’s more, online news, and the stories we read on mobile phones in particular, tend to be even more negative than print. A 2019 study of 50 U.S. newspapers showed that mobile versions of newspapers report three times more stories about disasters and accidents than paper ones.Such negative reports lead people to believe that things are worse than they really are. They can lead to stress, worry and lower spirits.Experiments also suggest that loneliness and poor relationships have been connected with reading negative reports. After reading negative reports, people are less likely to help others. Even worse, when we check news on smart phones, we may “phub” our loved ones, which leads to lower relationship satisfaction.Negative reports attract our attention far more than positive ones. That’s a global happening. I hope, however, that if we realize that negative news is spoiling our moods, we might all be more willing to change. 4.Why is “junk food” mentioned in the first paragraph?A.To entertain readers.B.To introduce the topic.C.To make an advertisement.D.To keep readers away from it.5.What can we learn about the study in Paragraph 2?A.The death rate in New Zealand is very high.B.Print newspapers have become less popular.C.Stories about death have become less popular.D.Negative reporting has been increasing over years. 6.What may negative reports lead people to do?A.Live a hopeful life.B.Become more careful.C.Become less likely to help others.D.Pay more attention to their physical health.7.What does the underlined word “phub” in Paragraph 5 mean?A.Ignore B.Hate C.Laugh at D.Care about8.Which of the following can be the best title for the text?A.A Survey on News Reading Habits B.Negative Effects of Mobile PhonesC.Is Online News Better Than Print?D.Is Junk News a Danger to Health?CThere was once a boy called Mario who loved to have lots of friends at school. However, he wasn’t sure whether or not his classmates were his true friends, so he asked his grandpa. The old man answered, “I have just exactly what you need; it’s in the attic (阁楼). Wait here for a minute.”Grandpa left, soon returning as though carrying something in his hand, but Mario could see nothing there. “Take it. It’s a very special chair. Because it’s invisible (无形的) it’s rather difficult to sit on, but if you take it to school and you manage to sit on it, you’ll be able to tell who your true friends are.”Mario took the strange invisible chair and went to school. At break time he asked everyone to form a circle, and he put himself in the middle, with his chair. “Nobody move. You’re about to see something amazing,” Mario said.Then Mario tried sitting on the chair. He missed and fell straight onto his backside. Everyone had a pretty good laugh. Mario wouldn’t be beaten. He kept trying to sit on the magic chair, and kept falling to theground... until, suddenly, he tried again and didn’t fall. This time he sat, hovering (悬停) in mid-air.Looking around, Mario saw George, Lucas, and Diana — three of his best friends — holding him up, so he wouldn’t fall. At the same time, many others he had thought of as friends were doing nothing but make fun of him, enjoying each and every fall.Leaving with his three friends, Mario explained to them how his grandpa had so cleverly thought of such a good idea. Now he knows that those who take joy in our misfortunes (不幸) when we are in difficulty are not our true friends.9.What did Mario’s grandpa take from the attic?A.An invisible chair.B.An old chair.C.A real chair.D.Nothing.10.Why did Mario’s grandpa give him the invisible chair?A.To see whether Mario could sit on it. B.To test who were Mario’s true friends.C.To let Mario have fun with his classmates.D.To test whether Mario was popular at school. 11.How was Mario able to hover in mid-air?A.He saw the invisible chair suddenly. B.He managed to sit on the chair finally.C.His friends held him up with their hands. D.His classmates gave him a chair to sit on.12.What does the story tell us?A.Never laugh at our friends. B.True friends can help us do magic.C.True friends are those who care for us. D.Having too many good friends isn’t a good thing.DSure, it’s good to get along well with your teacher because it makes the time you spend in the classroom more pleasant.And yes, it’s good to get along well with your teacher because, in general, it’s smart to learn how to get along well with the different types of people you’ll meet throughout your life.In fact, kids who get along well with their teachers not only learn more, but they’re more comfortable with asking questions and getting extra help. This makes it easier for them to understand new materials and makes them do their best on tests. When you have this kind of relationship with a teacher, he or she can be someone to turn to with problems, such as problems with learning or school issues (问题).Here is a question:What if you don’t get along with your teachers? In fact, teachers want to get along well with you and enjoy seeing you learn. But teachers and students sometimes have personality clashes (个性冲突), which can happen between any two people. If you show your teacher that you want to make the situation better, he or she will probably do everything possible to make that happen. By dealing with a problem like this, you learn something about how to get along with people who are different from you.However if a certain teacher isn’t your favorite, you can still have a successful relationship with him or her especially if you fulfill (履行) your basic responsibilities as a student.Here are some of those responsibilities (责任):Attend class ready to learn.Be prepared for class with the right stationery, books, and completed assignments (作业).Listen when your teacher is talking.Do your best, whether it’s a classroom assignment, homework, or a test.13.According to the passage, what will happen to you when getting along well with your teachers ?A.We will have no problems with studyB.We will get a better seat in the classroomC.We will get the best scores in the examsD.We will have more pleasant time in the classroom14.What does the underlined word “that” refers to in the fourth paragraph?A.The happy time you have in the classroomB.Getting along very well with classmatesC.A better relationship between you and your teacherD.The disappearance of personality differences15.What does the passage mainly talk about?A.The importance of friendship in schools.B.The importance of a good relationship with your teachers.C.Studying skills for students.D.Useful skills to get along well with your teachers.16.As a student, what will you do if you don’t like a certain teacher ?A.You fulfill (履行) your basic responsibilities as a studentB.You are thought of as a good studentC.You know some basic social skillsD.You are easygoing and helpful第二节七选五(每小题1分,共5分,根据短文内容,选出能填入空白处的最佳选项。

