七年级下学期期末测试(2)
人教版数学七年级第二学期期末考试试卷及答案二
人教版数学七年级第二学期期末考试试卷及答案一.选择题(共16小题)1.下列调查方式中最适合的是()A.要了解一批节能灯的使用寿命,采用普查的方式B.为保证“神舟9号”的成功发射,对其零部件进行检查采用抽样调查方式C.对乘坐某班次客车的乘客进行安检,采用抽查的方式D.调查本班同学的视力,采用普查的方式2.共享单车为人们带来了极大便利,有效缓解了出行“最后一公里”问题,而且经济环保.2019年全国共享单车投放数量达23 000 000辆.将23 000 000用科学记数法表示为()A.23×106B.2.3×107C.2.3×106D.0.23×1083.已知是方程mx﹣y=2的解,则m的值是()A.﹣1B.﹣C.1D.54.今年我市有4万名学生参加中考,为了了解这些考生的数学成绩,从中抽取2000名考生的数学成绩进行统计分析.在这个问题中,下列说法正确的是()A.这4万名考生的全体是总体B.每个考生是个体C.2000名考生是总体的一个样本D.样本容量是20005.下列运算错误的是()A.x2•x3=x5B.(x3)2=x6C.a+2a=3a D.a8÷a2=a46.利用如图中图形面积关系可以解释的公式是()A.(a+b)2=a2+2ab+b2B.(a﹣b)2=a2﹣2ab+b2C.(a+b)(a﹣b)=a2﹣b2D.2(a+b)=2a+2b7.社会主义核心价值观知识竞赛成绩结果统计如下表:成绩在91~100分的为优胜者,则优胜者的频率是()分段数(分)61~7071~8081~9091~100人数(人)1192218A.35%B.30%C.20%D.10%8.二元一次方程x+2y=11的正整数解的个数是()A.3个B.4个C.5个D.6个9.在﹣12,(x﹣3.14)0,2﹣1,0这四个数中,最小的数是()A.﹣12B.(x﹣3.14)0C.2﹣1D.010.下列运算中正确的是()A.(x+2)(x﹣2)=x2﹣2B.(﹣x﹣y)2=x2+2xy+y2C.(a+b)2=a2+b2D.(a﹣2)(a+3)=a2﹣611.若(x+5)(2x﹣3)=2x2+mx﹣15,则()A.m=7B.m=﹣3C.m=﹣7D.m=1012.已知x+y=5,xy=6,则x2+y2的值是()A.1B.13C.17D.2513.某班共有学生49人.一天,该班某男生因事请假,当天的男生人数恰为女生人数的一半.若设该班男生人数为x,女生人数为y,则下列方程组中,能正确计算出x、y的是()A.B.C.D.14.如图,在长a,宽b的一个长方形的场地的两边修一条公路,若公路宽为x,则余下阴影部分的面积是()A.ab﹣ax﹣bx+x2B.ab﹣ax﹣bx﹣x2C.ab﹣ax﹣bx+2x2D.ab﹣ax﹣bx﹣2x215.在“幻方拓展课程”探索中,小明在如图的3×3方格内填入了一些表示数的代数式,若图中各行、各列及对角线上的三个数之和都相等,则x﹣y=()A.2B.4C.6D.816.现有如图所示的卡片若干张,其中A类、B类为正方形卡片,C类为长方形卡片,若用此三类卡片拼成一个长为a+2b,宽为a+b的大长方形,则需要C类卡片张数为()A.1B.2C.3D.4二.填空题(共4小题)17.把方程2x﹣y=1化为用含x的代数式表示y的形式:y=.18.计算:199×201=.19.已知10x=2,10y=5,则10x+y=.20.如图,在长为5,宽为4的矩形中,有形状、大小完全相同的5个小矩形,则图中阴影部分的面积为.三.解答题(共8小题)21.(1);(2);22.(1)a5•a3÷a2;(2)(﹣2m)3﹣(m3)2;(3)(﹣2a2b)•(abc);23.(1)5x(2x+1)﹣(x+3)(5x﹣1);(2)(π﹣2020)0+()﹣2﹣2101×()100;24.(a+2)2+3(a+1)(a﹣1),其中a=﹣1小明的解法如下:解:=a2+2a+4+3a2﹣3=……根据小明的解法解答下列问题:(1)小明的解答过程里在标出①②③的几处中出现错误的在第步;(2)请你借鉴小明的解题方法,写出此题的正确解答过程,并求出当x=﹣1时的值.25.疫情期间,我校“停课不停学”,开展云视讯网上教学,为了解七年级学生课堂发言情况,随机抽取年级部分学生,对他们某天在课堂上发言的次数进行了统计,其结果如表,并绘制了如图所示的两幅不完整的统计图,已知B、E两组发言人数的比为5:2,请结合图中相关数据回答下列问题:发言次数nA0≤n<3B3≤n<6C6≤n<9D9≤n<12E12≤n<15F15≤n<18(1)E组人数为人;(2)被调查的学生人数为人,A组人数为人,并补全频数分布直方图;(3)求出扇形统计图中,“B”所对应的圆心角的度数:(4)七年级共有学生1500人,请估计全年级在这天里发言次数不少于12次的人数.26.我校为做好高三年级复课工作,积极准备防疫物资,计划从新兴药房购买消毒液和酒精共40瓶,在获知北国超市有促销活动后,决定从北国超市购买这些物品.已知消毒液和酒精在这两家店的售价如表所示,且在新兴药房购买这些物品需花费900元.品名商店消毒液(元/瓶)酒精(元/瓶)新兴药房2420北国超市2018(1)求出需要购买的消毒液和酒精的数量分别是多少瓶?(2)求从北国超市购买这些物品可以节省多少元?27.观察下列关于自然数的等式:1×3=22﹣1,①2×4=32﹣1,②3×5=42﹣1,③4×6=52﹣1,④5×7=62﹣1,⑤根据上述规律解决下列问题:(1)用上面的形式填出第⑥式和第⑦式:⑥6×8=2﹣1 ⑦×=2﹣1(2)写出你猜想的第n个等式(用含n的式子表示);(3)请你验证猜想的正确性.28.【探究】如图①,从边长为a的大正方形中剪掉一个边长为b的小正方形,将阴影部分沿虚线剪开,拼成图②的长方形.(1)请你分别表示出这两个图形中阴影部分的面积:图①图②;(2)比较两图的阴影部分面积,可以得到乘法公式:(用字母a、b表示);【应用】请应用这个公式完成下列各题:①已知2m﹣n=3,2m+n=4,则4m2﹣n2的值为;②计算:(x﹣3)(x+3)(x2+9);【拓展】计算(2+1)(22+1)(24+1)(28+1)…(232+1)的结果为.参考答案与试题解析一.选择题(共16小题)1.下列调查方式中最适合的是()A.要了解一批节能灯的使用寿命,采用普查的方式B.为保证“神舟9号”的成功发射,对其零部件进行检查采用抽样调查方式C.对乘坐某班次客车的乘客进行安检,采用抽查的方式D.调查本班同学的视力,采用普查的方式【分析】调查方式的选择需要将普查的局限性和抽样调查的必要性结合起来,具体问题具体分析,普查结果准确,所以在要求精确、难度相对不大,实验无破坏性的情况下应选择普查方式,当考查的对象很多或考查会给被调查对象带来损伤破坏,以及考查经费和时间都非常有限时,普查就受到限制,这时就应选择抽样调查.【解答】解:A.要了解一批节能灯的使用寿命适合抽样调查,原调查方式不合适;B.为保证“神舟9号”的成功发射,对其零部件进行检查采用全面调查,原调查方式不合适;C.对乘坐某班次客车的乘客进行安检,采用普查的方式,原调查方式不合适;D.调查本班同学的视力,采用普查的方式,原调查方式合适;故选:D.2.共享单车为人们带来了极大便利,有效缓解了出行“最后一公里”问题,而且经济环保.2019年全国共享单车投放数量达23 000 000辆.将23 000 000用科学记数法表示为()A.23×106B.2.3×107C.2.3×106D.0.23×108【分析】科学记数法的表示形式为a×10n的形式,其中1≤|a|<10,n为整数.确定n的值时,要看把原数变成a时,小数点移动了多少位,n的绝对值与小数点移动的位数相同.当数绝对值>10时,n是正数;当原数的绝对值<1时,n是负数.【解答】解:23 000 000=2.3×107.故选:B.3.已知是方程mx﹣y=2的解,则m的值是()A.﹣1B.﹣C.1D.5【分析】直接利用二元一次方程的解法得出答案.【解答】解:∵是方程mx﹣y=2的解,则3m﹣1=2,解得:m=1.故选:C.4.今年我市有4万名学生参加中考,为了了解这些考生的数学成绩,从中抽取2000名考生的数学成绩进行统计分析.在这个问题中,下列说法正确的是()A.这4万名考生的全体是总体B.每个考生是个体C.2000名考生是总体的一个样本D.样本容量是2000【分析】总体是指考查的对象的全体,个体是总体中的每一个考查的对象,样本是总体中所抽取的一部分个体,而样本容量则是指样本中个体的数目.我们在区分总体、个体、样本、样本容量,这四个概念时,首先找出考查的对象,从而找出总体、个体.再根据被收集数据的这一部分对象找出样本,最后再根据样本确定出样本容量.【解答】解:A.这4万名考生的数学成绩是总体,此选项错误;B.每个考生的数学成绩是个体,此选项错误;C.2000名考生的数学成绩是总体的一个样本,此选项错误;D.样本容量是2000,此选项正确;故选:D.5.下列运算错误的是()A.x2•x3=x5B.(x3)2=x6C.a+2a=3a D.a8÷a2=a4【分析】直接利用同底数幂的乘除运算法则以及幂的乘方运算法则、合并同类项法则分别计算得出答案.【解答】解:A、x2•x3=x5,原题计算正确,不合题意;B、(x3)2=x6,原题计算正确,不合题意;C、a+2a=3a,原题计算正确,不合题意;D、a8÷a2=a6,原题计算错误,符合题意.故选:D.6.利用如图中图形面积关系可以解释的公式是()A.(a+b)2=a2+2ab+b2B.(a﹣b)2=a2﹣2ab+b2C.(a+b)(a﹣b)=a2﹣b2D.2(a+b)=2a+2b【分析】由大正方形面积=两个小正方形面积+2个长方形面积,可得(a+b)2=a2+2ab+b2【解答】解:∵大正方形面积=两个小正方形面积+2个长方形面积∴(a+b)2=a2+2ab+b2故选:A.7.社会主义核心价值观知识竞赛成绩结果统计如下表:成绩在91~100分的为优胜者,则优胜者的频率是()分段数(分)61~7071~8081~9091~100人数(人)1192218A.35%B.30%C.20%D.10%【分析】首先根据表格,计算其总人数;再根据频率=频数÷总数进行计算.【解答】解:优胜者的频率是18÷(1+19+22+18)=0.3=30%,故选:B.8.二元一次方程x+2y=11的正整数解的个数是()A.3个B.4个C.5个D.6个【分析】将x看做已知数求出y,找出正整数解即可.【解答】解:∵x+2y=11,∴y=,则:当x=1时,y=5;当x=3时,y=4;当x=5时,y=3;当x=7时,y=2;当x=9时,y=1;故选:C.9.在﹣12,(x﹣3.14)0,2﹣1,0这四个数中,最小的数是()A.﹣12B.(x﹣3.14)0C.2﹣1D.0【分析】直接利用负整数指数幂的性质以及有理数的乘方运算法则分别化简得出答案.【解答】解:∵﹣12=﹣1,(x﹣3.14)0=1,2﹣1=,0,∴最小的数是:﹣12.故选:A.10.下列运算中正确的是()A.(x+2)(x﹣2)=x2﹣2B.(﹣x﹣y)2=x2+2xy+y2C.(a+b)2=a2+b2D.(a﹣2)(a+3)=a2﹣6【分析】直接利用乘法公式结合整式的混合运算法则分别计算得出答案.【解答】解:A、(x+2)(x﹣2)=x2﹣4,故原题计算错误;B、(﹣x﹣y)2=x2+2xy+y2,故原题计算正确;C、(a+b)2=a2+2ab+b2,故原题计算错误;D、(a﹣2)(a+3)=a2+a﹣6,故原题计算错误;故选:B.11.若(x+5)(2x﹣3)=2x2+mx﹣15,则()A.m=7B.m=﹣3C.m=﹣7D.m=10【分析】先用一个多项式的每一项乘以另一个多项式的每一项,再把所得的积相加即可得出答案.【解答】解:∵(x+5)(2x﹣3)=2x2﹣3x+10x﹣15=2x2+7x﹣15,又∵(x+5)(2x﹣3)=2x2+mx﹣15,∴m=7;故选:A.12.已知x+y=5,xy=6,则x2+y2的值是()A.1B.13C.17D.25【分析】将x+y=5两边平方,利用完全平方公式化简,把xy的值代入计算,即可求出所求式子的值.【解答】解:将x+y=5两边平方得:(x+y)2=x2+2xy+y2=25,将xy=6代入得:x2+12+y2=25,则x2+y2=13.故选:B.13.某班共有学生49人.一天,该班某男生因事请假,当天的男生人数恰为女生人数的一半.若设该班男生人数为x,女生人数为y,则下列方程组中,能正确计算出x、y的是()A.B.C.D.【分析】此题中的等量关系有:①该班一男生请假后,男生人数恰为女生人数的一半;②男生人数+女生人数=49.【解答】解:根据该班一男生请假后,男生人数恰为女生人数的一半,得x﹣1=y,即y=2(x﹣1);根据某班共有学生49人,得x+y=49.列方程组为.故选:D.14.如图,在长a,宽b的一个长方形的场地的两边修一条公路,若公路宽为x,则余下阴影部分的面积是()A.ab﹣ax﹣bx+x2B.ab﹣ax﹣bx﹣x2C.ab﹣ax﹣bx+2x2D.ab﹣ax﹣bx﹣2x2【分析】表示出阴影部分的长与宽,计算即可得到面积.【解答】解:根据题意得:(a﹣x)(b﹣x)=ab﹣ax﹣bx+x2,故选:A.15.在“幻方拓展课程”探索中,小明在如图的3×3方格内填入了一些表示数的代数式,若图中各行、各列及对角线上的三个数之和都相等,则x﹣y=()A.2B.4C.6D.8【分析】由图中各行、各列及对角线上的三个数之和都相等,即可得出关于x,y的二元一次方程组,解之即可得出x,y的值,再将其代入(x﹣y)中即可求出结论.【解答】解:依题意得:,解得:,∴x﹣y=8﹣2=6.故选:C.16.现有如图所示的卡片若干张,其中A类、B类为正方形卡片,C类为长方形卡片,若用此三类卡片拼成一个长为a+2b,宽为a+b的大长方形,则需要C类卡片张数为()A.1B.2C.3D.4【分析】表示出长方形的面积,利用多项式乘以多项式法则计算,即可确定出需要C类卡片的张数.【解答】解:(a+2b)(a+b)=a2+ab+2ab+2b2=a2+3ab+2b2,则需要C类卡片张数为3.故选:C.二.填空题(共4小题)17.把方程2x﹣y=1化为用含x的代数式表示y的形式:y=2x﹣1.【分析】把x看做已知数求出y即可.【解答】解:方程2x﹣y=1,移项得:﹣y=1﹣2x,解得:y=2x﹣1.故答案为:2x﹣1.18.计算:199×201=39999.【分析】先变形为原式=(200﹣1)×(200+1),然后利用平方差公式计算.【解答】解:原式=(200﹣1)×(200+1)=2002﹣12=40000﹣1=39999.故答案为39999.19.已知10x=2,10y=5,则10x+y=10.【分析】根据同底数幂的乘法法则计算即可.【解答】解:∵10x=2,10y=5,∴10x+y=10x•10y=2×5=10.故答案为:1020.如图,在长为5,宽为4的矩形中,有形状、大小完全相同的5个小矩形,则图中阴影部分的面积为5.【分析】设小矩形的长为x,宽为y,根据矩形的对边相等已经大矩形的长为5,即可得出关于x,y的二元一次方程组,解之即可得出x,y的值,再将其代入(5×4﹣5xy)中即可求出结论.【解答】解:设小矩形的长为x,宽为y,依题意,得:,解得:,∴5×4﹣5xy=5×4﹣5×3×1=5.故答案为:5.三.解答题(共8小题)21.(1);(2);【分析】(1)方程组利用代入消元法求出解即可;(2)方程组利用加减消元法求出解即可.【解答】解:(1),把①代入②得:2(2y﹣3)+3y=8,解得:y=2,把y=2代入①得:x=1,则方程组的解为;(2),①×2+②得:5x=15,解得:x=3,把x=3代入①得:y=﹣4,则方程组的解为.22.