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二年级数学上册解决问题应用题专题训练-及答案(易错题)

二年级数学上册解决问题应用题专题训练-及答案(易错题)

二年级数学上册解决问题应用题专题训练一.解答题(共100题,共625分)1.用一根10米长的竹竿测量井深,竹竿露出井面2米,井深多少米?2.小林计算48加一位数时,一不小心加到十位上去了,结果是88,你认为正确的结果应是多少?3.一本书有90页。

4.看图回答。

(1)买一个和一辆一共要花多少钱?(2)比贵多少钱?(3)你还能提出其他的数学问题吗?并解答。

5.明明买了一个8元的魔方和一个排球,一个排球的价钱相当于5个魔方的价钱,明明付了100元,应找回多少钱?6.小东星期二画了6张画,星期三、四、五画的张数和星期二同样多,小东从星期二到星期五共画了几张画?7.已经写了20个,再写8个就写完了,小英一共要写多少个字?8.一双手套有2只,3双手套有多少只?9.小虎在做一道加法题时,把第二个加数35看成了53,结果算出来的和是76,你知道正确的得数是多少吗?10.商店里。

(1)明明付了多少钱?(2)凤凤付了多少钱?11.两位老师带5个小朋友去公园玩,公园门票成人10元,儿童6元。

买门票一共要多少钱?12.六一节,一(2)班要准备64个做游戏,已经买了51个,还要买多少个气球?13.(1)二月份的电脑销售量是多少台?(2)这两个月的电脑销售总量是多少台?14.______ ______ ______ = ______ (______)15.小华身高92厘米,他再长高多少厘米就是1米?16.三种车一共有多少辆?17.一共可以坐乘客多少人?18.学校生物组收集蝴蝶标本68只,蜻蜓标本43只?蜻蜓标本比蝴蝶标本少多少只?19.小刺猬兄弟俩一共运了多少个草莓?送给邻居小兔17个,还剩多少个?20.(1)小丽比小明多做了多少朵?(2)小红做了多少朵花?(3)小明和小丽一共做了多少朵花?(4)小红和小明一共做了多少朵花?21.用一个长8厘米,宽4厘米的长方形形纸改一个正方形。

最大的正方形的周长是多少厘米?22.洋洋逛玩具店,1个布娃娃6元,1只小熊5元,洋洋买了1只小熊和3个布娃娃,一共需要多少钱?23.一片叶子上有3只毛毛虫,5片叶子上有多少只毛毛虫?24.小朋友们玩游戏,每行站4人,站了5行,还多3人,一共有多少个小朋友在玩游戏?25.(1)班有36人参加大扫除,二(2)班参加的人数比二(1)班多5人。

小学六年级数学易错题难题专题训练含答案

小学六年级数学易错题难题专题训练含答案

小学六年级数学易错题难题专题训练含答案一、培优题易错题1.对于实数a、b,定义运算:a▲b= ;如:2▲3=2﹣3= ,4▲2=42=16.照此定义的运算方式计算[2▲(﹣4)]×[(﹣4)▲(﹣2)]=________.【答案】1【解析】【解答】解:根据题意得:2▲(﹣4)=2﹣4= ,(﹣4)▲(﹣2)=(﹣4)2=16,则[2▲(﹣4)]×[(﹣4)▲(﹣2)]= ×16=1,故答案为:1【分析】先利用定义计算括号中的值,再进行计算即可.在利用新运算的时候需要先判断两个数的大小关系,根据其选择算式.2.数轴上有、、三点,分别表示有理数、、,动点从出发,以每秒个单位的速度向右移动,当点运动到点时运动停止,设点移动时间为秒.(1)用含的代数式表示点对应的数:________;(2)当点运动到点时,点从点出发,以每秒个单位的速度向点运动,点到达点后,再立即以同样的速度返回点.①用含的代数式表示点在由到过程中对应的数:________ ;②当 t=________ 时,动点 P、 Q到达同一位置(即相遇);③当PQ=3 时,求 t的值.________【答案】(1)(2)2t-58;当时,t=32 ;当时,t=;t=3,29,35,,【解析】(1)点所对应的数为:( 2 )①② 点从运动到点所花的时间为秒,点从运动到点所花的时间为秒当时,:,:,解之得当时,:,:,解之得【分析】(1)向右移动,左边的数加上移动的距离就得移动后的数;(2)需分类讨论,16≤t≤39 和39 ≤ t ≤ 46两类分别计算.3.已知x、y为有理数,现规定一种新运算“※”,满足x※y=xy+1.(1)求3※4的值;(2)求(2※4)※(﹣3)的值;(3)探索a※(b﹣c)与(a※c)的关系,并用等式表示它们.【答案】(1)解:3※4=3×4+1=13(2)解:(2※4)※(﹣3)=(2×4+1)※(﹣3)=9※(﹣3)=9×(﹣3)+1=﹣26(3)解:∵a※(b﹣c)=a•(b﹣c)+1=ab﹣ac+1=ab+1﹣ac﹣1+1,a※c=ac+1.∴a※(b﹣c)=a※b﹣a※c+1【解析】【分析】根据新运算的规律,求出计算式的值,求出探索的式子之间的关系.4.已知三种混合物由三种成分、、组成,第一种仅含成分和,重量比为;第二种只含成分和,重量比为;第三种只含成分和,重量之比为 .以什么比例取这些混合物,才能使所得的混合物中、和,这三种成分的重量比为?【答案】解:D:C=(3+5):2=4:1;第二种混合物不含,的含量为,第三种混合物不含,的含量为,所以倍第三种混合物含为,倍第二种混合物含为,即第二种、第三种混合物的重量比为;于是此时含有,,即,而最终混合物中,所以第一种混合物的质量与后两种混合质量和之比为,所以三种混合物的重量比为。