2023-2024学年七年级上学期语文期中考试卷(含答案)

2023-2024学年七年级上学期语文期中考试卷(含答案)

2023-2024学年七年级上学期语文期中考试卷姓名:__________班级:__________考号:__________题号一二三总分评分一、积累与运用(共8小题,计24分积累与运用步入初中,我们认识了新同学,结交了新朋友。

为帮助同学们更好地理解友谊的真谛,学校准备设计“友谊与成长同行”主题文化墙。

请你参与其中,完成下列任务。

【活动一:识真挚友情】挚友研学组的同学正在准备研学会的开幕式主持稿,下面是主持人小秦写的一段开场白,请你帮他解决遇到的文字问题。

尊敬的各位老师、亲爱的同学们:每当说起“朋友”一词时,我们内心霎时涌起一股暖流。

高兴时,朋友可以与你分享快乐;失落时,朋友能帮你zhù蓄力量。

A.朋友是一束阳光,温柔地照在你的身上;朋友是一首歌曲,在你忧伤时响起悠扬的曲调。

B.拥有这样的朋友,便能安静我们受伤的心灵。

有了朋友,我们的心就有了着落,有了依靠。

与朋友携手前行,方能在人迹hǎn□至处遇见美不胜收的风景!C.同学们,你希望拥有什么样的朋友呢?欢迎发表拙见。

1.根据语境,写出加点字正确的读音。

①每当说起“朋友”一词时,我们内心霎.时涌起一股暖流。

②有了朋友,我们的心就有了着.落,有了依靠。

2.根据语境,写出下面词语中拼音所对应的汉字。

zhù()蓄人迹hǎn()至3.A句运用了的修辞手法。

4.小秦觉得B句中画横线部分存在搭配不当的问题,请你写出修改意见。

____________________________________________________________________________________________ 5.C句中有一个词语运用不当,请找出并改正。

____________________________________________________________________________________________ 6.同学们通过查阅书籍,整理搜集了一些有关交友的诗句,请你参与讨论,将空白处内容填写完整。