(1)a5•a3÷a2;(2)(﹣2m)3﹣(m3)2;(3)(﹣2a2b)•(abc);【分析】(1)根据同底数幂的乘法和同底数幂的除法求出即可;(2)先算乘方,再合并即可;(3)根据单项式乘以单项式法则求出即可.【解答】解:(1)a5•a3÷a2=a5+3﹣2=a6;(2)(﹣2m)3﹣(m3)2=﹣8m3﹣m6;(3)(﹣2a2b)•(abc)=﹣a3b2c.23.(1)5x(2x+1)﹣(x+3)(5x﹣1);(2)(π﹣2020)0+()﹣2﹣2101×()100;【分析】(1)直接利用单项式乘以多项式以及多项式乘以多项式运算法则计算得出答案;(2)直接利用负整数指数幂的性质以及零指数幂的性质、积的乘方运算法则分别计算得出答案.【解答】解:(1)5x(2x+1)﹣(x+3)(5x﹣1)=10x2+5x﹣(5x2+14x﹣3)=10x2+5x﹣5x2﹣14x+3=5x2﹣9x+3;(2)(π﹣2020)0+()﹣2﹣2101×()100=1+9﹣(2×)100×2=1+9﹣2=8.24.(a+2)2+3(a+1)(a﹣1),其中a=﹣1小明的解法如下:解:=a2+2a+4+3a2﹣3=……根据小明的解法解答下列问题:(1)小明的解答过程里在标出①②③的几处中出现错误的在第②步;(2)请你借鉴小明的解题方法,写出此题的正确解答过程,并求出当x=﹣1时的值.【分析】(1)根据完全平方公式可知:(a+2)2=a2+2a+1,可作判断;(2)先根据整式的混合运算顺序和法则化简原式,再代入求值可得.【解答】解:(1)小明的解答过程里在标出①②③的几处中出现错误的在第②步;故答案为:②;(2)(a+2)2+3(a+1)(a﹣1)=a2+2a+1+3(a2﹣1)=a2+2a+1+3a2﹣3=4a2+2a﹣2,当x=﹣1时,原式=4×1+2×(﹣1)﹣2=4﹣2﹣2=0.25.疫情期间,我校“停课不停学”,开展云视讯网上教学,为了解七年级学生课堂发言情况,随机抽取年级部分学生,对他们某天在课堂上发言的次数进行了统计,其结果如表,并绘制了如图所示的两幅不完整的统计图,已知B、E两组发言人数的比为5:2,请结合图中相关数据回答下列问题:发言次数nA0≤n<3B3≤n<6C6≤n<9D9≤n<12E12≤n<15F15≤n<18(1)E组人数为4人;(2)被调查的学生人数为50人,A组人数为3人,并补全频数分布直方图;(3)求出扇形统计图中,“B”所对应的圆心角的度数:(4)七年级共有学生1500人,请估计全年级在这天里发言次数不少于12次的人数.【分析】(1)根据B、E两组发言人数的比和E组所占的百分比,求出B组所占的百分比,再根据B组的人数求出样本容量,从而求出E组的人数;(2)用(1)求出的样本容量乘以A组人数所占的百分比,求出A组的人数,用总人数乘以C组人数所占的百分比得出C组的人数,从而补全统计图;(3)用360°乘以“B”所占的百分比即可;(4)用总人数乘以发言次数不少于12次的人数所占的百分比即可.【解答】解:(1)∵B、E两组发言人数的比为5:2,E占8%,∴B组所占的百分比是20%,∵B组的人数是10,∴样本容量为:10÷20%=50,∴E组人数为:50×8%=4(人);故答案为:4;(2)被调查的学生人数为50,A组人数为:50×6%=3(人),C组的人数是50×30%=15(人),补全频数分布直方图如下:故答案为:50,3;(3)“B”所对应的圆心角的度数是:360°×20%=72°;(4)F 组所占的百分比是×100%=10%,则全年级在这天里发言次数不少于12次的人数有:1500×(10%+8%)=270(人).26.我校为做好高三年级复课工作,积极准备防疫物资,计划从新兴药房购买消毒液和酒精共40瓶,在获知北国超市有促销活动后,决定从北国超市购买这些物品.已知消毒液和酒精在这两家店的售价如表所示,且在新兴药房购买这些物品需花费900元.品名商店消毒液(元/瓶)酒精(元/瓶)新兴药房2420北国超市2018(1)求出需要购买的消毒液和酒精的数量分别是多少瓶?(2)求从北国超市购买这些物品可以节省多少元?【分析】(1)设需要购买的消毒液x瓶,酒精y瓶,根据从北国超市购买消毒液和酒精共40瓶需花费900元,即可得出关于x,y的二元一次方程组,解之即可得出结论;(2)根据总价=单价×数量求出从北国超市购买这些物品所需费用,用900减去该值即可得出结论.【解答】解:(1)设需要购买的消毒液x瓶,酒精y瓶,根据题意得:,解得:.答:需要购买的消毒液25瓶,酒精15瓶.(2)从北国超市购买这些物品所需费用为25×20+15×18=770(元),节省的钱数为900﹣770=130(元).答:从北国超市购买这些物品可节省130元.27.观察下列关于自然数的等式:1×3=22﹣1,①2×4=32﹣1,②3×5=42﹣1,③4×6=52﹣1,④5×7=62﹣1,⑤根据上述规律解决下列问题:(1)用上面的形式填出第⑥式和第⑦式:⑥6×8=72﹣1 ⑦7×9=82﹣1(2)写出你猜想的第n个等式(用含n的式子表示)n(n+2)=(n+1)2+1;(3)请你验证猜想的正确性.【分析】(1)由规律:两个相差2的两个整数的积等于两个数的平均数的平方与1的差,进行解答;(2)把规律:两个相差2的两个整数的积等于两个数的平均数的平方与1的差,用n的等式表示出来;(3)运用整数的混合运算顺序和运算法则对等式左右两边进行计算便可.【解答】解:(1)由题中前面6个算式可知,两个相差2的两个整数的积等于两个数的平均数的平方与1的差,所以,⑥6×8=72﹣1,⑦7×9=82﹣1,故答案为:7;7;9;8;(2)由规律可知:n(n+2)=(n+1)2﹣1,故答案为:n(n+2)=(n+1)2﹣1;(3)∵左边=n(n+2)=n2+2n,右边=n2+2n+1﹣1=n2+2n,∴左边=右边,∴n(n+2)=(n+1)2﹣1.28.【探究】如图①,从边长为a的大正方形中剪掉一个边长为b的小正方形,将阴影部分沿虚线剪开,拼成图②的长方形.(1)请你分别表示出这两个图形中阴影部分的面积:图①a2﹣b2图②(a+b)(a﹣b);(2)比较两图的阴影部分面积,可以得到乘法公式:(a+b)(a﹣b)=a2﹣b2(用字母a、b表示);【应用】请应用这个公式完成下列各题:①已知2m﹣n=3,2m+n=4,则4m2﹣n2的值为12;②计算:(x﹣3)(x+3)(x2+9);【拓展】计算(2+1)(22+1)(24+1)(28+1)…(232+1)的结果为264﹣1.【分析】(1)图①阴影部分的面积为两个正方形的面积差,即a2﹣b2,而图②的阴影部分为长为(a+b),宽为(a﹣b)的矩形,可表示出面积为(a+b)(a﹣b).(2)由由图①与图②的面积相等,可以得到乘法公式;①利用公式将4m2﹣n2写成(2m﹣n)(2m+n)进而求出答案,②连续两次利用平方差公式进行计算即可,将原式转化为(2﹣1)(2+1)(22+1)(24+1)(28+1)…(232+1),再连续使用平方差公式,得出最后的结果.【解答】解:(1)图①阴影部分的面积为两个正方形的面积差,即a2﹣b2;图②的阴影部分为长为(a+b),宽为(a﹣b)的矩形,其面积为(a+b)(a﹣b).故答案为:a2﹣b2,(a+b)(a﹣b);(2)由图①与图②的面积相等,可以得到乘法公式,(a+b)(a﹣b)=a2﹣b2,故答案为:(a+b)(a﹣b)=a2﹣b2;①4m2﹣n2=(2m﹣n)(2m+n)=3×4=12,故答案为:12;②(x﹣3)(x+3)(x2+9)=(x2﹣9)(x2+9)=x4﹣81;(2+1)(22+1)(24+1)(28+1)…(232+1),=(2﹣1)(2+1)(22+1)(24+1)(28+1)…(232+1),=(22﹣1)(22+1)(24+1)(28+1)…(232+1),=(24﹣1)(24+1)(28+1)…(232+1),=(28﹣1)(28+1)…(232+1),=264﹣1.。
牛津译林版英语七年级下期末卷二
牛津译林版英语七年级下学期期末测试卷二一、单项填空1.Be careful fire or something dangerous that may happen to you.A. onB. inC. forD. with2.—Wow! Whose flowers are these?—Happy birthday to you, Mum! They are just for .A. youB. yourC. yoursD. yourself3.—I watched the NBA game last night.—amazing game it was!A. WhatB. nowC. What anD. How an4.—You have a nice bike!—Thank you. My father it last week.A. buysB. boughtC. is buyingD. will buy5.After work, Linda usually drives to her son's school and then him home.A. putsB. carriesC. takesD. throws6.Every year people go back to their hometown for the Spring Festival.A. millionB. millionsC. million ofD. millions of7.—What do you know about Mary's brother?—Well, he likes volleyball and his is to be a sports star.A. jobB. dreamC. habitD. story8.Jane her favourite star's photos on the wall after she got home.A. put upB. put offC. put onD. put down9.It is very important us English well.A. for; learnB. of; learnC. for; to learnD. of; to learn10.—May I go to play football, Mum?—. You should do your homework first.A. No, you can'tB. No, you couldn'tC. Yes, you canD. Yes, you may二、完形填空It is exciting to travel to other countries. We can see many interesting things and people there. We can also 11 many delicious food there. But sometimes we aren't so happy 12 we can't understand the people there and it brings us much 13 .One of the best ways of understanding the people is to watch 14 they do in their free time. Most English men, women and children love 15 things, especially flowers. Visitors 16 England in spring, summer or autumn 17 see gardens all the way along the railway lines. There are flowers at the airports, in factory grounds and in gardens along the roads. Each English town has at least one 18 with beautiful flower beds.But what the English enjoy most is growing things 19 . If it is impossible to have a garden, then a window box or a pot (盆) will do. Looking at each other's 20 is what the English like doing in their free time.So when you travel to Britain, you can see the gardens to understand British people.11.A. see12.A. though13.A. happiness B. buyB. soB. sadnessC. tasteC. beforeC. troubleD. getD. becauseD. worry14. A. what B. how C. when D. which15. A. watching B. buying C. enjoying D. growing16. A. from B. to C. of D. off17. A. should B. must C. can D. have to18. A. zoo B. park C. cinema D. restaurant19. A. itself B. themselves C. himself D. herself20. A. gardens三、阅读理解B. kitchensC. schoolsD. bedroomsA21.Lin is 15, and her brother is 7. If both of them go to the City Museum, they should pay .A. $3B. $6C. $8D. $922.Which of the following sentences is NOT TRUE according to the table (表格)?A.It takes 20 minutes to go to the museum by underground.B.Taking a bus to the museum casts the most time.C.The museum opens for 12 hours every day.D.The museum is closed at 6:00 p.m. on weekdays.23.We can read the notice information from .A. a newspaperB. a storybookC. a history bookD. a comic bookBIt's a sunny morning. The weather is warm. Jack is at the bus stop and waiting for a bus. He is going to school. Then he sees an old man with a black umbrella in his hand."Is it going to rain today, sir?" Jack asks the old man. "No," says the old man, "I don't think so.""Then why