小学六年级数学易错题难题专题训练

小学六年级数学易错题难题专题训练

小学六年级数学易错题难题专题训练一、培优题易错题1.“△”表示一种新的运算符号,已知:2△3=2﹣3+4,7△2=7﹣8,3△5=3﹣4+5﹣6+7,…;按此规则,计算:(1)10△3=________.(2)若x△7=2003,则x=________.【答案】(1)11(2)2000【解析】【解答】(1)10△3=10-11+12=11;(2)∵x△7=2003,∴x-(x+1)+(x+2)-(x+3)+(x+4)-(x+5)+(x+6)=2003,解得x=2000.【分析】(1)首先弄清楚定义新运算的计算法则,从题目中给出的例子来看,第一个数表示从整数几开始,后面的数表示几个连续整数相加减,根据发现的运算规则,即可由10△3列出算式,再根据有理数加减法法则,即可算出答案;(2)根据定义新运算的计算方法,由x△7=2003,列出方程,求解即可。

2.甲、乙两商场以同样的价格出售同样的商品,并且又各自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.设小红在同一商场累计购物x元,其中x>100.(1)根据题意,填写下表(单位:元):(2)当x取何值时,小红在甲、乙两商场的实际花费相同?(3)当小红在同一商场累计购物超过100元时,在哪家商场的实际花费少?【答案】(1)271;0.9x+10;278;0.95x+2.5(2)解:根据题意,有0.9x+10=0.95x+2.5,解得x=150,∴当x=150时,小红在甲、乙两商场的实际花费相同。