2024-2025学年酒泉市高二数学上学期期中考试卷附答案解析

2024-2025学年酒泉市高二数学上学期期中考试卷附答案解析

2024-2025学年酒泉市高二数学上学期期中考试卷考试时间120分钟,满分150分一、选择题:本题共8小题,每小题5分,共40分.在每小题给出的四个选项中,只有一项是符合题目要求的.1.已知数列1,3,……,则该数列的第25项是()A.7B.C. D.52.已知数列{}n a 的前n 项和()22n S n =+,则567a a a ++的值为()A.81B.36C.45D.333.在等差数列{}n a 中,67821a a a ++=,则59a a +的值为()A.7B.14C.21D.284.20y -+=的倾斜角为()A.π6B.π 3 C.2π3D.5π65.设n S 为数列{}n a 的前n 项和,若21n n S a =-,则791012a a a a ++的值为()A.8B.4C.14D.186.若点()1,2P -在圆22:0C x y x y m ++++=的外部,则m 的取值一定不是()A.4- B.1- C.0D.27.已知等差数列{}n a 的前n 项和为n S ,10a >,且316=S S ,则下列说法正确的是()A.公差0d >B.190S >C.使0nS <成立的n 的最小值为20D.110a >8.已知,A B 是圆224x y +=上的两个动点,且AB =,点()00,M x y 是线段AB 的中点,则004x y +-的最大值为()A.12B. C.6D.二、选择题:本题共3小题,每小题6分,共18分.在每小题给出的选项中,有多项符合题目要求.全部选对的得6分,部分选对的得部分分,有选错的得0分.9.已知直线l 过点()0,4,40y -+=及x 轴围成等腰三角形,则直线l 的方程可能为()A.40y +-=B.40y -+=C.30y -+=D.3120y -+=10.已知数列{}n a 的前n 项和为n S ,则下列说法中正确的是()A.若2n S n =,则{}n a 是等差数列B.若2nn S =,则{}n a 是等比数列C.若{}n a 是等差数列,则202510132025S a =D.若{}n a 是等比数列,且0n a >,则221212n n nS S S -+⋅>11.已知圆221:20x y x O +-=和圆222:240O x y x y ++-=,则下列结论中正确的是()A.圆1O 与圆2O 相交B.圆1O 与圆2O 的公共弦AB 所在的直线方程为0x y -=C.圆1O 与圆2O 的公共弦AB 的垂直平分线方程为10x y +-=D.若AB 为圆1O 与圆2O 的公共弦,P 为圆1O 上的一个动点,则△PAB面积的最大值为1+三、填空题:本题共3小题,每小题5分,共15分.12.已知直线l 的方向向量为()1,2,且直线l 经过点()2,3-,则直线l 的一般式方程为________.13.圆C :22650x y x +-+=,0,0为圆C 上任意一点,则y x 的最大值为______.14.已知等比数列{}n a 的前n 项和2n n S a =-,N n +∈,则a =________;设数列{}n a 的前n 项和为n T ,若5n T n λ>+对N n +∈恒成立,则实数λ的取值范围为________.四、解答题:本题共5小题,共77分.解答应写出文字说明、证明过程或演算步骤.15.已知直线()1:220l x m y +-=,2:220l mx y +-=,且满足12l l ⊥,垂足为C .(1)求m 的值及点C 的坐标.(2)设直线1l 与x 轴交于点A ,直线2l 与x 轴交于点B ,求ABC V 的外接圆方程.16.设{}n a 是等差数列,{}n b 是各项都为正数的等比数列,且111a b ==,3521a b +=,5313a b +=.(1)求{}n a ,{}n b 的通项公式;(2)求数列{}n n a b +的前n 项和n S .17.已知圆C :2244100x y x y m +----=,点()1,0P .(1)若17m =-,过P 的直线l 与C 相切,求l 的方程;(2)若C 上存在到P 的距离为1的点,求m 的取值范围.18.已知数列{}n a 满足:()*312232222n na a a a n n +++⋅⋅⋅+=∈N ,数列{}nb 满足5012n nb a =+.(1)求数列{}n a 的通项公式;(2)求100n n b b -+的值;(3)求12399b b b b +++⋅⋅⋅+的值.19.已知等差数列{}n a 的前n 项和为n S ,11a =,410S =,数列{}n b 满足13b =,121n n b b +=-.(1)证明:数列{}1n b -是等比数列;(2)证明:2112n n n n S b S b ++⋅>⋅;(3)若()421nn n a c b =-,求数列{}n c 的前n 项和nT 2024-2025学年酒泉市高二数学上学期期中考试卷考试时间120分钟,满分150分一、选择题:本题共8小题,每小题5分,共40分.在每小题给出的四个选项中,只有一项是符合题目要求的.1.已知数列1,3,……,则该数列的第25项是()A.7B.C. D.5【答案】A 【解析】【分析】根据数列的规律及通项可得数列的项.【详解】由已知数列1,,3,……,,……,则数列的第n第257=,故选:A.2.已知数列{}n a 的前n 项和()22n S n =+,则567a a a ++的值为()A.81B.36C.45D.33【答案】C 【解析】【分析】根据数列的前n 项和,可得数列的项,进而可得值.【详解】由已知数列{}n a 的前n 项和()22n S n =+,则75746a a a S S ++=-()()227242=+-+45=,故选:C.3.在等差数列{}n a 中,67821a a a ++=,则59a a +的值为()A.7B.14C.21D.28【答案】B 【解析】【分析】由等差中项的性质计算即可;【详解】因为在等差数列{}n a 中,67821a a a ++=,所以678773217a a a a a ++==⇒=,所以759214a a a ==+,故选:B.4.20y -+=的倾斜角为()A.