do you take the umbrella? Do you want to keep the sun off?""No. The sun is not very hot today."Jack looks at the umbrella again. And the old man says, "I'm old. My legs are not very well, and I can't walk fast. I really need a cane (拐杖). But when I take a cane, people say, 'Look at the old man.' I don't like hearing that. So I take an umbrella."24.Where does Jack see the old man?A. On the bus.B. At school.C. In the library.D. At the bus stop.25. The old man uses the umbrella to .A. keep the sun offB. keep the rain offC. help himself walk fastD. save his life26.The old man will feel if he hears people say "Look at the old man".A. afraidB. unhappyC. quietD. worriedCAnimals have the abilities to protect themselves. They hide themselves when they face danger. Some hide in holes, some hide under the water, some hide inside trees... But some animals have an even quicker way to hide. They stay just where they are!An animal's colour can help it hide. Some rabbits have fur and it can change colours. In winter, their fur becomes white. So when snow falls, you can't see them. A white rabbit hides in the best place of all-- right inside its own fur. Some fish can change their colours when they need to. If they don't move, you can't see them because they are like sand (沙) or rocks (岩石).An animal's shape (形状) can help, too. There is a kind of bird. Its body is long and thin. It lives in tall grass. The long, thin bird looks just like the grass around it. Even if you look at the grass all day, you may never find the bird there.What will you do if you want to hide yourself? Think of how animals hide. Maybe you could best hide in a room with lots of other children in it.27.How many kinds of animals are talked about in the passage?A. Two.B. Three.C. Four.D. Five.28.What does the underlined word them refer to (指代)?A. Colours.B. Fish.C. Rabbits.D. Rocks.29.Which of the following is TRUE according to the passage?A.Not all animals need places to hide.B.Some fish like hiding in rocks.C.White rabbits can hide in the snow in winter.D.The long, thin bird can't hide in the grass.DI was a little sad on Mother's Day because my mother wasn't with me. She was 400 kilometers away.I called her and said happy Mother's Day to her. And I told her the story about lilacs (紫丁香).Lilacs are beautiful. I want some to make my room more beautiful. I know where I can find them. Last week together with my friends, I drove to a small hill. I ran quickly to enjoy the flowers as soon as I got off my car. I picked some lilacs carefully. On my way home I felt very happy.When we drove past a house, I saw an old woman sitting on a chair in front of it. She looked sad. I stopped my car, got out of it and walked to her. I put my flowers in her hands. The old woman thanked again and again. She looked so happy!When I went back to my car, one. of my friends asked me, "Who is the old woman? Why do you give our flowers to her?""I don't know her," I told her, "but it's Mother's Day today, and she has no children with her. Just think how much those flowers mean (意味着) to her."30.What did the writer want to do when she drove to pick the lilacs?A. To enjoy the flowers.B. Ta send the flowers to her mother.C. To send the flowers to the old woman.D. To make her room more beautiful.31.Why did the writer give the flowers to the old woman?A. The old woman was her friend.B. She disliked these flowers.C. Her mother asked her to do that.D. She wanted the old woman to be happy.32.The story tells us to .A. look after flowers wellB. be kind to othersC. remember Mother's DayD. love children四、信息还原根据对话内容,从对话后的选项中选出能填入空白处的最佳选项。
(人教版)七年级英语下册 期末测试题(二)附答案
七年级英语下册期末测试题(二)班次:姓名:得分:一、单项选择(15分)()1. We are going to the park by ________ bus. We will play ________ football there.A. a; aB. a; theC. the; theD. /; /()2. —Look at my new smart phone.—Wow, it’s so cool! When and where ________ you ________ it?A. do; buyB. have; boughtC. did; buyD. have; had()3. If you wish, you ________ come in and have a cup of coffee.A. mayB. mustC. wouldD. should()4. Look at the sign ________. We can’t talk here.A B C D()5. There ________ six countries in SCO(上合组织)at first, but now the number has increased to eight.A. isB. areC. wereD. will be()6. We are not allowed to laugh when we ________.A. ateB. have eatenC. are eating()7. —Did Qingdao show ________ to the world during the SCO Summit(上海合作组织峰会)? —Sure! Her beauty, high technology and rapid development.A. something specialB. anything specialC. special somethingD. special anything()8. I often go to the bookstore ________ Quancheng Road although it’s crowded.A. onB. forC. fromD. between()9. You bought the last ticket for the concert. How ________ you are!A. sweetB. luckyC. strangeD. funny()10. —Sally ________ goes to school late.—Yes, she gets up early every day.A. alwaysB. reallyC. neverD. usually()11. —Does Miss Wang have long or short hair?—________.A. Long hairB. Yes, she has long hairC. No, she doesn’tD. She is tall()12. Jeff, clean your bedroom. Don’t be so ________.A. shyB. lazyC. braveD. sad()13. —Is there a bank near here?—Yes, there is. Walk ________ the street and ________ right.A. across; goB. straight; turnC. down; turnD. along; go()14. —Excuse me, ________ is the hospital?—It’s next to the supermarket.A. whatB. howC. whereD. which()15.—________?—She is of medium height with blue eyes.A. How is RitaB. What does Rita likeC. What does Rita look likeD. How do you like Rita二、完形填空(10分)Lauren watched the Smiths putting their bags into their car. They were on their way to Florida for a vacation. It was Lauren’s 1 to go on a vacation like them.“What’s up, Lauren?” her brother Mark asked.“I’m wishing my 2 was Smith. Then I’d be on my way to Florida. Look at 3 dog. He is also going along for the trip, but I’m not.”“ 4 feeling sorry for yourself. You know Mom and Dad are 5 ,” Mark said.The blue car soon 6 and took the Smiths to Florida.Dad came out and sat down. “I think I could rearrange(重新安排)my work and have a weekend. We couldn’t go anywhere7 like Florida, but we could go to Cape May. It’s only about three8 ride from here.”Lauren knew he was doing this for her. “Is it really okay with your 9 ?”Dad said, “I was kind of wishing I could go 10 the Smiths, too. Because of you I know how much I need a real trip.”“It sounds like an excellent trip,” Lauren said.