(3)解:由0.9x+10<0.95x+2.5,解得x>150,由0.9x+10>0.95x+2.5,解得x<150.∴当小红累计购物超过150元时,在甲商场的实际花费少.当小红累计购物超过100元而不到150元时,在乙商场的实际花费少.当小红累计购物150元时,甲、乙商场花费一样【解析】【解答】解:(1)在甲商场:271,0.9x+10;在乙商场:278,0.95x+2.5.【分析】(1)根据提供的方案列出代数式;(2)根据(1)中的代数式利用费用相同可得关于x的方程,解方程即可;(3)列不等式得出x的范围,可选择商场.3.如图,一只甲虫在5×5的方格(每小格边长为1)上沿着网格线运动.它从A处出发去看望B、C、D处的其它甲虫,规定:向上向右走均为正,向下向左走均为负.如果从A到B记为:A→B(+1,+4),从B到A记为:B→A(﹣1,﹣4),其中第一个数表示左右方向,第二个数表示上下方向.(1)图中A→C(________,________),B→C(________,________),C→________(+1,﹣2);(2)若这只甲虫从A处去甲虫P处的行走路线依次为(+2,+2),(+2,﹣1),(﹣2,+3),(﹣1,﹣2),请在图中标出P的位置;(3)若这只甲虫的行走路线为A→B→C→D,请计算该甲虫走过的路程.(4)若图中另有两个格点M、N,且M→A(3﹣a,b﹣4),M→N(5﹣a,b﹣2),则N→A应记为什么?【答案】(1)+3;+4;+2;0;D(2)解:P点位置如图1所示;(3)解:如图2,根据已知条件可知:A→B表示为:(1,4),B→C记为(2,0)C→D记为(1,﹣2);则该甲虫走过的路线长为:1+4+2+1+2=10(4)解:由M→A(3﹣a,b﹣4),M→N(5﹣a,b﹣2),所以,5﹣a﹣(3﹣a)=2,b﹣2﹣(b﹣4)=2,所以,点A向右走2个格点,向上走2个格点到点N,所以,N→A应记为(﹣2,﹣2)【解析】【解答】解:(1)图中A→C(+3,+4),B→C(+2,0),C→D(+1,﹣2);故答案为:(+3,+4),(+2,0),D;【分析】(1)根据向上向右走均为正,向下向左走均为负确定数据即可;(2)根据所给的路线确定点的位置即可;(3)根据表示的路线确定长度相加可得结果;(4)观察点的变化情况,根据(1)即可确定点走了格数,从而确定结论.4.已知:如图,这是一种数值转换机的运算程序.(1)若第1次输入的数为2,则第1次输出的数为1,那么第2次输出的数为;若第1次输入的数为12,则第5次输出的数为________.(2)若输入的数为5,求第2016次输出的数是多少.(3)是否存在输入的数x,使第3次输出的数是x?若存在,求出所有x的值;若不存在,请说明理由.【答案】(1)4、6(2)解:5+3=8,8× =4,4× =2,2× =1,1+3=4,∴若输入的数为5,则每次输出的数分别是8、4、2、1、4、2、1,…,(2016−1)÷3=2015÷3=671 (2)∴第2016次输出的数是2(3)解:当x为奇数时,有 (x+3)+3=x,解得x=9(舍去),× (x+3)=x,解得x=1,当x为偶数时,有 × × x=x,解得x=0,× x+3=x,解得x=4,×( x+3)=x,解得x=2,综上所述,x=0或1或2或4【解析】【解答】解:(1)∵1+3=4,∴第1次输出的数为1,则第2次输出的数为4.×12=6,6× =3,3+3=6,6× =3,3+3=6,∴第1次输入的数为12,则第5次输出的数为6.【分析】(1)根据运算程序得到第1次输出的数为1,第2次输出的数为3+1,第1次输入的数为12,则第5次输出的数(12÷2÷2+3)÷2+3;(2)根据题意由输入的数为5,每次输出的数分别是8、4、2、1、4、2、1···,得到3次一循环,求出第2016次输出的数;(3)根据运算程序得到当x为奇数时和为偶数时,求出所有x的值.5.数轴上有、、三点,分别表示有理数、、,动点从出发,以每秒个单位的速度向右移动,当点运动到点时运动停止,设点移动时间为秒.(1)用含的代数式表示点对应的数:________;(2)当点运动到点时,点从点出发,以每秒个单位的速度向点运动,点到达点后,再立即以同样的速度返回点.①用含的代数式表示点在由到过程中对应的数:________ ;②当 t=________ 时,动点 P、 Q到达同一位置(即相遇);③当PQ=3 时,求 t的值.________【答案】(1)(2)2t-58;当时,t=32 ;当时,t=;t=3,29,35,,【解析】(1)点所对应的数为:( 2 )①② 点从运动到点所花的时间为秒,点从运动到点所花的时间为秒当时,:,:,解之得当时,:,:,解之得【分析】(1)向右移动,左边的数加上移动的距离就得移动后的数;(2)需分类讨论,16≤t≤39 和39 ≤ t ≤ 46两类分别计算.6.炒股员小李上星期日买进某公司股票1000股,每股28元,下表为本周内该股票的涨跌情况(单位:元)星期一二三四五六每股涨跌+4-6-1-2.5+4.5+2(2)本周内最高价和最低价各是多少钱?(3)已知小李买进股票时付了1.5‰的手续费(a‰表示千分之a),卖出时需付成交额1.5‰的手续费和1‰的交易税,如果他在周六收盘前将全部股票卖出,他的收益情况如何?【答案】(1)解:由上表可得:28+4-6-1-2.5=22.5元∴星期四收盘时,每股是22.5元(2)解:由题意得:星期一股价最高,为28+4=32元星期四股价最低,由(1)知22.5元∴本周内股价最高为32元,最低为22.5元(3)解:由题意得:买入时交易额为 28×1000=28000元买入手续费为 28000×1.5‰=42元卖出时交易额为29×1000=29000元卖出手续费和交易税共29000×(1.5‰+1‰)=72.5元总收益=29000-28000-(42+72.5)=885.5元因此,如果小李在周六收盘前将全部股票卖出,他将收益885.5元【解析】【分析】(1)由表格可知星期四收盘价格=28+4-6-1-2.5,计算可求得;(2)分别算出这几天的股市价格,比较可得答案;(3)分别算出买入时交易额、买入手续费、卖出时交易额、卖出手续费和交易税,则总收益=卖出时交易额-买入时交易额-买入手续费-卖出手续费和交易税,代入计算可得.7.甲、乙两只装满硫酸溶液的容器,甲容器中装有浓度为的硫酸溶液600千克,乙容器中装有浓度为的硫酸溶液400千克.各取多少千克分别放入对方容器中,才能使这两个容器中的硫酸溶液的浓度一样?【答案】解:甲容器硫酸:600×8%=48(千克),乙容器硫酸:400×40%=160(千克),混合后浓度:(48+160)÷(600+400)=20.8%,应交换溶液的量:600×(20.8%-8%)÷(40%-85)=600×0.128÷0.32=240(千克)答:各取240千克放入对方容器中,才能使这两个容器中的硫酸溶液的浓度一样。

部编版五年级数学下册易错题专项专题训练

部编版五年级数学下册易错题专项专题训练

部编版五年级数学下册易错题专项专题训练1. 一个数除以整数(0除外),商一定比这个数小。

2. 一粒有1~6共六个数字的骰子,随便怎么投掷,两次数字和为133. 棱长是6分米的正方体,它的表面积和体积相等。

4. 被除数有几位小数,商就有几位小数5. 把1块正方体橡皮泥捏成长方体,它的体积没有变。

6. 不规则图形用单位方格纸测面积,单位越小测得结果越准确7. 6.09除以一个数,所得的商一定大于18. 把一个体积是64立方分米的正方体木料从中间锯成两块,每块的表面积是32平方分米。

9. 两个不同自然数的最小公倍数一定比最大公因数大。

10. 这是轴对称图形11. 在海南,冬天不下雪,12. 如果一个质数与一个合数不是互质数,那么这个合数是这两个数的最小公倍数。

13. 如果将一块长方体的橡皮泥捏成一个正方体,我们看到它的形状变化,但是它所占的空间的大小没变。

14. 这是轴对称图形15. 7.42÷7=1.616. 如果a÷b=2,那么a和b的最大公因数是b。

17. 0.63÷0.9=718. 梯形上下底的和与三角形的底相等时,它们的面积相等,高一定相等19. 正方体的棱长扩大到原来的6倍,体积也扩大到原来的6倍。

20. 7.4÷5=1.4······0.821. 0.396÷36=0.1122. 一个正方体的棱长是3厘米,它的体积是18立方厘米23. 4.9699···保留三位小数约是4.970。