π6B.π 3 C.2π3D.5π6【答案】B 【解析】【分析】先由直线方程得到斜率,进而可得其倾斜角.【详解】由题意可得直线的斜率为k =设其倾斜角为α,则tan α=,又[)0,πα∈,所以π3α=,故选:B5.设n S 为数列{}n a 的前n 项和,若21n n S a =-,则791012a a a a ++的值为()A.8B.4C.14D.18【答案】D 【解析】【分析】易知数列前n 和求出通项公式,再由等比数列的性质化简求得结果.【详解】当1n =时,11121a S a ==-,∴11a =,当2n ≥时,1121n n S a --=-,则1122n n n n n a S S a a --=-=-,∴12n n a a -=,即数列{}n a 是首项11a =,公比2q =的等比数列,即12n n a -=,∴()()27793210121011181a q a a a a q a q ++===++故选:D.6.若点()1,2P -在圆22:0C x y x y m ++++=的外部,则m 的取值一定不是()A.4-B.1- C.0D.2【答案】D 【解析】【分析】根据点在圆外及方程表示圆求出m 的范围得解.【详解】因为点()1,2P -在圆C :220x y x y m ++++=的外部,所以22(1)2120m -+-++>,解得6m >-,又方程表示圆,则1140m +->,即12m <,所以162m -<<,结合选项可知,m 的取值一定不是2.故选:D.7.已知等差数列{}n a 的前n 项和为n S ,10a >,且316=S S ,则下列说法正确的是()A.公差0d >B.190S >C.使0nS <成立的n 的最小值为20D.110a >【答案】C 【解析】【分析】根据等差数列的通项公式,前n 项和公式,结合条件10a >,逐项进行判断即可求解.【详解】设等差数列{}n a 的公差为d ,由316=S S ,得113316120a d a d +=+,即1131170a d +=,即11090a d a +==,又10a >,所以0d <,所以110a <;故AD 错,()1191910191902a a S a +===,故B 错因为190S =,0d <,所以180S >,200S <,所以0nS <成立的n 的最小值为20.故C 正确.故选:C8.已知,A B 是圆224x y +=上的两个动点,且AB =,点()00,M x y 是线段AB 的中点,则004x y +-的最大值为()A.12 B.C.6D.【答案】C 【解析】【分析】先根据题意求出M 的轨迹方程为222x y +=,设()00,M x y 到直线40x y +-=的距离为d ,由此可得004x y +-=,将问题转化为求圆222x y +=上的点到直线40x y +-=距离的最大值,先求圆心到直线的距离再加半径即可求解.【详解】根据已知有,圆心0,0,半径2r =,因为弦AB =,所以圆心到AB 所在直线的距离d ==又因为M 为AB 的中点,所以有OM =,所以M 的轨迹为圆心为0,0,半径为1r =的圆,M 的轨迹方程为222x y +=;令直线为40x y +-=,则()00,M x y 到直线40x y +-=的距离为d ,则d =,即004x y +-=,所以当d 最大时,004x y +-=也取得最大值,由此可将问题转化为求圆222x y +=上的点到直线40x y +-=距离的最大值的2倍,设圆心0,0到直线的距离为0d ,则0d ==,所以max 0d d =+=所以004x y +-的最大值为6.故选:C二、选择题:本题共3小题,每小题6分,共18分.在每小题给出的选项中,有多项符合题目要求.全部选对的得6分,部分选对的得部分分,有选错的得0分.9.已知直线l 过点()0,4,40y -+=及x 轴围成等腰三角形,则直线l 的方程可能为()A.40y +-=B.40y -+=C.30y -+= D.3120y -+=【答案】AD 【解析】【分析】由题意知直线l 过点()0,4,所以根据直线l 是否存在斜率进行分类讨论,结合等腰三角形等知识,即可求解.【详解】设()0,4为点A ,易知点()0,4A 40y -+=上,直线40y -+=与x轴的交点,03B ⎛⎫- ⎪ ⎪⎝⎭,当直线l 的斜率不存在时,因为直线l 过点()0,4,所以直线l 的方程为0x =,与x 轴的交点为()0,0O ;此时4OA =,3OB =,3AB =,所以AOB V 不是等腰三角形,故直线l 存在斜率;设B 关于y轴的对称点为C ⎫⎪⎭,当直线l 过A ,C 两点时,AB AC =,ABC V 是等腰三角形,同时直线ABπ3,所以ABC V 是等边三角形,所以AC BC =,此时直线l 的方程为144x y +=40y +-=,设直线l 与x 轴相交于点D,如图所示,若AB BD =,则π6ADB ∠=,所以直线AD ,即直线l的斜率为3,此时方程为343y x =+3120y -+=;所以直线l40y +-=3120y -+=故选:AD.10.已知数列{}n a 的前n 项和为n S ,则下列说法中正确的是()A.若2n S n =,则{}n a 是等差数列B.若2nn S =,则{}n a 是等比数列C.若{}n a 是等差数列,则202510132025S a =D.若{}n a 是等比数列,且0n a >,则221212n n nS S S -+⋅>【答案】AC 【解析】【分析】利用n S 和n a 的关系即可判断A ,B 选项;利用等差数列的求和公式即可判断C 选项;通过举例即可判断D 选项.【详解】对于A ,若2n S n =,则当1n >时,121n n n a S S n -=-=-,当1n =时,111a S ==,符合21n a n =-,故21n a n =-,则{}n a 是等差数列,故A 正确;对于B ,若2nn S =,则112a S ==,2212a S S =-=,3324a S S =-=,故a a a a ≠2312,{}n a 不是等比数列,故B 错误;对于C ,若{}n a 是等差数列,则()1202520251013202520252a a S a +==,故C 正确;对于D ,若1n a =,符合{}n a 是等比数列,且0n a >,此时()()22121212141n n S S n n n -+⋅-+==-,2224n S n =,不满足221212n n n S S S -+⋅>,故D 错误.