()1. A. habit B. show C. dream D. message()2. A. first name B. last name C. friend D. teacher()3. A. my B. your C. our D. their()4. A. Keep B. Start C. Stop D. Remember()5. A. free B. busy C. noisy D. quiet()6. A. left B. stayed C. turned D. jumped()7. A. hot B. cold C. near D. far()8.A. minutes’ B. hours’ C. days’ D. weeks’()9. A. study B. work C. problem D. class()10. A. on B. for C. with D. about三、阅读理解(20分)AHi! We are Lucy and Lily. We are sisters. We are studying in a high school. We always want weekends to come. Because on weekends there are different kinds of outdoor activities, such as going to the park, going shopping, playing ball games and so on.We usually go to the park on Saturdays. We often take some bread, meat, water and milk with us. It’s Saturday today. We are in the park again. Father is fishing in a boat on the lake. Mother is sitting and reading under the tree. We are flying a kite. Do you think we are happy?()1. Lucy and Lily are ________.A. studentsB. teachersC. nursesD. cousins()2. What do Lucy and Lily usually do on Saturdays?A. Play ball games.B. Go to the park.C. Go for a picnic.D. Go shopping.()3. How many people can we know from the passage?A. Three.B. Four.C. Five.D. Six.()4. What are Lucy and Lily doing now?A. They are fishing.B. They are reading.C. They are running.D. They are flying a kite.()5. Which of the following is NOT true?A. Lucy and Lily like weekends.B. Lucy and Lily often take some food with them to the park.C. It’s Sunday today.D. Today Lucy and Lily’s father is in the park, too.BJeff is a taxi driver. He likes his job. 6 ________ He likes to meet different people. He always works at night and comes home at about 3 o’clock in the morning. 7. ________It was Thursday. Jeff took a woman back home from a party at 2 o’clock in the morning. The woman had a little dog with her. When they got to her house, the woman couldn’t find her key. 8. ________ She decided to climb in through the window.Jeff waited in the taxi with the dog. He waited for about an hour, but the woman didn’t come back. 9.________ So he left the dog in the taxi and started to climb in through the window.Some policemen came and saw Jeff. They thought Jeff was a thief(小偷). Luckily, the woman came out soon. She was very tired that she fell asleep soon! 10. ________根据材料内容,从方框中选择合适的句子填入文中空缺处,使材料完整、通顺。
部编版七年级下册语文期末模拟测试卷2(含答案)
部编版七年级下册语文期末模拟测试卷2满分:120分时间:120分钟一、积累与运用(29分)1.下列加点字的注音有误的一项是( )(2分)A.哉.(zāi) 俯瞰.(kàn) 震悚.(sǒng) 炽.热(chì)B.碾.(niǎn) 屏.障(píng) 毡.鞋(zhān) 告罄.(qìng)C.涕.(tì) 嗥.鸣(háo) 褪.色(tuì) 淤.泥(wū)D.啮.(niè) 门槛.(kǎn) 服侍.(shì) 譬.如(pì)2.下列各组词语中有错別字的一项是( )(2分)A.遨游稠密杂乱无章千钧重负B.烧灼渺小锋芒必露亦复如是C.斑斓厄运略胜一筹耀武扬威D.循环妥帖语无伦次天涯海角3.下列加点词语使用有误的一项是( )(2分)A.下午,今年的第一场秋雨不期而遇....,虽然没有电视台预报的降水量大,但还是让郑州一直干燥的空气湿润了一些。
B.环卫工人的劳动也许是微不足道....的,但又是不可缺少的,因为我们的城市需要“美容师”,他们应受到尊重。
C.漫天大雪封住了他们的眼晴,使他们每走一步都忧心忡忡....,因为一旦偏离方向,错过了贮藏点,无异于直接走向死亡。
D.离开了忙碌的工作岗位,妈妈这回不但没显露出失落,反而表现出如释重负....的感觉。
4.下列句子没有语病的一项是( )(2分)A.一个好的比喻,或为形似,或为神似,或为形神兼似,总是离不开相似这一根本特点。
B.大爷种植的荔枝刚采摘完毕,就基本上全部被抢购一空。
C.山谷里回荡着我们欢乐的笑容和歌声。
D.要把我们的学生培养成为既有丰富的知识又有高尚的品质。
5.下列说法有误的一项是( )(2分)A.“管理”“推测”“増加”“喜欢”这几个词都是动词。
B.“改革开放”是偏正短语,“美丽风景”是并列短语,“安排任务”是动宾短语,“泡得出汗了”是动补短语。
C.“我抚摸了一下那小小的紫色的花舱”这句话中“抚摸”是动词,“了”是动态助词,“小小”是形容词。
2023年江苏省七年级下学期数学期末试题卷(附答案) (2)
江苏省七年级下学期数学期末试题卷本试卷由填空题、选择题和解答题三大题组成,共29小题,满分130分.考试时间120分钟.注意事项:1.答题前,考生务必将自己的考试号、学校、姓名、班级,用0.5毫米黑色墨水签字笔填写在答题纸相对应的位置上,并认真核对;2.答题必须用0.5毫米黑色墨水签字笔写在答题纸指定的位置上,不在答题区域内的答案一律无效,不得用其他笔答题;3.考生答题必须答在答题纸上,保持卡面清洁,不要折叠,不要弄破,答在试卷和草稿纸上一律无效.一、选择题本大题共10小题,每小题3分,共30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,请将选择题的答案写在相应的位置上.1.下列运算正确的是A.a·a2=a2 B.(ab)3=ab3C.(a2)3=a6D.a10÷a2=a52.某红外线遥控器发出的红外线波长为0.00 000 094m,用科学记数法表示这个数是A.9.4×10-7m B.9.4×107m C.9.4×10-8m D.9.4×108m3.一个正多边形的每个外角都等于36°,那么它是A.正六边形 B.正八边形 C.正十边形 D.正十二边形4.不等式组221xx≤⎧⎨+>⎩的最小整数解为A.-1 B.0 C.1 D.25.如图,直线l、n分别截∠A的两边,且l∥n.根据图中标示的角,判断下列各角的度数关系,正确的是A.∠2+∠5 >180°B.∠2+∠3< 180°C.∠1+∠6> 180°D.∠3+∠4<180°6.数a、b、c在数轴上对应的点如图所示,则下列式子中正确的是A.a-c>b-c B.a+c<b+cC.ac>bc D.a cb b <7.下列命题中是真命题的是A.质数都是奇数B.如果a=b,那么a=bC.如果a>b,那么(a+b)(a-b)>0 D.若x<y,则x-202X<y-202X8.关于x,y的方程组225y x mx m+=⎧⎨+=⎩的解满足x+y=6,则m的值为A.-1 B.2 C.1 D.49.(3x+2)(-x4+3x5)+(3x+2)(-2x4+x5)+(x+1)(3x4-4x5)与下列哪一个式子相同A.(3x4-4x5) (2x+1) B.-(3x4-4x5)(2x+3)C.(3x4-4x5) (2x+3) D.-(3x4-4x5)(2x+1)10.小新原有50元,表格中记录了他今天所支出各项费用,其中饼干支出的金额被涂黑,若每包饼干的售价为3元,则小明可能剩下的金额数是A.7元B.8元C.9元D.10元二、填空题本大题共8小题.每小题3分,共24分把答案直接填在答题卡相对应的位置上.11.命题“内错角相等”是▲命题(填“真”、“假”).12.(▲)(2a-3b)=12a2b-18ab2.13.已知2x=3y+7,则32x y-=▲.14.如果(x+3)(x+a)=x2-2x-15,则a=▲.15.如图,△ABC的三个顶点分别在直线a、b上,且a∥b,若∠1=120°,∠2=80°,则∠3的度数是▲.16.已知关于x的方程x-(2x-a)=2的解是负数,则a的取值范围是▲.17.计算:498×502-5002=▲.18.已知不等式组1xx n<⎧⎨>⎩有解,则n的取值范围是▲.三、解答题本大题共11小题,共76分.把解答过程写在答题纸相对应的位置上,解答时应写出必要的计算过程、推演步骤或文字说明.作图时用2B铅笔或黑色墨水签字笔.19.(本题满分9分,每小题3分)将下列各式分解因式:(1)4m2-36mn+81n2;(2)x2-3x-10;(3)18a2-50.20.(本题满分8分,每小题4分)(1)计算:[x(x2y2-xy)-y(x2-x3y)]·x2y;(2)先化简,再求值:(x+2)2+(2x+1)(2x-1)-4x(x+1),其中x=12.21.(本题满分8分,每小题4分)解下列方程组:(1)524235x yx y-=⎧⎨-=-⎩(2)42325560a b ca b ca b c-+=⎧⎪++=⎨⎪++=⎩22.(本题满分8分,每小题4分)解不等式(组)(1)334642x x--<-,并把解在数轴上表示出来; (2)()32412123x xxx⎧-->-⎪⎨+>-⎪⎩.23.(本题满分5分)如图,EF//AD,∠1=∠2,∠BAC=70°.填空:解:∵EF//AD(已知),∴∠2=▲(▲),∵∠1=∠2( ▲),∴∠1=∠3( ▲),∴AB∥▲( ▲).∴∠BAC+▲=180°( ▲).∵∠BAC=70°( ▲),∴∠AGD=▲°.24.(本题满分5分)某厂家为支援灾区人民,捐赠帐篷16800顶,该厂家备有2辆大货车、8辆小货车运送,每次每辆大货车所运帐篷数比小货车所运帐篷数的2倍少30顶,已知大、小货车每天均运送一次,2天恰好运完,求大、小货车每辆每次各运送帐篷多少顶?25.(本题满分5分)如图所示,一个四边形纸片ABCD,∠B=∠D=90°,把纸片按如图所示折叠,使点B落在AD边上的B'点,AE是折痕.(1)试判断B'E与DC的位置关系;(2)如果∠C=130°,求∠AEB的度数.26.(本题满分6分)已知关于x、y的方程组316215x aybx y-=⎧⎨+=⎩的解是76xy=⎧⎨=⎩(1)求(a+10b)2-(a-10b)2的值;(2)若△ABC中,∠A、∠B的对边长即为6a、7b的值,且这个三角形的周长大于12且小于18,求∠C对边AB的长度范围.27.(本题满分7分)如图,在△ABC中,点E在AC上,∠AEB=∠ABC.(1)图1中,作∠BAC的角平分线AD,分别交CB、BE于D、F两点,求证:∠EFD =∠ADC;(2)图2中,作△ABC的外角∠BAG的角平分线AD,分别交CB、BE的延长线于D、F两点,试探究(1)中结论是否仍成立?为什么?28.(本题满分7分)甲、乙两商场以同样价格出售同样的商品,并且又推出不同的优惠方案:在甲商场累计购物超过100元后,超出100元的部分按90%收费;在乙商场累计购物超过50元后,超出50元的部分按95%收费.(1)若小明妈妈准备用120元去商场购物,你建议小明妈妈去▲商场花费少(直接写“甲”或“乙”);(2)根据两家商场的优惠活动方案,问顾客到哪家商场购物花费少?请说明理由.29.(本题满分8分)如图,在△ABC中,BC=6cm.射线AG∥BC,点E从点A出发沿射线AG以2cm/s的速度运动,当点E先出发1s后,点F也从点B出发沿射线BC以72cm/s的速度运动,分别连结AF,CE.设点F运动时间为t(s),其中t>0.(1)当t为何值时,∠BAF<∠BAC;(2)当t为何值时,AE=CF;(3)当t为何值时,S△ABF+S△ACE<S△ABC.教师的职务是‘千教万教,教人求真’;学生的职务是‘千学万学,学做真人’。
2019-2020年人教版七年级下学期期末英语综合测试卷2(word版含答案)