24. 3.6+7.6÷0.4-3.7要先算除法,再算加法,最后算减法。

25. 两个数的积一定比这两个数的最小公倍数大。

26. 几个数的公倍数是无限的,最小的只有一个。

27. 3.65+3.65×1.2-1.2=7.3×0=028. 因为34÷85=0.4 所以3.4÷8.5=0.0429. 4.05÷5的商小于130. 12和15的最大公因数是3。

苏教版一年级数学下册易错题专项专题训练

苏教版一年级数学下册易错题专项专题训练

苏教版一年级数学下册易错题专项专题训练1. 四十六写作:406 ()2. 27大于36 ()3. 个位上是4、十位上是6的数是46。

(判断对错)4. 小明不小心把新衣服弄坏了,请你帮助他挑选合适的一块布补上去。

①②③④⑤⑥5. 32+18=30 ()6. 78-9=79 ( )7. 26-4=24 ()8. 判断横线上的数对不对?对的画“√”,错的画“×”。

13-6=7______ 15-7=8______11-2=8______6+9=15______13-9=5______9. 在同一方位,看一个物体最多可以看到多少个面?看到三个面。

10. 下面的计算对吗?对的画“√”,把不对的改正过来。

(1)68+6=64(2)35-8=37(3)72-5=67(4)46+5=9611. 老师用的粉笔是圆柱形的.()12. 40+4=80。

(判断对错)13. 乒乓球、足球、篮球的形状都是球.()14. 45 > 42 ()15. 9 < 10 ()16. 判断横线上填的数对吗?17. 蛇与鳄鱼一样长。

18. 判断上填的数对吗?76+3=7919. 从右边起第一位是个位,第二位是十位。

(判断对错)20. 在同一方位,看一个物体最多可以看到多少个面?看到四个面。

21. 12-7=5()22. 选一块布把台布拼拼好。

()A .B .C .23. 36后面第五个数是41。

()24. 36后面第五个数是40 ()25. 花比苹果少一些()26. 12-7=5 ()27. 将下面两个图形重叠后,会变成()。

A .B .C .D .28. 从1数到100,个位是9的两位数有9个()29. 最大的两位数是91 ()30. 37是两位数,个位上的数是3,十位上的数是7 ()。

高三化学五个容易错的专题

高三化学五个容易错的专题

高三化学五个容易错的专题专题一阿伏伽德罗常数【易错题1】NA表示阿伏加德罗常数,下列叙述正确的是A.等物质的量的N2和CO所含分子数均为NAB.1.7gH2O2中含有的电子数为0.9NAC.1molNa2O2固体中含离子总数为4NAD.标准状况下,2.24L戊烷所含分子数为0.1NA『错解分析』错选C,认为在Na2O2固体中,含有Na+和O-两种离子,1molNa2O2固体中含有2molNa+和2molO-,故其中的离子总数为4NA。

『正确解答』此题考查了阿伏伽德罗常数知识。

阿伏伽德罗常数是指1mol任何微粒中含有的微粒数,等物质的量不一定是1mol,A错;H2O2的相对分子质量为:34,故其1.7g的物质的量为0.05mol,其每个分子中含有的电子为18个,则其1.7g中含有的电子的物质的量为0.9mol,数目为0.9NA,B 对;Na2O2固体中,含有的是Na+和O22-两种离子,1mol固体中含有3mol离子,故其中的离子总数为:4NA,C错;戊烷在标准状况下为液态,故其2.24L不是0.1mol,D错。

『规律小结』进行阿伏伽德罗常数的正误判断的主要考查点有:①判断一定量的物质所含的某种粒子数目的多少;②物质的组成;③通过阿伏加德罗常数进行一些量之间的换算等,在解题时要抓住其中的易错点,准确解答。

【易错题2】设NA为阿伏加德罗常数的值,下列叙述正确的是A.常温下,1L0.1mol·L-1的NH4NO3溶液中氮原子数为0.2NAB.1mol羟基中电子数为10NAC.在反应中,每生成3molI2转移的电子数为6NAD.常温常压下,22.4L乙烯中C-H键数为4NA『错解分析』选B或D。

认为羟基-OH中有8NA个电子或10NA个电子;22.4L乙烯是1mol,1mol乙烯C-H键数为4mol。

『正确解答』本题主要考查的是以阿伏伽德罗常数为载体考查如下知识点①考查22.4L/mol的正确使用;②考查在氧化还原反应中得失电子数的计算等内容。

化学易错题专题训练一酸碱中和滴定及应用含解析

化学易错题专题训练一酸碱中和滴定及应用含解析

酸碱中和滴定及应用【错题纠正】例题1、下面是关于酸碱中和滴定实验操作的叙述:①取一锥形瓶,用待测NaOH溶液润洗两次;②在一锥形瓶中加入25。

00 mL待测NaOH溶液;③加入几滴石蕊试剂作指示剂;④取一支酸式滴定管,洗涤干净;⑤直接往酸式滴定管中注入标准酸溶液,进行滴定;⑧左手旋转滴定管的玻璃活塞,右手不停摇动锥形瓶;⑦两眼注视着滴定管内盐酸液面变化,直至滴定终点。