故选:AC11.已知圆221:20x y x O +-=和圆222:240O x y x y ++-=,则下列结论中正确的是()A.圆1O 与圆2O 相交B.圆1O 与圆2O 的公共弦AB 所在的直线方程为0x y -=C.圆1O 与圆2O 的公共弦AB 的垂直平分线方程为10x y +-=D.若AB 为圆1O 与圆2O 的公共弦,P 为圆1O 上的一个动点,则△PAB 面积的最大值为1+【答案】ABC 【解析】【分析】根据圆的一般方程确定圆心、半径,判断1212||,,O O r r 的关系判断A ,两圆方程相减求相交线方程判断B ;应用点斜式写出公共弦AB 的垂直平分线方程判断C ;数形结合判断使△PAB 面积最大时P 点的位置,进而求最大面积判断D.【详解】由题设2121)1:(x O y -+=,则1(1,0)O ,半径11r =,222:(1)(2)5O x y ++-=,则2(1,2)O -,半径2r =,所以12||1,1)O O =,两圆相交,A 对;两圆方程相减,得公共弦AB 所在直线为0x y -=,B 对;公共弦AB 的垂直平分线方程为20(1)(1)11y x x -=⋅-=----,即10x y +-=,C 对;如下图,若O 与B 重合,而1O 到0x y -=的距离d =,且||2AB ==,要使△PAB 面积最大,只需P 到AB 的距离最远为11d r +=,所以最大面积为1121)22+=,D 错.故选:ABC三、填空题:本题共3小题,每小题5分,共15分.12.已知直线l 的方向向量为()1,2,且直线l 经过点()2,3-,则直线l 的一般式方程为________.【答案】270x y --=【解析】【分析】根据点斜式求得直线方程,并化为一般式.【详解】直线l 的方向向量为()1,2,所以直线l 的斜率为2,所以直线方程为()32224,270y x x x y +=-=---=.故答案为:270x y --=13.圆C :22650x y x +-+=,0,0为圆C 上任意一点,则0y x 的最大值为______.【答案】5【解析】【分析】设0y k x =,则直线00y kx =与圆有公共点,联立方程消元后,利用判别式即可得解.【详解】设y k x =,则00y kx =,联立0022000650y kx x y x =⎧⎨+-+=⎩,消元得()22001650k x x +-+=,由()2Δ362010k=-+≥,解得252555k -≤≤,所以00y x 的最大值为5.故答案为:514.已知等比数列{}n a 的前n 项和2n n S a =-,N n +∈,则a =________;设数列{}n a 的前n 项和为n T ,若5n T n λ>+对N n +∈恒成立,则实数λ的取值范围为________.【答案】①.1②.9λ<-【解析】【分析】根据等比数列的性质,结合2n n S a =-,有(2)(21)2n n a a --=-,即可求a 值,进而有12n n a -=即(1)l 2n n =-,结合5n T n λ>+对N n +∈恒成立求λ的范围即可.【详解】由等比数列的前n 项和2n n S a =-知,1q ≠,所以1(1)21n n n a q S a q-==--,所以2q =,而112a S a ==-,2q =,∴(2)(21)2n n a a --=-,即1a =,由上知:12nn a -=,则(1)l 2n n =-,∴==2−>5+,即226(3)9,N n n n n λ+<-=--∈,当3n =时,2(3)9,N n n +--∈的最小值为9-,所以9λ<-.故答案为:1;9λ<-四、解答题:本题共5小题,共77分.解答应写出文字说明、证明过程或演算步骤.15.已知直线()1:220l x m y +-=,2:220l mx y +-=,且满足12l l ⊥,垂足为C .(1)求m 的值及点C 的坐标.(2)设直线1l 与x 轴交于点A ,直线2l 与x 轴交于点B ,求ABC V 的外接圆方程.【答案】(1)12m =;()1,1C .(2)()2211x y -+=【解析】【分析】(1)根据题意,求得两直线的斜率,结合121k k ×=-,求得12m =,得出直线的方程,联立方程组,求得交点坐标.(2)由(1)中的直线方程,求得()0,0A ,()2,0B ,得到ABC V 的外接圆是以AB 为直径的圆,求得圆心坐标和半径,即可求解.【小问1详解】解:显然1m ≠,可得1122k m =--,22k m =-,由12l l ⊥,可得121k k ×=-,即()12122m m ⎛⎫-⋅-=- ⎪-⎝⎭,解得12m =,所以直线1l :0x y -=,直线2l :20x y +-=,联立方程组020x y x y -=⎧⎨+-=⎩,解得11x y =⎧⎨=⎩,所以点()1,1C .【小问2详解】解:由直线1l :0x y -=,直线2l :20x y +-=,可得()0,0A ,()2,0B ,所以ABC V 的外接圆是以AB 为直径的圆,可得圆心1,0,半径112r AB ==,所以ABC V 的外接圆方程是()2211x y -+=.16.设{}n a 是等差数列,{}n b 是各项都为正数的等比数列,且111a b ==,3521a b +=,5313a b +=.(1)求{}n a ,{}n b 的通项公式;(2)求数列{}n n a b +的前n 项和n S .【答案】(1)21n a n =-,12n n b -=;(2)221nn S n =+-.【解析】【分析】(1)设公差为d ,公比为q ()0q >,根据已知列出方程可求出2=d ,2q =,代入通项公式,即可求出结果;(2)分组求和,分别求出{}n a 和{}n b 的前n 项和,加起来即可求出结果.【小问1详解】设{}n a 公差为d ,{}n b 公比为q ()0q >,因为111a b ==,则由3521a b +=可得,41221d q ++=,即4202q d =-,由5313a b +=可得,21413d q ++=,解得2124q d =-,则3d <.