2019-2020学年度下学期末测试2Ⅰ卷一、听力测试(本题共10分,每小题1分)略二、单项选择(本题共20分,每小题1分)( )11.--What are your hobbies?--I like playing ______ drums and ____ baseball.A./, theB. the, aC. the, /( )12. We are having a picnic. Why not ____ us?A.join B . join in C. joining( )13. He is good ____ telling stories. So he is good _____ children.A.With, atB. at , withC. to , with( )14. My mother usually cooks the food ____ six thirty ____ the morning.A.in, atB. at , onC. at , in( )15.--What time does Rick___?--At 7 o’clock.A.gets dressedB.get dressedC. get dress( )16.--____ is it from the school to the post office?--It’s about ______ walk.A.How far, ten minutes’B. How far, ten minutesC.How long, ten minutes( )17. Don’t ____ the street when the traffic light is red.A.crossB. acrossC. walk cross( )18. --______ is the weather in Barbin?--It’s snowy.A.WhatB. WhenC. How( )19. It’s raining all day, so I ___ stay at home.A.MustB. have toC. can’t( )20. Schools make rules for us students, so we must follow______.A.theirsB. themC. they( )21. I like koalas because they are ______ cute.A.a kind ofB. kind ofC. kinds of( )22. Look! This comb is _____ ivory. We shouldn’t buy it.A.made ofB. made inC. made from( )23.--_______ these tigers______ from?-- They are from South Africa.A.Where’re comeB. Where do , beC. Where’re, /( )24.--Bill is taller than ____ in his class.--Yes, he is even the tallest in his grade.A.Any other boysB. any other boyC. the other boy( )25.People in western countries don’t like to talk about their private(私人的)things, soyou can talk with them about ______.A.agesB. moneyC. weather( )26. If you want to improve your English , you should _____.①listen to English songs just for fun.②go over(复习) lessons after class every day③chat(聊天) with your classmates in English④read English aloud every morning⑤learn English just in classA.①②⑤ B. ②③④ C. ①③⑤( )27. The teacher of Class Five does a survey(调查)about what the students like to do after school. There are sixty students in her class. According to the form,___ students like to read books in the library.A.18B.24C.30( )28. Which pair of the words with the underlined letters has the same sound?A.school zooB. around countryC. town show( ) 29.Which of the following words has a different sound as the underlined letters of the word “ north”?A.mathB. southC. with( ) 30.Which word of the following doesn’t have the same stress as the others?A.ForgetB. CrossingC. Tuesday三、完形填空(本题共15分,每小题1分)(A)There is a zoo 31 my neighborhood. I like to spend 32 there on weekends. I love to watch the monkeys __33__ around. The monkeys sometimes fight.They look like my friends and __34__ when we fight.__35__ there, I usually walk out and turn right on Bridge Road. Then I walk along Bridge Road. The zoo is on the right.()31. A. on B. in C. at()32. A. times B. a time C. time()33. A. climbing B. climb C. to climb()34. A. I B. me C. my()35. A. To get B. Get C.Getting(B)Many people like to travel(旅行)by plane because it's fast,__36_ I don't like it because an airport(飞机场)is usually __37__from the city. You have to get there early and wait for hours for the plane to take off(起飞)and it is often late.You __38__open the windows.You can't choose (选择)the food. Planes are fast , but they still take hours to go out of the airport and into the city.I like __39__by train. I think trains are safe. Railway stations are usually in cities. When you are late__40__a train, you can catch_41_one. You can walk around on the train and open the windows. You can see many _42_ things on your way, though(尽管)it takes a little more time.I also like cars. You can start your journey(旅行)when you want to, and you don't need to _43_to a railway station or a bus stop. Also you can carry many things with you in a car. But_44_there are too _45_cars on the road.根据短文内容选择最佳答案。
人教版七年级数学下册期末测试卷 (2)
2016-2017学年度第二学期期末调研考试七年级数学试题友情提示:亲爱的同学们,请你保持轻松的心态,认真审题,仔细作答,发挥自己正常的水平,相信你一定行,预祝你取得满意的成绩。
一、选择题(本大题共12个小题;每小题2分,共24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,每小题选出答案后,用2B 铅笔把答题卡上对应题目的答案标号涂黑,答在试卷上无效.)1.点P (5,3)所在的象限是………………………………………………………( ) A .第一象限 B .第二象限 C .第三象限 D .第四象限2.4的平方根是 ………………………………………………………………………( ) A .2 B .±2C .16D .±163.若a b >,则下列不等式正确的是 ………………………………………………( ) A .33a b < B .ma mb > C .11a b -->-- D .1122a b+>+ 4.下列调查中,调查方式选择合理的是……………………………………………( ) A .为了了解某一品牌家具的甲醛含量,选择全面调查; B .为了了解神州飞船的设备零件的质量情况,选择抽样调查; C .为了了解某公园全年的游客流量,选择抽样调查; D .为了了解一批袋装食品是否含有防腐剂,选择全面调查.5.如右图,数轴上点P 表示的数可能是……………………………………………( ) A B C D.6.如图,能判定AB ∥CD 的条件是…………………………………………………( )A .∠1=∠2B .∠3=∠4C .∠1=∠3D .∠2=∠47.下列说法正确的是…………………………………………………………………( ) A .)8(--的立方根是2- B .立方根等于本身数有1,0,1-3421BCADC .64-的立方根为4-D .一个数的立方根不是正数就是负数 8.如图,直线l 1,l 2,l 3交于一点,直线l 4∥l 1,若 ∠1=124°,∠2=88°,则∠3的度数为…( ) A .26° B .36° C .46° D .56°9.已知21x y =⎧⎨=⎩是二元一次方程组71ax by ax by +=⎧⎨-=⎩的解,则a b -的值为 …………( )A .3B .2C .1D .-110.在如图的方格纸上,若用(-1,1)表示A 点,(0,3)表示B 点,那么C 点的位置可表示 为……………………………………( ) A .(1,2) B .(2,3) C .(3,2) D .(2,1)11.若不等式组⎩⎨⎧≤>-a x x 312的整数解共有三个,则a 的取值范围是……………( )A .65<≤aB .65≤<aC .65<<aD .65≤≤a12.运行程序如图所示,规定:从“输入一个值x”到“结果是否>95”为一次程序操作,如果程序操作进行了三次才停止,那么x 的取值范围是………………………( )A .x≥11B .11≤x <23C .11<x≤23D .x≤23二、填空题(本大题共8个小题;每小题3分,共24分.请把答案写在答题卡上) 13.不等式23x -≤1的解集是 ; 14.若⎩⎨⎧==b y ax 是方程02=+y x 的一个解,则=-+236b a ; 15.已知线段MN 平行于x 轴,且MN 的长度为5,1DCBA1l3l4l2l231若M 的坐标为(2,-2),那么点N 的坐标是 ; 16.如图,若∠1=∠D=39°,∠C=51°,则∠B= °; 17.已知5x-2的立方根是-3,则x+69的算术平方根是 ;18.在平面直角坐标系中,如果一个点的横、纵坐标均为整数,那么我们称该点为整点,若整点P (2+m ,121-m )在第四象限,则m 的值为 ; 19.已知方程组 由于甲看错了方程①中的a 得到方程组的解为31x y =-⎧⎨=-⎩;乙看错了方程②中的b 得到方程组的解为54x y =⎧⎨=⎩,若按正确的a b 、计算,则原方程组的解为 ;20.《孙子算经》中有一道题:“今有木,不知长短,引绳度之,余绳四尺五寸;屈绳量之,不足一尺,木长几何?”译文大致是:“用一根绳子去量一根木条,绳子剩余4.5尺;将绳子对折再量木条,木条剩余1尺,问木条长多少尺?”如果设木条长x 尺,绳子长y 尺,可列方程组为 ;三、解答题(本大题共7个小题,共72分.解答应写出文字说明,说理过程或演算步骤) 21.计算(本题满分10分) (1)32238)1(327+---- (2)2321---22.计算(本题满分12分)(1)解方程组:⎩⎨⎧-==-7613y x y x (2)解不等式组: 23.(本题满分8分)某校随机抽取部分学生,就“学习习惯”进行调查,将“对自己做错题进行整理、分析、改正”(选项为:很少、有时、常常、总是)的调查数据进行了整理,绘制成部分统计图如下:各选项人数的扇形统计图 各选项人数的条形统计图a 515 42x y x by +=⎧⎨-=-⎩① ②⎪⎩⎪⎨⎧-≤--<-121231)1(395x x x x请根据图中信息,解答下列问题:(1)该调查的样本容量为________,a =________%,b =________%,“常常”对应扇形的圆心角的度数为__________; (2)请你补全条形统计图;(3)若该校有3200名学生,请你估计其中“总是”对错题进行整理、分析、改正的 学生有多少名? 24.(本题满分8分)如图,在平面直角坐标系中,已知长方形ABCD 的两个顶点坐标为A (2,-1),C (6,2),点M 为y 轴上一点,△MAB 的面积为6,且MD <MA ;请解答下列问题:(1)顶点B 的坐标为 ; (2)求点M 的坐标;(3)在△MAB 中任意一点P (0x ,0y )经平移 后对应点为1P (0x -5,0y -1),将△MAB 作同样的平 移得到△111B A M ,则点1M 的坐标为 。
人教版七年级英语下册期末测试题 (2)
2016-2017 年学年度第二学期期末检测七年级英语说明:1.本卷分为听力部分和笔试部分,听力部分共 20 分,笔试部分共100 分。
2.在答题过程中,请保持卷面整洁,不得使用涂改液和粘胶等修改物品,如有改动时只需划掉不正确的答案在相应位置右边写上正确答案即可。
3.在完成答卷时,请监考员检查考生是否写对班别试室号等信息,只需交答题卡,试卷自行带走。
听力部分(20 分)一.听句子,选择正确图片,每个句子读一遍。
(5分)A B C D E1.2.3.4.5.二.听句子,选择正确答语。
每个句子读一遍。
(5 分)( )6. A. It w as cloudy. B. It is fine. C. It w as Saturday. ( )7. A. V ery w ell. B. Fine, thanks. C. Goodbye.( )8. A. I like physics best. B. My favorite season is fall. C. I don’t like the sun. ( )9. A. Sorry, I don’t know.B. Thank you.C. OK, Dad.( )10. A. It’s betw een -8℃ and 2℃. B. It’s from 8:00 a. m. to 4:00 p. m.C. It’s very cool today.三.听对话及问题,选择正确答案。
每段对话及问题读两遍。
(5 分)( )11. A. Because it’s w arm.B. Because she can often fly kites w ith her friends.C. It’s hot.( )12. A.-4℃. B.-5℃. C.-6℃.( )13. A. It’s sunny. B. It’s foggy. C. It’s w indy.( )14. A. Summer. B. Spring. C. Fall.( )15. A. Tw o months. B. Three months. C. One month. 四.听短文,完成下列表格。
【情境主题】2024年七年级语文下学期 期末测试卷 全国版(二)(原卷版)
七年级语文下学期期末测试卷(二)时间:120分钟满分:120分卷首语:一花一叶,微不足道,却能牵动人心;一花一叶,虽然渺小,却蕴含着蓬勃的力量和情感的共鸣。
在岁月的长河中,我们常常忽略了大自然的美好,其实,每一朵花的绽放,都在散发生命的气息;同样,每一片叶子也都让人流连忘返。
学校举办“一花一叶总关情”主题活动,邀请你参加!一、积累(17分)【田垄里飘来稻花香】1.阅读下面语段,完成各小题。
(8分)稻禾开花时,我发现稻禾开始有手有脚了,它们刨开松软肥沃的泥土,从深不可测的泥土里倾吐养料、精华,露.出粉粉的花蕊.来。