其中叙述错误..的是()A.④⑥⑦B.①⑤⑥⑦C.③⑤⑦D。

①③⑤⑦【解析】锥形瓶不用待测液润洗,①错误;石蕊变色不明显,不易观察颜色,在酸碱中和滴定时不用石蕊作指示剂,③错误;滴定管使用前要用标准酸溶液润洗,⑤错误;滴定过程中眼睛应观察锥形瓶中溶液颜色变化,⑦错误。

【答案】D例题2、实验室中有一未知浓度的稀盐酸,某学生测定盐酸的浓度在实验室中进行实验。

请完成下列填空:(1)配制100 mL 0。

10 mol/L NaOH标准溶液.①主要操作步骤:计算→称量→溶解→________(冷却后)→洗涤(并将洗涤液移入容量瓶)→________→________→将配制好的溶液倒入试剂瓶中,贴上标签.②称量________g氢氧化钠固体所需仪器有:天平(带砝码、镊子)、________、_______。

(2)取20.00 mL待测盐酸溶液放入锥形瓶中,并滴加2~3滴酚酞作指示剂,用自己配制的标准液NaOH溶液进行滴定。

重复上述滴定操作2~3次,记录数据如下:①滴定达到终点的标志是____________________.②根据上述数据,可计算出该盐酸的浓度约为________(保留两位有效数字)。

③在上述实验中,下列操作(其他操作正确)会造成测定结果偏高的有________。

A.滴定终点读数时俯视读数B.酸式滴定管使用前,水洗后未用待测盐酸溶液润洗C.锥形瓶水洗后未干燥D.碱式滴定管尖嘴部分有气泡,滴定后消失【解析】(1)题目要求配100mL0.10mol/L NaOH标准液,应用天平称取0.1L×0.10 mol/L×40 g/mol=0。

高考一轮复习单元易错题专题训练:城市的空间结构

高考一轮复习单元易错题专题训练:城市的空间结构

高考一轮复习单元易错题专题训练:城市的空间结构一、单项选择题下图为某市三个不同区域的土地利用结构图。

读图回答1~2题。

1.三个区域中A.工业污染最严峻的是a B.常住人口最多的是bC.地价最高的是c D.商业活动最为旺盛的是b2.以下地理事项最有可能位于a区域的是A.大型批发零售市场 B.高级住宅区 C.疗养院 D.中心商务区1.B【命题立意】本题主要考查土地利用结构图的判读,难度中等。

【解题思路】依据图示各区域距离市中心的距离分析,a应表示位于市中心的商业区;b表示市中心边缘的住宅区;c表示工业区;工业污染最严峻的应为工业区;住宅区的常住人口最多,地价最高的是市中心的商业区;商业活动最繁忙的商业区a。

【易错分析】从市中心向城市外缘,功能区依次为商业区、住宅区、工业区,本题可能有考生在功能区的推断错误而选择其他选项。

2.D【命题立意】本题主要考查城市功能区合理布局,难度中等。

【解题思路】结合上题分析,a表示位于市中心的商业区;故推断为中心商务区;而大型批发零售市场一般布局于城市边缘的交通干线交汇处,符合交通最优原则。

【易错分析】本题易错点在大型批发零售市场的布局,大型批发零售市场占地面积较大,且要求交通便利,以便利商品集散,可能有的考生会认为大型批发零售市场要求消费人群较多,需布局在市中心而误选A选项。

下图为我国“某城市地租水平与人口密度改变示意图”,读图完成3~4题。

3.有关2019年的叙述正确的是()A.d地地租低于周边地区 B.人口密度与地租水平呈正相关C.b地交通便捷程度可能好于a D.人口密度由市中心向外呈下降趋势4.2019年,c地人口密度大于市中心,缘由最可能是()A.c地面积狭小,人口密度大 B.c地工业发达,工人众多C.c地交通便利,流淌人口多 D.c地为住宅区,人口稠密3.C【命题立意】本题主要考查城市地租水平与人口密度的改变,难度中等。

【解题思路】从图中可以看出,该城市的地租逐年上升,且城市中心地区的地租一般比城市边缘高;2019年b地地租水平提高了,说明白b地交通便捷程度可能好于a;城市人口密度在1980年时是城市最高,到2019年城市中心人口密度略有下降,人口起先向近郊移动,到2019年城市中心人口密度进一步下降,人口进一步向更远的郊区迁移。