所以有()24202124q d d =-=-,整理可得2847620d d -+=,解得2=d 或3138d =>(舍去).所以2=d ,则212424q =-⨯=,解得2q =±(舍去负值),所以2q =.所以有()12121n a n n =+-=-,11122n n n b --=⨯=.【小问2详解】由(1)知,21n a n =-,12n n b -=,则1212n n n a b n -+=-+.()()()1122n n n S a b a b a b =++++++L 1212n n a a a b b b =+++++++ ()()112112212n n n n ⨯--=⨯++-221n n =+-.17.已知圆C :2244100x y x y m +----=,点()1,0P .(1)若17m =-,过P 的直线l 与C 相切,求l 的方程;(2)若C 上存在到P 的距离为1的点,求m 的取值范围.【答案】(1)1x =或3430x y --=(2)1212⎡---+⎣【解析】【分析】(1)对直线l 的斜率是否存在讨论,根据直线与圆的位置关系列式运算;(2)要使圆C 上存在到点P 的距离为1的点,则圆心C 到()1,0P 的距离d 满足,11180r d r m -≤≤+⎧⎨+>⎩,运算得解.【小问1详解】因为17m =-,所以圆C 的方程为()()22221x y -+-=①当l 的斜率不存在时,l 的方程为1x =,与圆C 相切,符合题意;②当l 的斜率存在时,设l 的方程为()1y k x =-,即kx y k 0--=,圆心C 到l 的距离1d =,解得34k =,则l 的方程为()314y x =-,即3430x y --=,综上可得,l 的方程为1x =或3430x y --=.【小问2详解】由题意可得圆C :()()222218x y m -+-=+,圆心()2,2C ,半径r =,则圆心C 到()1,0P 的距离d ==要使C 上存在到P 的距离为1的点,则11180r d r m -≤≤+⎧⎨+>⎩,即11180m -≤+>⎪⎩,解得1212m ---+≤≤,所以m 的取值范围为1212⎡---+⎣.18.已知数列{}n a 满足:()*312232222n n a a a a n n +++⋅⋅⋅+=∈N ,数列{}n b 满足5012n n b a =+.(1)求数列{}n a 的通项公式;(2)求100n n b b -+的值;(3)求12399b b b b +++⋅⋅⋅+的值.【答案】(1)2nn a =(2)5012(3)51992【解析】【分析】(1)根据题意,当2n ≥时,可得311223112222n n a a a a n --+++⋅⋅⋅+=-,两式相减,求得2n n a =,再由1n =,得到12a =,即可求得数列的通项公式.(2)由(1)得50122n n b =+,结合指数幂的运算法则,即可求得100n n b b -+的值;.(3)由(2)知1005012n n b b -+=,结合倒序相加法,即可求解.【小问1详解】由数列满足:()*312232222n n a a a a n n +++⋅⋅⋅+=∈N ,当2n ≥时,可得311223112222n n a a a a n --+++⋅⋅⋅+=-,两式相减,可得12n n a=,所以2n n a =,当1n =,可得112a =,所以12a =,适合上式,所以数列的通项公式为2n n a =.【小问2详解】由数列满足505011222n n n b a ==++,则100100505010050502222211122222nn n nn nn b b --+++++++==⋅5050505505005022+212(2+2)(222)21+22n n n n n =+==+.【小问3详解】由(2)知1005012n n b b -+=,可得123995050129509111222222b b b b +++⋅⋅⋅+++++++=,则999899997150580510211122222b b b b +++⋅⋅⋅++++++=+ ,两式相加可得123995099(2)2b b b b +++⋅⋅=⋅+,所以1239951992b b b b +++⋅⋅⋅=+.19.已知等差数列{}n a 的前n 项和为n S ,11a =,410S =,数列{}n b 满足13b =,121n n b b +=-.(1)证明:数列{}1n b -是等比数列;(2)证明:2112n n n n S b S b ++⋅>⋅;(3)若()421nn n a c b =-,求数列{}n c 的前n 项和n T .【答案】(1)证明见解析;(2)证明见解析;(3)11634994n n n T -+=-⋅.【解析】【分析】(1)由递推关系得112(1)n n b b +-=-,结合等比数列定义证明;(2)由等差数列前n 项和求基本量,结合(1)结论,写出等差、等比数列通项公式、前n 项和公式,再应用作差法比较大小即可;(3)应用错位相减、等比数列前n 项和求结果.【小问1详解】由题设112112(1)n n n n b b b b ++=-⇒-=-,而112b -=,所以{}1n b -是首项、公比均为2的等比数列,得证.【小问2详解】令数列{}n a 的公差为d ,而414646101S a d d d =+=+=⇒=,所以(1)(1)22n n n n n S n -+=+=,又12nn b -=,则2111(21)()222(1)22222n n n n n n n S b n n b n S ++++++=⨯-⨯⋅⋅-⨯(21)(1)22(1)2n n n n n n =++⨯-+⨯(1)20n n =+⨯>恒成立,所以2112n n n n S b S b ++⋅>⋅,得证.【小问3详解】由上知n a n =,则()4214441nn n n n a n nc b -===-,则21231444n n n T -=++++L ,即2311231444444n n n T n n --=+++++ ,所以2311131111411444444414n n n n n T n n --=+++++-=-- ,即11634994n n n T -+=-⋅。