它们的花,细碎(A,)嫩.黄,像抖动的米粒,白中泛黄,如有骨骼一般饱满。
在我的记忆里,稻禾从春天长到秋天(B,)阳光从叶脉中消逝了。
但稻禾需要强劲.的阳光,它们总是吃几口,攒几口,然后将头抬起来,注视着太阳(C,)仿佛在太阳看不见的某个地方,有值得稻禾感激的人。
父亲知道稻禾开花是田垄里的一次盛晏,是大地赐予人的希望。
如果稻禾没有这次开花,那它与一丛青草无异,一定是虚空和徒劳的(D。
)而如果开花后有了沉甸甸的稻穗,则每一粒谷子都怀有慈悲与怜悯之心。
(节选自《湖南文学》年第7期刘群华《稻禾开花》) (1)下列词语中加点字注音有误的一项是()(2分)A.露.(lù)出B.花蕊.(ruǐ) C.嫩.(nèn)黄D.强劲.(jìn)(2)文中有下画线的词语字形有误的一项是()(2分)A.骨骼B.消逝C.盛晏D.赐予(3)文中画波浪线的词语使用有误的一项是()(2分)A.倾吐B.攒几口C.徒劳D.沉甸甸(4)下列各处标点符号使用有误的一项是()(2分)A.(A 处) B.(B处) C.(C处) D.(D处)二、阅读(53分)【童年的百草园,趣味无限】(一)名著阅读(6分)3.阅读下面文字,回答问题。
不必说碧绿的菜畦,光滑的石井栏,高大的皂英树,紫红的桑椹;也不必说鸣蝉在树叶里长吟,肥胖的黄蜂伏在菜花上,轻捷的叫天子(云雀)忽然从草间直窜向云霄里去了。
部编人教版2023--2024学年度第二学期七年级语文下册期末测试卷及答案(含两套题)
部编人教版2023--2024学年度第二学期期末测试卷及答案七年级 语文(满分:120分 时间:120分钟)第一部分 积累与运用(共24分)一、(完成1-6题,共16分)1.(2分)下列词语中,每对加点字的读音都相同的一项是( ) A .默契./锲.而不舍 抹.杀/抹.布 B .憎恶./深恶.痛绝 哺.育/捕.捉 C .忏悔./诲.人不倦 挑.逗/挑.选 D .禁.止/忍俊不禁. 枯槐./惭愧.2.(2分)下列词语书写无误的一项是( ) A .奠基 元勋 典籍 鞠躬尽悴 B .紊乱 灌输 虔诚 警报叠起 C .澎湃 屏嶂 尴尬 大庭广众 D .斑斓 泛滥 愧怍 一反既往3.(2分)下列句子中,加点词语使用最恰当的一项是( ) A .在春花烂漫的四月,花香弥漫羊城,第27个“世界读书日”在花香中不期而至....。
B .搭载神舟十三号载人飞船的运载火箭在酒泉卫星发射中心腾空而起,气冲斗牛....。
C .新冠疫情出现以来,许多医护人员齐聚疫区,涌现出不少可歌可...泣.的抗疫故事。
D .学会见异思迁....是一门必修课,因为变是世上唯一不变的法则,要适时顺势而为。
4.(2分)下列各句中没有语病的一项是( )A .作为一档新兴的电视节目,《中国好声音》目前最重要的当务之急就是扬长避短。
带给观众更为持久的音乐享受和情感感受。
B .当前,青少年深受网络语言的影响,忽视了汉语的规范化,这应引起教育工作者的高度重视。
C .天宫二号空间实验室已开启太空之旅,专家和媒体不仅高度关注,许多航天发烧友们,尤其是航天器的粉丝们,也为天宫二号激动不已。
D .语文课堂其实就是微缩的社会言语交际场,学生在这里学习将来步入广阔社会所需要的言语交际本领与素养。
为了弘扬“耕读”文化,班级开展了劳动教育的交流会。
以下是同学们搜集的材料,请你参与并完成任务。
材料一 2022年4月,教育部颁布了《义务教育劳动课程标准(2022年版)》,规定从2022年9月起,学校应开设独立的劳动必修课程。
七年级下册数学期末试题 二
第1页 (共8页)xx 县20 —20 学年度第二学期期末教学质量检测义务教育七年级数 学 试 卷(本试卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分,第Ⅰ卷1至2页,第Ⅱ卷3至8页,全卷满分120分,考试时间120分钟。
) 题号 Ⅰ Ⅱ总分 总分人一 二三 17 18 19 20 21 22 23 24 25 得分第Ⅰ卷(选择题 共30分)一、选择题(本大题10个小题,每小题3分,共30分。
请在每小题给出的4个选项中,将唯一正确的答案序号填在题后括号里。
)1.方程4x -3=x 的解是( )A .x = 34B .x = 43 C .x =1 D .x =-12.已知a >b ,且c 为有理数,则下列关系一定成立的是( )A .ac >bcB .c -a >c -bC .ac 2>bc 2D .c +a >c +b3.现有边长相同的正三角形、正方形和正六边形纸片若干张,下列拼法中不能铺成一个平面图案的是( ) A .正方形和正六边形 B .正三角形和正方形C .正三角形和正六边形D .正三角形、正方形和正六边形4.下列图案既是中心对称图形又是轴对称图形的是( ).A .B .C .D .5.现有5cm ,6cm ,11cm ,13cm 长的四根木棒,任取其中三根组成一个三角形,那么可以组成不同的三角形的个数是( ) A .1个 B .2个 C .3个 D .4个得 分 评 卷 人///////////密///////封///////线///////内///////不///////要///////答///////题///////////学校 班级 姓名 考号第2页 (共8页)6.若⎩⎨⎧==23y x 是方程3x -ay =0的一个解,则a 的值为( )A .3B .4C .4.5D .67.如图1所示,△ABC 是等腰直角三角形,点D 是斜边BC 的中点,△ABD 绕点A 旋转到△ACE 的位置,恰好与△ACD 组成正方形ADCE ,则△ABD 所经过的旋转是( )A .顺时针旋转225°B .逆时针旋转45°C .顺时针旋转315°D .逆时针旋转90°8.雅西高速公路于2012年4月29日正式通车,西昌到成都全长420千米,一辆小汽车一辆客车同时从西昌、成都两地相向开出,经过2.5小时相遇,相遇时,小汽车比客车多行驶70千米,设小汽车和客车的平均速度分别为x 千米/时和y 千米/时,则下列方程组正确的是( ) A .⎩⎨⎧=-=+705.25.24205.25.2y x y x B .⎩⎨⎧=+=-4205.25.270y x y xC . ⎩⎨⎧=-=+4205.25.270y x y x D .⎩⎨⎧=+=+4205.25.270y x y x 9.下列判断正确的是( )A .方程(x -3)(y +1)=0的解是⎩⎨⎧-==13y xB .方程2x -4y =8的解必是方程组⎩⎨⎧=+=-753842y x y x 的解C .t 可以取任意数时,⎩⎨⎧+=+=2345t y t x 都是方程3x -5y =2的解D . 二元一次方程组一定只有一组解10.若不等式组⎪⎪⎩⎪⎪⎨⎧++≥++≥++a x a x x x )1(343450312恰有三个整数解,则a 的取值范围为( )第3页 (共8页)A .12≤a ≤1B .12<a ≤1C .1≤a <32D .1≤a ≤32第Ⅱ卷(非选择题 共90分)二、填空题(本大题6个小题,每小题3分,共18分。
辽宁省锦州市2020年七年级下学期语文期末考试试卷(II)卷
辽宁省锦州市2020年七年级下学期语文期末考试试卷(II)卷姓名:________ 班级:________ 成绩:________一、选择题 (共7题;共14分)1. (2分)下列划线字读音有误的一项是()A . 憎恶(zèng)琐屑(xiè)涎水(xián)B . 诘问(jié)惦记(diàn)胡同(tòng)C . 哀悼(dào)奔丧(sāng)取缔(dì)D . 颓唐(tuí)糟糕(zāo)骷髅(kū)2. (2分)下面词语中没有错别字的一项是()A . 繁弦急管绝处缝声忍俊不禁再接再励B . 小心翼翼头晕目眩返老还童德高望众C . 眼花潦乱花枝招展问心无愧任重道远D . 心旷神怡举世无双多姿多彩具体而微3. (2分)填入下面文字中横线上的句子,与上下文衔接最恰当的一项是()我感到最美的,还是对面近在咫尺的鼓浪屿的夜景了,整个鼓浪屿就如同仙境一般,这景致真是太美了!①岛上建筑物的英姿在各种颜色的灯光照耀下,完整的展现在彼岸的我们的眼前,②在鼓浪屿西侧的上空,不时有飞机闪着灯光从夜空中滑过,把夜晚的鼓浪屿衬托得更加安祥和宁静,③白色的轮廓灯把鼓浪屿的海岸线勾勒的十分清晰,④厦门岛与鼓浪屿之间的海域里,客轮在悠闲的游弋着,A . ④②①③B . ②③①④C . ③①④②D . ①④②③4. (2分) (2017九上·江苏期中) 下面句子中标点符号使用有错误的一项是()A . 我们不需要更多的溢美之词,我们一贯欢迎客观的介绍和有益的建议,正所谓“不要人夸颜色好,只留清气满乾坤”。
B . 惟有这种有根底的智慧,才最靠得住、最为清澈、最可宝贵。
C . 生物钟既无齿轮,也无指针,它究竟是什么?又是怎样工作的呢?D . 爱人者,人恒爱之;敬人者,人恒敬之。
这份尊重与感动正是“以心换心”的完美诠释。
5. (2分) (2017八下·平阴期中) 下列有关文化常识表述不正确的一项是()A . 文房四宝指笔、墨、纸、砚,花中四君子指梅、兰、竹、菊,岁寒三友指松、竹、梅。
《初中生物人教版版七年级下学期》期末测试(二)
期末测试(二)满分:100分,限时:60分钟一、选择题(每小题2分,共54分)1.(2020山东临沂中考)如图是女性生殖系统结构示意图。
下列叙述不正确的是()A.胚泡移入④子宫中,最终附着在子宫内膜上B.精子在③中与卵细胞结合形成受精卵C.胎儿通过胎盘、脐带从母体获得所需要的营养物质D.进入青春期,女孩会来月经与④分泌的激素有关2.(2020山西太原五中期中)早在2002年我国政府就已经启动了“酱油补铁工程”,它是继食盐加碘后实施的又项全民营养工程。
“补铁”和“加碘”分别可以预防成年人患()A.乏力和头晕、佝偻病B.缺铁性贫血、地方性甲状腺肿C.佝偻病、脚气病D.骨质疏松症、地方性甲状腺肿3.(2020黑龙江齐齐哈尔二十一中四模)生物课上学习了“食物的营养成分”和“合理膳食”,同学们纷纷在微信群聊里“晒”出了自己的午餐。
你认为谁的午餐既营养合理又经济实惠()A.甜心冰激凌B.小黄豆C.腹黑大魔王D.太阳雨4.(2020独家原创试题)《舌尖上的中国》是中国中央电视台出品的一部美食类纪录片。
该节目围绕中国人对美食和生活的美好追求,用具体人物故事串联讲述了中国各地的美食生态。
下列关于食品的有关说法不正确的是()A.大米中所含的一类营养物质是人体进行生命活动时,主要的能量来源B.北京烤鸭含有丰富的蛋白质和脂肪C.特色美食肉粽主要原料是糯米和猪肉,瘦肉中所含主要营养物质在口腔中开始消化D.正处在身体生长发育期的青少年,应适当多吃鱼肉、奶、蛋等食品5.(2020内蒙古巴彦淖尔临河四中月测)如图模拟淀粉的消化过程,“剪刀1”“剪刀2”分别代表两种消化酶。
其中“剪刀2”能出现在消化道的哪个部位()A.口腔B.胃C.小肠D.大肠6.(2020新疆建设兵团中考)下列有关肺泡的叙述中不正确的是()A.肺泡外缠绕着毛细血管B.肺泡小、数目多,总面积大C.肺泡壁仅由一层上皮细胞构成D.体育锻炼能增加肺泡的数目7.(2019山东淄博中考)下列人体病症与物质缺乏对应关系不相符的是()A.夜盲症——缺乏维生素AB.佝偻病——儿童期缺钙C.坏血病——缺乏维生素CD.侏儒症——幼年时甲状腺激素分泌不足8.(2020广东佛山禅城中考)肺是人体呼吸系统的主要器官。
2023-2024学年七年级下学期英语期末测试模拟试卷二(天津专用)(原卷版)
2023-2024学年七年级下学期英语期末测试模拟试卷二(天津专用)满分120分。
考试时间100分钟第I卷一、听力理解(本大题共20小题,每小题1分,共20分)1.听力理解(共20小题,每小题1分,共20分)A)在下列每小题内,你将听到一个或两个句子,并看到供选择的A、B、C三幅图画,找出与你所听句子内容相匹配的图画。
1.A. B. C.2.A. B. C.3.A. B. C.4.A. B. C.B)下面你将听到十组对话,每组对话都有一个问题,根据对话内容从每组所给的A、B、C 三个选项中,找出能回答所提问题的最佳选项。
5. Which language can Bob speak well?A. French.B. English.C. Chinese.6. How much beef did the woman buy at the market?A. Half a kilo.B. One kilo.C. Two kilos.7. What will they give their teachers on Teachers’ Day?A. Some nice presents.B. Some flowers.C. Some books.8. What does the man want to buy for his daughter?A. A skirt.B. Some nice food.C. A storybook.9. What did the girl do last weekend?A. Had a picnic.B. Watched a play.C. Listened to music.10. What colour are the boy’s gloves?A. Black.B. Yellow.C. Purple.11. What does Jane have to do now?A. Do her homework.B. Clean the house.C. See a film.12. What will people use to take photos in twenty years?A. Cameras.B. Mobile phones.C. Computers.13. What will the girl do on Saturday afternoon?A. Have a piano lesson.B. Wash her clothes.C. Watch TV.14. What building is over there?A. A police station.B. A school.C. A post office.C)听下面长对话或独白,每段长对话或独白后都有几个问题,从题中所给的A、B、C三个选项中选出最佳选项。
七年级下册英语期末测试卷2 (解析版)