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中考语法专题训练易错题一、名词1. ----Judy, I will have a meeting in Canada next week.----Well, you‟d better have a _____ with you, or you may easily get lost.A. photoB. mapC. stampD. postcard2. ----My grandpa knows the nature and medical ______ of many plants.----That‟s great.A. wealthB. priceC. costD. value3. ----The government is trying to develop winter sports for the 2022 Winter Olympics.----No wonder people are showing more ______ in them.A. warmthB. victoryC. interestD. standard4. ----Zheng He was a Ming dynasty ______ that we Chinese people take pride in.----I agree with you. He even succeeded ______ sailing to the east coast of Africa.A. tourist; toB. explorer; inC. philosopher; inD. inventor; to5. ----To the teacher‟s joy, the student has made great ______ thi s term.----The student‟s parents are also very happy.A. resultB. preparationC. progressD. process6. ----It‟s dangerous to drive after drinking.----That‟s true. It can increase the ______ of traffic accidents.A. advantageB. riskC. stressD. safety7. ----Look, there are a lot of ______ on the grassland. ______ sheepdog is sitting near them.----Oh, it‟s ______ beautiful sight(景象).A. sheep; The; theB. sheeps; The; aC. sheep; A; aD. sheeps; A; the8. ----Could you please offer me some ______ in my research?----Yes, certainly.A. ideaB. adviceC. suggestionD. message9. ----Are you sure this is a photo ______, the famous comedy actress?----It surprised you, didn‟t it? But she was once really thin.A. of Jia Ling‟sB. Jai LingC. Jia Ling‟sD. of Jia Ling10. ----There‟ll be a ______ meeting next week, and my parents will ______ come for it.----Mine will, too.A. parents‟; allB. parent‟s; allC. parents‟; bothD. parent‟s; both11. ----Henry, have you seen the English book on the ______ desk? If you see it, please take it to the ______office.----OK.A. teacher‟s; teachers‟B. teachers‟; teachers‟C. teacher‟s; teacher‟sD. teachers‟; teacher‟s12. ----It‟s easy to travel from Urumqi to Lanzhou by taking high-speed railway.----Yes. It‟s only ______.A. eight hours rideB. eight hour‟s rideC. eight-hours rideD. eight hours‟ ride13. ----How many ______ teachers are there in your school, David?----Fifty-six, nearly half of all the teachers.A. womanB. womenC. woman‟sD. women‟s14. ----Is it sports time now?----Yeah. Most ______ students in Class One are playing basketball on the playground.A. boyB. boysC. boy‟sD. boys‟二、代词1. ----Everyone makes mistakes in life. The key is not to repeat ______ again.----I quite agree with you.A. itB. thisC. thatD. them2. ----Do you plan to watch a talent show or a sports show tonight?----______. I can‟t stand them. I‟m going to watch a sitcom.A. NeitherB. BothC. NoneD. Either3. ----His name is James, but he usually calls ______ Jim.----That‟s very strange.A. heB. himC. hisD. himself4. ----Is Jessica still a manager at a big company?----No. She used to, but she gave up ______ job when she became a mother.A. sheB. herC. hersD. herself5. ----______ did you write to last night?-----A pen pal.A. WhatB. WhereC. WhomD. Whose6. ----Do you think ______ acceptable for a group of women to dance to loud music on the square near your house?----Yes, unless it‟s too late.A. thatB. itC. thisD. its7. ----I‟m a little hungry, Mum!----There are some apple pies on the table; you may take ______.A. itB. thatC. thisD. one三、冠词1. ----When will ______ car race begin?----I‟m not sure. Maybe next week, or maybe ______ week after next.A. a; theB. an; theC. the; aD. the; the2. ----Do you know ______ woman in red?----Yes, she is a professor of ______ Wuhan University.A. the; 不填B. a; 不填C. the; anD. the; the3. ----They stopped in ______ beautiful place for camping, near ______ farmhouse of the Smiths.----Oh, they didn‟t go very far.A. a; aB. the; aC. a; theD. the; the4. ----Last summer I went to see ______ Terracotta Army in Xi‟an.----Was it fantastic?A. theB. anC. aD. 不填5. ----Look at ______ picture they‟re talking about.----It‟s really ______ beautiful one.A. the; theB. the; aC. a; theD. a; a6. ----Tom has ______ useful book. ______ book is also very interesting.----If possible, I‟ll borrow it from him and then read it.A. the; AB. a; TheC. an; AD. an; The7. ----What worries him is that ______ little money he makes can‟t support ______ family as large as his.----Let‟s help him as much as we can.A. 不填; theB. a; theC. 不填; aD. the; a8. ----The third Sunday of June is ______ Father‟s Day.----Yes, it‟s ______ special day for western children to show their love for their father.A. a; theB. the; aC. 不填; aD. a; 不填9. ----Look! Who‟s ______ girl under the tall tree?----Oh, she‟s my sister, Kate. She‟s there for nearly ______ hour.A. the; anB. a; theC. the; aD. an; the10. ----Do you like ______ movie Dangal?----Yes. It‟s ______ educational movie. I like it very much.A. the; anB. a; anC. a; theD. the; a11. ----He is ______ honest boy. I want to become ______ person like him.----It‟s great for you to learn from him.A. a; aB. an; aC. the; aD. an; the四、数词和主谓一致1. ----Who won first prize of the ______ World Table Tennis Championship?----You mean the match held in ______? Ma Long did.A. fifty-four; GermanB. fifty-fourth; GermanyC. fifty-fourth; GermanD. fifty-four; Germany2. ----The workers will complete the new bridge in ______.----They are hardworking.A. two and a half monthsB. two months and halfC. two and a half monthD. two month and a half3. ----Good news! Bill won a medal in the long jump just now.