福建省莆田市秀屿区莆田第十中学2023-2024学年高一上学期期中考试英语(试卷)

福建省莆田市秀屿区莆田第十中学2023-2024学年高一上学期期中考试英语(试卷)

2023-2024 学年莆田十中高一上期中考试卷(时间:120 分钟满分150)第一部分听力(略)第二部分阅读(共两节,满分50 分)第一节(共15小题;每小题2.5 分,满分37.5 分)阅读下列短文,从每题所给的A 、B 、C 和D 四个选项中,选出最佳选项。

AFour Destinations for Electric-bike Tours Across CanadaBanff by e-bikeWhite Mountain Adventures and BanffCycle both launched guided e-bike tours of Canada's first national park this summer.The former's offerings include a50-kilometre there-and-back ride along the Bow Valley Park way and a 50-km return ride along the car-free Rocky Mountain Legacy Trail.BanffCycle,meanwhile,adds a three-hour"Banff and Bow Valley"guided trip to the mix.Fat-biking in YukonThis new ride from the luxurious Mount Logan EcoLodge on the Alaska Highway near Haines Junction provides an exception to the rule that Canadian e-bike tours are unavailable in winter.Equipped with oversized tires to allow riding on snow and other unstable surfaces, the electric fat bikes can be booked for two hour guided tours that explore the wilderness bordering Kluane National Park.Sipping and e-cycling in NiagaraNiagara Cycling Tours hosts group outings of at least four e-bike riders that range in length from 65 to more than 110kilometres.The offerings include a two-day"Niagara Introductory Ride,"which can be customized to visit local attractions,and a new "Beers and Bikes"tour, which rides between more than a dozen craft breweries(啤酒厂).Gardens and Gouda on Vancouver IslandBased in pretty Qualicum Beach, the new Electric Bike Co.offers a three-hour "Home and Garden Tour" highlighting high-design private houses and seaside flowers;and a four-to-five hour ride and ferry(轮渡) voyage to Hornby Island , home of the Helliwell and Tribune Bay provincial parks.21. Where is this text probably taken from?A. A sports poster.B. A travel brochure.C. An academic article.D. A chemical paper.22. Which e-bike tour is great to experience in winter?A. Banff by e-bike.B. Fat-biking in Yukon.C.Sipping and e-cycling in Niagara.D. Gardens and Gouda on Vancouver Island.23. What can you enjoy when e-cycling in Niagara?A. Tasty beer.B. High-design houses.C. Seaside flowers.D. Mountain scenery.BDo you remember the name of your kindergarten teacher? I do, mine.Her name was Mrs.White. And I remember thinking she must be some older relation of Walt Disney's Snow White, because she had the samebright blue eyes, short dark hair, red lips and fair skin.I don't remember much about what we learned in her class, but my mother once told me that we used to writea lot. And I would bring back what I wrote and she would look at it and see there were so many mistake so one day when she went in to meet Mrs.White for one of those parent-teacher meetings, she asked her why she didn't red-pencil my wrong spellings of words or point out grammatical errors?And my mother says Mrs.White said -The children are just beginning to get excited about using words, about forming sentences.I don't want to kill that passion(激情)with red ink.Spelling and grammar can wait.The wonder of words won't...And maybe she didn't say it exactly like that. It was a long time ago. And what my mother gave me was the main idea of what she could remember. I added the rest.I grew up learning to use words with loving confidence like that.I realize that if Mrs. White had used her red pencil more precisely(精确地) I probably wouldn't be telling you about this now. I look back now and think she must have been a rather good teacher. And thanks to Mrs. White, I had no worries about writing what I meant even if I couldn't quite spell it out.24. What used to make the author's mother concerned?A. His poor memory in writing class.B. His terrible relationship with his teacher.C. His bad performance in writing.D. His teacher's not pointing out the mistakes.25. Why did Mrs.White never correct the students' spelling and grammatical mistakes?A. Because she was not willing to use a red pencil.B. Because she thought the mistakes could wait to be corrected.C. Because she didn't want to discourage the students.D. Because she believed children were just starting to use words.26. Which of the following best describes Mrs.White as a teacher?A. Humorous.B. Demanding.C. Precise.D. Inspiring.27. What does the author want to express in the last paragraph?A. Using a red pencil weakens the writing ability.B. A good teacher influences students a lot.C. Teachers should also learn from students.D. People who make no mistakes make nothing.CWooden houses surrounded by a thick forest, classical music playing softly in the background, a very special cafe, three meals a day and several outdoor activity areas. This sounds like a dream vacation arrangement (安排). But this is not a place for people. It’s for cats in the province of Samsun, Türkiye.Kedi Kasabas, or"cat town",is one interesting place in the country, a place where cats can experience what real comfort is!The town, which covers an area of around 20 acres,is run by the local city and most admitted guests have a hard backstory."All cats here are homeless and usually go through sufferings before being brought here. They are either injured or mentally suffer. We treat them and put them back into the town. The environment here is really beautiful for them," Faruk Kan, a Kedi Kasabas vet,said.Kan is not the only vet working at the shelter. There’s a whole team looking after the cats and making sure all their needs are met.The place even has a special area for sick or injured cats, where they receive personalized (个性化的) treatment.There are currently150 animals living in"cat town",and the number keeps rising.There are wooden houses where they can rest,and also houses designed for socializing.During the winter they are provided with heated accommodation, so feeling convenient and warm is a sure thing for these furry creatures.The love for cats seems to be a Turkish favourite. Istanbul is known for being home to several hundred thousand cats. There,people take care of street cats like kings.The four-legged friends are fed and kept healthy and they have already become part of the city view.Even though cats may have a happy life outdoors in the forest or wandering around in the city streets, there’s nothing like having a stable (稳定的) home, lying next to a human friend.28. What can be learned about"cat town"?A. It is quite difficult to reach.B. It is peaceful and comfortable.C. It is very expensive to run.D. It serves special coffee to visitors.29. What does the underlined word "guests" in paragraph 3 refer to?A. Cats.B. Visitors.C. Workers.D. Volunteers.30. What do we know about the cats in "cat town"?A. They are thrown by their owners.B. They came from pet lovers.C. They are friendly to humans.D. They used to suffer a lot.31. Which does the author think us the best place for a cat probably?A. The forest.B. The city streets.C. A human’s home.D. A pet hospital.DA group of researchers have developed a new material which is soft but very strong.It can be worn and washed like ordinary clothing and could finally turn sports clothes into smart "wearables".The so-called "carbon nanotube threads"( 碳纳米管线)can be used to measure heart rate to test heart conditions.But instead of having to be stuck on the skin, they can be fixed on a T-shirt and worn like usual athletic wear.The researchers say the threads can comfortably move with the wearer,and be washed and worn repeatedly without breaking down.Though going into production for customers is still a long way off,the material could finally help replace some medical facilities,such as the heart-rate monitoring machines and watches,in addition to other possible uses.For the latest study, researchers worked with a rope-maker to make the threads together into a material similar to ordinary thread that could be sewn(缝纫) into athletic clothes.The resulting"smart"shirt provides "soft, wearable,dry sensors for continuous" heart-rate monitoring, the study states.With some improvement, the clothes with these carbon nanotube threads could be able to track other human body life signs, according to the researchers.The"smart"shirts aren't entirely without wires(电线), however.one example shows the nanotube in the shirt feeding testing results to wires on the bottom that transmit the information through Bluetooth technology to a computer."The threadlike material—thin enough to run through a sewing machine—is not only soft and comfortable to the touch, but also so strong that you can build a power line out of it," said Dewy, a member of the research team. "Nothing else behaves like this promising material."32. What is the new material expected to do ?A. Make a new style of sportswear.B. Take the place of traditional clothes.C. Provide measurement for heartbeats.D. Help determine the type of an illness.33. What does the underlined word "transmit" mean in paragraph 4?A.Send.B.Connect.C. Add.D. Track.34. What can we learn about the new material?A. It'll cause a waste of resources.B. It has gained a large sales market.C. It has a bright future of development.D. It'll improve the function of the heart.35. What is the best title for the text?A.Scientists Are Studying Human Body Life SignsB. Advanced Medical Facilities Are Put into Wide UseC.Smart Wearables Are Well Received Among AthletesD. Carbon Nanotube Threads Are Created to Test Heart Rate第二节(共5小题;每小题2.5 分,满分12.5 分)读下面短文,从短文后的选项中选出能填入空白处的最佳选项。