2022-2023学年七年级英语下学期期末测试卷(二)解析卷(时间:90分钟满分:100分)一、单项选择(15分)1.—____________ is it from your home to your school?—It takes me about 20 minutes by bus.A.How long B.How far C.How quick D.How much2.There some meat on the desk.A.be B.are C.is D.am3.It’s raining ______. My clothes are all wet.A.heavy B.hardly C.hard D.big4.—Would you like tea ________ juice?—I don't like tea ________ juice.I'd like some coffee.A.and,and B.and,or C.or,and D.or,or5.Peter can play ________violin,but he can't play ________ chess.A.the,/ B./,the C.the,the D.a,the6.—Would you like a large bowl of soup?—__________.A.Yes, I would B.No, I wouldn't C.Yes, it is D.Yes, please7.— ________ the weather ________ in Taiwan?—It’s windy.A.How’s; like B.How; like C.What; like D.What’s; like8.Jane is having fun ________ games with her parents at the park.A.playing B.to play C.play D.plays9.—Dad, why should I stop ________ computer games?—For your health, my boy.A.to play B.playing C.play D.plays10.—__________ do you like pandas?—Because they’re very cute.A.What B.WhenC.Why D.Who11.Tony is ___________ late for class. And he is always the first one to arrive at the school. A.sometimes B.neverC.always D.usually12.— Bill, does your sister have brown hair or red hair?— ________. She takes after my mother.A.Yes, she does B.No, she doesn’t C.Brown hair D.I don’t know13.—Wow, another gift! What’s in the box?—I’m not sure. It ________ be a pair of sports shoes.A.must B.may C.will D.could14.There isn’t ________beef here. Could you get ________for me?A.any;some B.some;anyC.any;any D.some;some15.It’s difficult for him________at night.A.sleep B.to sleepC.sleeping D.to sleeping二、完型填空(10分)We sometimes call the lion “the king of the forest” , because it is stronger and more dangerous than other animals. It can ______16______faster than many animals and hunt the best. It is the highest animal inthe____17____food chain.In the sea, the shark is one of the animals at the top of the food chain. It can swim fasterthan_______18_______ other sea animals, and it can use its big teeth to eat them.What is at the top of the world’s food chain? People are! We are not the biggest or fastest, but we arethe______19______. We could not run faster than cheetahs ( 猎豹), so we ____20____cars and now we can move the fastest. We could not fight better than lions, so we invented guns. Now we can hunt the best.People’s inventions are clever, but they can be _____21_____, too. For example, people built______22______, and now they make the air and rivers dirty.This can make terrible changes.___23___ riverskill fish. Then bears cannot eat the fish. If we kill one part of the food chain, other parts will also die. Remember that we are a part of the food chain, _____24_____we are in danger, too! If we protect animals, we are protecting ________25________! We could and we should do something for the world!16.A.walk B.swim C.run17.A.sea B.land C.mountain18.A.most B.another C.any19.A.strongest B.cleverest C.most important20.A.used B.drove C.invented21.A.interesting B.dangerous C.helpful22.A.factories B.hotels C.schools23.A.Dry B.Deep C.Dirty24.A.or B.so C.but25.A.ourselves B.oneself C.yourselves三、阅读理解(40分)AFour students from different (不同的) countries are camping (野营) and they are talking about the weather. Let’s listen to them!Tiffany: It’s cool and sunny most of the time in our country. I live in Beijing, a beautiful city (城市). It’s summer now. It is a little hot, but I still feel good.Lolita: I live in Moscow. It’s usually windy there. It makes me feel bad. I don’t like that.Ben: I live in the north (北方) of Canada. It’s very cold in winter, so we wear warm clothes. Many people like snowy weather because they can make snowmen and Canada is beautiful then.Jeff: I come from Australia. I never see a snowy day. It’s very hot most of the time in our country. And in winter it’s not very cold. Many people like to come to my country for their vacation26.It can be________ in Beijing now.A.March B.July C.December D.February27.________ doesn’t like the weather of his / her country.A.Jeff B.Lolita C.Tiffany D.Ben28.Jeff never sees a ________ day in Australia.A.snowy B.rainy C.windy D.cloudy29.We can learn that ________.A.Tiffany comes from Australia B.it’s usually warm in MoscowC.Ben lives in the south of Canada D.many people like to go to Jeff’s country for their vacation 30.The passage is mainly about ________.A.different habits B.different talks in different citiesC.different countries D.the weather in different countriesBWhen people think of healthy food for eyes, they think of carrots. Yes, carrots are good for eyes. But there is also much other healthy food for eyes. If you want to have healthy eyes, eat them.Kale is a dark green vegetable. It looks like a cabbage. If you often eat kale, you will still have healthy eyes when you are old. The vitamin A in it can help you see well in the dark.Chicken is great food for eyes. And you can cook it in many ways. You can cook chicken soup, gong bao chicken, chicken noodles and chicken salad. All of them are delicious.Salmon is a kind of fish. It has a lot of omega-3. If you often feel you have dry eyes, omega-3 in salmon can help you. You don’t n eed to eat a lot each time. A little will be OK.31.The passage is talking about ______.A.carrots and eyes B.delicious and healthy foodC.how to cook chicken D.healthy food for eyes32.Kale is a kind of ______.A.cabbage B.fruit C.vegetable D.meat33.The underlined word “them” refers to(指)______.A.food with chicken B.chicken soupC.chicken noodles D.gong bao chicken34.Mark has dry eyes. He can eat some ______.A.carrots B.kale C.chicken D.salmon35.We can learn from the passage that ______.41.Mike's mother works in Sun Library.She works for ______ hours a day.A.five B.six C.seven D.eight 42.If you want to read books in Sun Library,you can't go on ______.A.Monday B.Wednesday C.Saturday D.Sunday 43.If you want to read some storybooks,you can go to ______.A.Section A B.Section B C.Section C D.Section D 44.What does the underlined word “readers” mean in Chinese?A.作家B.读者C.病人D.游客45.Which of the following is TRUE?A.You can read some history books in Section B.B.You can eat in the library. C.You can listen to music in the library. D.You must be quiet in the library.四、从下列选项中选择恰当的选项补全对话(有两项多余)。
七年级英语下学期期末检测卷作业(2)
请听第 5 段材料,回答第 19 至第 22 小题。 Betty,Linda and Jenny are good friends,but they study in different st week,each of them had a school trip.Betty studies at Park School.She went on a school trip to the zoo on Tuesday.She saw many animals there.She thought the trip was
W:Yes.So I only go home on weekends. M:How far is it from your home to school? W:It's about 40 kilometers.
( C )13.How long does it take Alice to get home by bus?
请听第 4 段材料,回答第 16 至第 18 小题。 M:Hi,Gina!Where did you go on vacation? W:I went to the mountains. M:How was the weather in your city? W:It was sunny and warm.How about you, John?Where did you go on vacation?
期末检测卷
一、听力测试(27 分) A)请听下面 8 段对话。每段对话后有一小题,从 题中所给的 A、B、C 三个选项中选出最佳选项。听完 每段对话后,你都将有 10 秒钟的时间回答有关小题和 阅读下一小题。每段对话读两遍。(每小题 1 分)
( B )1.Who did the boy visit during the vacation?
七年级英语下学期期末试题2