----Well done! That‟s his ______ one at our school sports meeting.A. threeB. the thirdC. thirdD. the three4. ----How was your day off yesterday?----Great! It was my grandma‟s ______ birthday. We had a big family dinner.A. the eightyB. the eightiethC. eighteenthD. eightieth5. ----Where do your grandparents live now?----They live in an old apartment with ______ floors and they are on the ______ floor.A. fifth; threeB. fifth; thirdC. five; threeD. five; third6. ----______ of the land in that town ______ covered with trees and grass.----That is the reason why it‟s very beautiful.A. Two fifth; isB. Two fifth; areC. Two fifths; isD. Two fifths; are7. ----Mum, ______ of the apple ______ gone bad.----We‟d better eat up the rest as soon as possible.A. one third; haveB. one thirds; haveC. one third; hasD. first three; has8. ----What are they going to do next year?----They plan to plant ______ trees.A. three hundredB. three hundredsC. three hundred ofD. three hundreds of9. ----Both Lily and Lucy ______ to the party yesterday, but they didn‟t turn up at all.----How come?A. were invitedB. was invitedC. invitedD. have been invited10. ----Two months ______ a long time. We can visit our grandparents during the vacation.----Th at‟s great.A. amB. isC. areD. will be11. ----Not only my sister but also my parents ______ crazy about the TV play In the Name of the People.----That‟s really a good play.A. isB. areC. has beenD. will be12. ----Neither Jim nor David ______ Australia before, but they the country very well.----Maybe they read a lot about it.A. has gone toB. has been toC. have gone toD. have been to13. ----May I speak to your headmaster?----Sorry, he isn‟t here. He ______ to Xiangyang on business.A. have goneB. has goneC. have beenD. has been14. ----What happened when you got home yesterday evening?----Well, my sister with my parents ______ dumplings then.A. is makingB. are makingC. was makingD. were making15. ----I suggest that we make it a rule that each of us ______ bedroom one day a week.----I agree.A. cleanB. has cleanedC. cleansD. is cleaning16. ----We each ______ WeChat nowadays, even old people.----It is very popular.A. playsB. is playingC. playD. has played五、介词1. Father brought his little boy to a concert. But he was too young to sit ______ the whole concert.A. forB. withC. duringD. through2. I‟d like to send my articles ______ magazines and newspapers.A. inB. atC. forD. to3. We all like watching the TV program The Reader ______ Saturday evening.A. inB. atC. forD. on4. ----I haven‟t finished the book report of Journey to the West. It‟s so difficult.----You should hurry up. The report is due ______ three days.A. atB. forC. inD. on5. The Dragon Boat Festival is ______ the fifth day of May on the lunar calendar(阴历).A. inB. atC. onD. by6. Betty goes to learn how to play the violin every afternoon ______ Saturday and Sunday.A. besidesB. exceptC. fromD. on7. Doctors say that the first 10 minutes ______ a traffic accident is important for saving a life.A. inB. afterC. beforeD. during8. It‟s very kind ______ you to lend me your reusable shopping bags.A. ofB. forC. toD. with9. ----Do you the student ______ David and Jack?----Yes, it‟s Jim.A. inB. amongC. aroundD. between10. A woman stood ______ the window, watching the children playing games in the garden.A. byB. pastC. amongD. across11. ----Who is better ______ playing basketball, you or your brother?----Of course, my brother is.A. inB. atC. forD. on12. ----Can you come to my party this evening?----Sorry, I can‟t. I must prepare ______ my Chinese test.A. forB. ofC. aboutD. with13. Your gloves must be made ______ leather, for they feel soft and smooth.A. inB. ofC. forD. on14. ______ the scientists‟ hard work Tiangong-II was sent up into the sky successfully.A. Thanks toB. As forC. Instead ofD. According to15. ----How is the bird in the kitchen?----Maybe it flew in ______ the window.A.aboveB. throughC. underD. across六、连词1. ----I have only two tickets of Kongfu. ______ you ______ he can go with me.----Well, I have something else to do. Let him go with you.A. Either; orB. Neither; norC. Both; and;D. Not only; but also2. You will never achieve success ______ you put in more effort in the time to come.A. afterB. unlessC. ifD. because3. ----Why were you late for school this evening, Tom?----I was about to set out ______ it began to rain heavily.A. sinceB. whileC. asD. when4. ----Keep working hard, Paul, and you will surely realize your dream of being a writer ______ you give it up halfway.----I will, thank you, Ms Rowling.A. unlessB. ifC. sinceD. though5. Kate is a nice girl. She always goes back home to see her parents ______ it is convenient.A. unlessB. thoughC. becauseD. whenever6. ----A little monkey might feel sad ______ because of having a new baby sister or brother!----I didn‟t know that ______ I saw the film Born in China.A. untilB. ifC. sinceD. although七、形容词和副词1. ----Helping others makes us really ______.----You‟re quite right! We should always help those who need.A. lonelyB. lazyC. proudD. honest2. Even though we‟re in difficult times we need to keep hope ______.A. aliveB. realC. freshD. close3. Mrs. White is ______ enough to spend a lot of money helping those in need though she herself is not very rich.A. confidentB. curiousC. generousD. wise4. ----Jimmy, where are my glasses? I have looked everywhere.----Oh, Granny, they are ______ on your nose.A. evenB. wellC. everD. right5. ----Fire is very dangerous. You can‟t be ______ careful with it!