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(2)18 里面有几个 3?
(3)把 9 平均分成 3 份,每份是几?
(4)被减数是 36,减数是 6,差是多少?
(5)一个乘数是 5,另一个乘数是 4,积是多少?
(6)12 除以 6 等于多少?
(7)两个乘数都是 4,积是多少?
(8)40 是什么数的 5 倍?
五、应用题。(24 分)
学无 止 境
1.分铅笔(12 分)
(1)一共有多少枝铅笔?绿色圃中 = ()
(2)如果每 3 枝捆成 1 扎,可以捆多少捆? = ()
(3)如果每个小朋友分 4 枝,可以分给多少个小朋友? = ()
(4)如果平均分给 8 个小朋友,每人分多少枝? = ()
2.购物(10 分)
胶水/3 元 笔记本/ 4 元 铅笔盒/18 元 铅笔刀/2 元
2012 秋学期二年级期中试卷 数学
绿色
考试时间:100 分钟
学无 止 境
二、选择题。(12 分) 绿色圃中 1. 站在不同的位置看放在桌上的盒子,最多能看到(
)个面。
学号:
姓名 :
题目


得分




一、 填空题。(1-4 小题每空 0.5 分,第 5 小题每空 1 分,共 24 分)
1.( )六十二
班级:
计算题。(26 分)
三、
绿色圃中小
四、1.口算。(10 分) 绿色圃中小
4+8=
12÷4=
5×2=
4÷=
6×5=
24÷6=
3×2=
15÷5=
2. 列式计算。(16 分) 绿色圃中小学教
(1)5 个 6 相加得多少?
12÷2= 25÷5= 9+5= 6+6= 6÷1=
6-6= 30÷5= 6×4= 20÷5= 1×1=
(2)2×6 表示( )个( )相加,或( )个( )相加,
用口诀(
)计算。
(3)16÷4= ,读作( )除以( )等于( )。
按规律填数。
4.
绿色圃
4. 27、24、21、( )、( )、( )。
16、20、24、( )、( )、( )。
5.在 里填上“>”、“<”、“=”。 绿
12÷3 4
8 30÷5
2+2 2×2
25÷5 5
24-6 4
3+3 9
①5
②4
③3
2. 8 是 4 的( )倍。
①32
②12
③2
3. 16 根小棒,平均分成 2 份,每份是( )根。
①8
②2
③不确定
4. 15÷2 的商和余数是( )。
①6……3
②5……5
③7……1
5. 家里要来 7 位客人,小方得准备( )双筷子。
①7
②2
4. 在 25÷5=5 中,25 叫做被减数。………………………… ( )
5. 把 10 朵花平均插在两个瓶子里,一瓶 4 朵,一瓶 6 朵。……( )
6.8 是 4 的几倍?正确的算式是 8×4.…………………………… ( )
7.△×2=△+△。……………………………………………… ( )
8.24÷3=8 和 2×4=8 的口诀相同。……………………………… ( )
四( )二十
五( )二十五
( )四十二
四( )二十四 ( )五一十

( )五十五
二( )得八
三( )十八
( )四十二 ( )二得二
( )三得九
2.( )÷4=4 30÷( )=5 ( )÷2=1
( )÷5=6 24÷( )=6
1÷( )=1
线
3.(1)5 乘 3 写成算式是(
),积是( ),再加 25 得( )。
(1)买
7
瓶胶水要多少钱? 绿色
=
(2)1 个铅笔盒的价钱是一瓶胶水的几倍?
=
(3)根据上面的价格,请你再提出一个数学问题,并解答。
③14
6.积是 10 的算式是( )
①5+5
②15-5
③2×5
三、判断题。(16 分) 绿色
1. 三七二十二。………………………………………………… ( )
2. 5+5+5+5 改写成乘法算式是 5×4。 ………………………… ( )
3. 16 个苹果,平均放在 4 个盘子里,每盘放 4 个。 ………… ( )
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