七年级下期末英语试卷听力部分(共 30分)I.听录音,在A,B, C, D 中选出一个你所听到的单词,每题听两遍(5 分)()l. A.walk B.word C.world D.work() 2. A.where B.well C.there D.hill() 3. A.say B.they C.bee D.see() 4. A.four B.ball C.floor D.wall() 5.A Let ' s B.cats C.kites D.hasII.单句理解,在 A, B,C, D 中选出一个与你所听到的句子意思符合的答案,每题听两遍(5 分)() 1. A.She is English.B.One of her fiends is English.C.She can speak English.D.English is her fien d.() 2. A.Alice' s friend is in England. B. Alice is in England.C.Alice is from England.D.Alice 's friend is f rom England.() 3. A.Where are you from B.Wh ere is he from ?C.Where is she fromD.Where are they from?() 4. A.They speak English. B. They speak French.C. They speak English and French.D. They speak English or Frenc h.() 5. A. We go to school seven days a week. B. We goto school six days a week.C. We go to school five days a week.D. We go to school four d ays a week.III.情形反响,从每题所给的三个句子中选出一个句子,使该句能正确回答或紧跟所听内容,每题听两遍。
人教版七年级下数学期末复习质量检测卷(二)(含答案)
数学学习质量检测卷(二)(期末)一.选择题(每题3分,满分27分)1.的平方根是()A.2 B.﹣2 C.D.±22.点P的坐标为(2﹣a,3a+6),且到两坐标轴的距离相等,则点P的坐标为()A.(3,3)B.(3,﹣3)C.(6,﹣6)D.(3,3)或(6,﹣6)3.下列调查中,最适合全面调查(普查)的是()A.调查某型号炮弹的射程B.调查我市中学生观看电影《少年的你》的情况C.调查某一天离开重庆市的人口数量D.调查某班学生对南开校史知识的了解程度4.下列图形中,已知∠1=∠2,则可得到AB∥CD的是()A.B.C.D.5.如图,数轴上表示实数的点可能是()A.点P B.点Q C.点R D.点S6.若是关于x、y的方程组的解,则a+b的值为()A.3 B.﹣3 C.2 D.﹣27.如图,将Rt△ABC沿着点B到C的方向平移到△DEF的位置,AB=10,DO=4,平移距离为6,则阴影部分面积为()A.42 B.96 C.84 D.488.已知a>b,则下列四个不等式中,不正确的是()A.a﹣3>b﹣3 B.﹣a+2>﹣b+2 C.a>b D.1+4a>1+4b9.已知关于x、y的方程组,满足x≥y,则下列结论:①a≥﹣2;②a=﹣时,x=y;③当a=﹣1时,关于x、y的方程组的解也是方程x+y=2的解,④若y≤1,则a≤﹣1.其中正确的有()A.1个B.2个C.3个D.4个10.在一年一度的“安仁春分药王节”市场上,小明的妈妈用280元买了甲、乙两种药材.甲种药材每斤20元,乙种药材每斤60元,且甲种药材比乙种药材多买了2斤.设买了甲种药材x斤,乙种药材y斤,你认为小明应该列出哪一个方程组求两种药材各买了多少斤?()A.B.C.D.二.填空题(满分18分,每小题3分)11.写出“全等三角形的面积相等”的逆命题.12.已知方程2x+3y﹣1=0,用含x的代数式表示y,则.13.已知角a的余角比它的补角的还少10°,则a=.14.如图,A(4,0),B(0,3),点C为AB中点,以点B为圆心,BC长为半径作圆弧,交线段OB于点D.则点D的坐标为.15.小亮解方程组的解为,由于不小心,滴上了两滴墨水,刚好遮住了两个数●和★,请你帮他找回这个数,●=.16.某楼梯的截面如图,其中ER=5米,RQ=10米,若在楼梯上铺设地毯,至少需要米.三.解答题17.(10分)(1)解方程组(2)解方程4x2﹣25=0(3)解不等式组,并把解集在数轴上表示出来18.(6分)计算:﹣+()2+|1﹣|.19.(8分)机械厂加工车间有85名工人,平均每人每天加工大齿轮16个或小齿轮10个,2个大齿轮和3个小齿轮配成一套,问需分别安排多少名工人加工大、小齿轮,才能使每天加工的大小齿轮刚好配套?20.(8分)感知与填空:如图①,直线AB∥CD.求证:∠B+∠D=∠BED.阅读下面的解答过程,井填上适当的理由.解:过点E作直线EF∥CD∴∠2=∠D()∵AB∥CD(已知),EF∥CD,∴AB∥EF()∴∠B=∠1()∵∠1+∠2=∠BED,∴∠B+∠D=∠BED()应用与拓展:如图②,直线AB∥CD.若∠B=22°,∠G=35°,∠D=25°,则∠E+∠F=度.方法与实践:如图③,直线AB∥CD.若∠E=∠B=60°,∠F=80°,则∠D=度.21.(10分)我们居住的地球上有七大洲,各大洲面积之和约为15000万平方千米.根据图形提供的信息,解决下面的问题.(1)设计适当的表格表示数据资料.(2)画扇形统计图表示各大洲所占面积的百分比.(3)用文字语言描述数据资料信息.22.(8分)如图,把△ABC向上平移3个单位,再向右平移3个单位得到△A'B'C′.(1)在图中画出△A'B′C′;(2)请写出点A′,B',C'的坐标;(3)求出△ABC的面积.23.(10分)某农户今年1月初以20000元/亩的价格承包了10亩地用来种植某农作物,已知若按传统种植,每月每亩能产出3000千克,每亩的种植费用为2500元;若按科学种植,每月每亩产量可增加40%,但种植费用会增加2000元/亩,且前期需要再投入25万元,花费4个月的时间进行生长环境的改善,改善期间无法种植.已知每千克农作物市场售价为3元,每月底一次性全部出售,假设前x个月销售总额为y(万元).(1)当x=8时,分别求出两种种植方法下的销售总额y(万元);(2)问:若该农户选择科学种植,几个月后能够收回成本?(3)在(2)的条件下,假如从2020年1月初算起,那么至少要到何时,该农户获得的总利润能够超过传统种植同样时间内所获得的总利润?24.(12分)阅读材料,善于思考的小军在解方程组时,采用了一种“整体代换”的解法:解:将方程②变形:4x+10y+y=5即2(2x+5y)+y=5③把方程①代入③得:2×3+y=5∴y=﹣1把y=﹣1代入①得x=4∴方程组的解为请你解决以下问题:(1)模仿小军的“整体代换”法解方程组(2)已知x、y满足方程组①求x2+4y2的值;②求的值.参考答案一.选择题1. C.2. D.3. D.4. B.5. B.6. A.7. D.8. B.9. C.10. A.二.填空题11.面积相等的三角形全等.12. y=﹣x+.13.60°.14..15. 8.16. 15.三.解答题17.解:(1),由①得:3x﹣2y=8③,②+③得,6x=18,∴x=3,②﹣③得,4y=2,∴y=.故原方程组的解为:;(2)4x2﹣25=0,整理得x2=,解得:x=±;(2),由①得,x≤3,由②得,x>﹣1,故不等式组的解集为:﹣1<x≤3.在数轴上表示为:18.解:原式=﹣2﹣+5+﹣1=2.19.解:设需安排x名工人加工大齿轮,安排y名工人加工小齿轮,,解得:.答:需安排25名工人加工大齿轮,安排60名工人加工小齿轮.20.解:感知与填空:过点E作直线EF∥CD,∴∠2=∠D(两直线平行,内错角相等),∵AB∥CD(已知),EF∥CD,∴AB∥EF(两直线都和第三条直线平行,那么这两条直线也互相平行),∴∠B=∠1(两直线平行,内错角相等),∵∠1+∠2=∠BED,∴∠B+∠D=∠BED(等量代换),故答案为:两直线平行,内错角相等;两直线都和第三条直线平行,那么这两条直线也互相平行;两直线平行,内错角相等;等量代换.应用与拓展:过点G作GN∥AB,则GN∥CD,如图②所示:由感知与填空得:∠E=∠B+∠EGN,∠F=∠D+∠FGN,∴∠E+∠F=∠B+∠EGN+∠D+∠FGN=∠B+∠D+∠EGF=22°+25°+35°=82°,故答案为:82.方法与实践:设AB交EF于M,如图③所示:∠AME=∠FMB=180°﹣∠F﹣∠B=180°﹣80°﹣60°=40°,由感知与填空得:∠E=∠D+∠AME,∴∠D=∠E﹣∠AME=60°﹣40°=20°,故答案为:20.21.解:(1)用表格表示数据资料如下:(2)所画的扇形统计图如图所示:(3)亚洲的面积最大,大洋洲的面积最小,亚洲面积约为大洋洲面积5倍.22.解:(1)如图所示,△A'B′C′即为所求.(2)A′(2,2),B'(7,5),C'(4,6);(3)△ABC的面积为4×5﹣×5×3﹣×2×4﹣×1×3=20﹣7.5﹣4﹣1.5=7.23.解:(1)若按传统种植,当x=8时,y=10×3000×3×8÷10000=72万元;若按科学种植,当x=8时,y=10×3000×(1+40%)×3×(8﹣4)÷10000=50.4万元;(2)设n个月后可收回成本.(n﹣4)﹣2×10﹣25≥0,解得,∴10个月后收回成本;(3)设m个月后该农户获得的总利润能够超过传统种植同样时间内所获得的总利润,根据题意得,,整理得,1.6m>57.4,解得:,∴m=36,∴至少36个月后,该农户获得的总利润能够超过传统种植同样时间内所获得的总利润.24.解:(1)由②得:3x+6x﹣4y=19,即3x+2(3x﹣2y)=19③,把①代入③得:3x+10=19,即x=3,知识像烛光,能照亮一个人,也能照亮无数的人。
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2014-2015学年下学期期末七年级数学测试试卷
一、 单项选择题(共12个小题,每小题3分,满分36分)
1.16的平方根是 ( )
A .2
B .±4
C .±2
D .4 2.下面各图中,∠1与∠2是邻补角的是 ( )
A .
B .
C .
D .
3.有40个数据,其中最大值为35,最小值为12,若取组距为4对数据进行分组,则应 分为 ( )
A .4组
B .5组
C .6组
D .7组 4.为了了解一批产品的质量,从中抽取300个产品进行检验,在这个问题中,被抽取的 300个产品叫做 ( )
A .总体
B .个体
C .总体的一个样本
D .普查方式 5.由a >b 得到am <bm ,需要的条件是 ( )
A .m >0
B .m <0
C .m ≥0
D .m ≤0 6.下列命题中,不正确的是( )
A .在同一平面内,过一点有而且只有一条直线与已知直线垂直
B .经过直线外一点,有而且只有一条直线与这条直线平行
C .垂直于同一直线的两条直线垂直
D .平行于同一直线的两条直线平行
7.在平面直角坐标系中,已知线段AB 的两个端点分别是A (-4,-1),B (1,1),将线段AB 平移后得到线段A ′B ′,若点A ′的坐标为(-2,2),则点B ′的坐标为 ( ) A .(3,4) B .(-1,-2) C .(-2,-1) D .(4,3) 8.为了解中学生获取资讯的主要渠道,随机抽取50名中学生进行问卷调查,调查问卷设置了“A :报纸,B :电视,C :网络,D :身边的人,E :其他”五个选项(五项中必选且只能选一项),根据调查结果绘制了如下的条形图.该调查的调查方式及图中a 的值分别是( )
A .全面调查;26
1 2
1
2
1
2
1 2
B .全面调查;24
C .抽样调查;26
D .抽样调查;24
9.方程组⎩⎨⎧=-=+32y x a y x 的解为⎩
⎨⎧==b y x 5
,则a 、b 分别为 ( )
A .a =8,b =-2
B .a =8,b =2
C .a =12,b =2
D .a =18,b =8
10.若不等式组⎩⎨⎧<-->-+0
120
2b x a x 的解集为0<x <1,则a 、b 的值分别为 ( )
A .a =2,b =1
B .a =2,b =3
C .a =-2,b =3
D .a =-2,b =1
二、填空题(共6个小题,每小题4分,满分24分)
11.一个数的算术平方根是2,则这个数是____________.
12.把命题“平行于同一直线的两直线平行”写成“如果…,那么…”的形
式: . 13.已知点A (-1,b +2)不在..任何象限,则b =______. 14.不等式
26
4
331->+--x x 的解集是______ _______. 15.如图,将三角形纸板ABC 沿直线AB 平移,使点A 移到点B ,若∠CAB =50°,∠ABC =100°,则∠CBE 的度数为_________.
16.如图,在平面直角坐标系中,一动点从原点O 出发,按向上、向右、向下、向右的方向依次平移,每次移动一个单位,得到点A 1(0,1),A 2(1,1),A 3(1,0),A 4(2,0),…那么点A 2014的坐标为_______.
三、解答题(一)(共3个小题,每小题6分,满分18分)
17.(6分)计算:3633643+--
.
第15题图
第16题图
18.(6分)解方程组:⎩⎨⎧-=-=4
223y x y x .
19.(6分)如图,已知火车站的坐标为(2,1),文化宫的坐标为(-1,2).
(1)请你根据题目条件,画出平面直角坐标系; (2)写出体育场、市场、超市的坐标.
四、解答题(二)(共3个小题,每小题7分,满分21分)
20.(7分)解不等式组:⎩
⎨⎧-≥+>+13)1(201x x x ,并求其整数解.
21.(7分)如图,直线AB 、CD 、EF 相交于点O ,OG 平分∠COF ,∠1=30°,∠2=45°. 求∠3的度数.
22.(7分)某超市开业十周年举行了店庆活动,对A 、B 两种商品实行打折出售.打折前,购买5件A 商品和1件B 商品需用84元;购买6件A 商品和3件B 商品需用108元.而店庆期间,购买3件A 商品和8件B 商品仅需72元,求店庆期间超市的折扣是多少? 解:设打折前A 商品的单价是x 元,B 商品的单价是y 元,由题意得:
⎩⎨⎧=+=+10836845y x y x 解得⎩
⎨⎧==416
y x 所以3x +8y =3×16+8×4=80(元),72÷80=90%
五、解答题(三)(共3个小题,每小题9分,满分27分)
1
2
3
A B
C
D
O
E
G
F
第21题图
①
②
23.(9分)某学校对学生的课外阅读时间进行抽样调查,将收集的数据分成A 、B 、C 、D 、E 五组进行整理,并绘制成如下的统计图表(图中信息不完整).
阅读时间分组统计表 阅读人数分组统计图 阅读时间分组统
请结合以上信息解答下列问题 (1)求a 、b 、
c 的值;
(2)补全“阅读人数分组统计图”;
(3)估计全校课外阅读时间在20小时以下(不含20小时)的学生所占比例.
24.(9分)如图,∠1+∠2=180°,∠3=∠B ,试判断∠AED 与∠C 的大小关系,并证明你的结论.
25.(9分)某学校准备购买若干个足球和篮球(每个足球的价格相同,每个篮球的价格相同),若购买2个足球和3个篮球共需340元,购买5个足球和2个篮球共需410元. (1)购买一个足球、一个篮球各需多少元?
(2)根据学校的实际情况,需购买足球和篮球共96个,并且总费用不超过5720元.问最多可以购买多少个篮球?
第24题图 200150100500C 40%
D 28%
E 8% A
B。