----I‟ll be very, very careful.A. veryB. tooC. soD. quite6. ----How was your vacation in America?----It couldn‟t be worse! I don‟t ______ want to talk about it.A. evenB. hardlyC. everD. mainly7. ______ teenagers are becoming the “Heads-down Tribe(低头族)”. It‟s ______ bad.A. Too much; much tooB. Too many; much tooC. Much too; too muchD. Too many; too much8. Jane has become much ______ than before. She can express herself in public now.A. braveB. braverC. lazyD. lazier9. ----I want to buy a shirt. But I haven‟t much money.----The shirts here are very cheap. And the yellow one is ______. Do you like it?A. cheapB. cheaperC. the cheapestD. expensive10. ----Do you know Mr. Liu?---- Yes. He is a really nice person----the ______ person I know.A. nicerB. nicestC. happierD. happiest11. ----China is over 5,000 years old. It‟s one of ______ countries in the world.----Yes. It has a much ______ history than the USA.A. old; longB. older; longerC. older; the longestD. the oldest; longer12. He is very rich but that day he bought ______ bike to save money for the poor children.A. an expensiveB. a more expensiveC. the more cheaperD. the cheapest13. ----Is it ______ cheaper and ______ enjoyable to travel by train than by plane?----Yes, I think so.A. very; very moreB. even; a littleC. more; much moreD. much; far more14. ----Among these children, Jim has ______ life and he lives ______.----I agree with what you have said.A. the most happy; most happilyB. the happiest; happiestC. the happiest; most happilyD. the most happily; the happiest八、动词和动词短语1. ----This fruit ______ terrible to me, so I‟ve never tried it.----But your mum loves it.A. tastesB. tastedC. smellsD. smelled2. ----You ______ set out alone, or you ______ get lost in the jungle.----I‟ll never go alone.A. needn‟t; mayB. mustn‟t mightC. can‟t; needD. mustn‟t; must3. ----Have you got the results of the exam?----No. All we ______ do now is wait.A. mustB. canC. mayD. could4. ----May we leave the classroom now?----No, you ______. You ______ to leave until the bell rings.A. needn‟t; aren‟t allowedB. may not; are allowedC. mustn‟t; aren‟t allowedD. can‟t; are allowed5. ----Would you like to see a movie with me on Saturday night?----Sorry, I didn‟t ______ it. Could you please say it again?A. receiveB. findC. catchD. finish6. ----Let‟s get Laurie a gift for his birthday.----OK. Shall we ______ a book online for him?A. affordB. offerC. orderD. send7. ----Dad, I‟ll be in the final singing competition tomorrow.----Be careful not to get a sore throat and ______ your voice.A. loseB. raiseC. dropD. break8. ----I didn‟t mean to trouble Curry yesterday.----I know it was pouring with rain so you ______ his offer of a lift.A. refusedB. receivedC. allowedD. accepted9. ----Sorry, I‟ve forgotten your name. Can you ______ me?----I‟m Daniel.A. receiveB. remindC. respectD. remember10. ----What are you reading?----A book about a baseball player. The guy was well ______for his devotion to charity work.A. enjoyedB. respectedC. behavedD. expected11. ----That silly mistake almost ______ him his life.----I wish he would learn from it.A. tookB. paidC. costD. spent12. ----I don‟t know where to go this summer vacation.----Why not ______ visiting Jingzhou? There are many places of interest.A. regardB. considerC. wonderD. suggest13. ----What do you think of the sofa?----Not bad, but it may ______ too much space of our living room.A. take upB. put upC. open upD. make up14. In a soccer game, it‟s important for players to play together and ______ the best in each other.A. hand outB. leave outC. bring outD. take out15. In many eastern European countries, you are supposed to ______ your gloves before shaking hands.A. take offB. shut offC. cut offD. put off16. Xiong‟an New Area will help ______ big problems in Beijing, such as traffic jams and air pollution.A. set outB. check outC. work outD. give out17. ----What did your parents do last night?----They ______ to see In the Name of People《人民的名义》.A. picked upB. stayed upC. set upD. took up18. Andrew and Susan ______ for Shanghai to attend an international meeting yesterday.A. put offB. fell offC. set offD. kept off19. ----May I speak to Mr. Smith?----______, please. Here he comes.A. Hang outB. Pick upC. Take upD. Hold on20. ----If the customer rings up for me again, please ______ the call to the sales department.----Yes, I will.A. run throughB. look throughC. go throughD. put through21. ----The fire ______ at around 1 a.m. when people were celebrating with fireworks.----I‟m sorry to hear it.A. broke outB. ran outC. went outD. put out22. On the morning of the Spring Festival, children can‟t wait to ______ their new clothes.A. put upB. put onC. put awayD. put off23. ----How noisy it is! Could you please ______ the CD player a little.----OK, I will.A. turn offB. turn onC. turn downD. turn up24. ---- Are we going to have a sports meet on Friday, Li Ping?----No, it‟ll be ______ till next week because of the bad weather.A. put outB. put onC. put awayD. put off25. ----______ these past three years, which teachers will you miss most?----Mr. Jiang. He …s helped me a lot.A. Looking back onB. Looking forC. Looking throughD. Looking after26. My elder brother ______ my wet sports shoes and made me sit by the fire.A. took offB. kicked offC. carried outD. put out27. As soon as she ______ at home, Sally knew she had bought the wrong dress.A. handed it inB. tried it onC. cut it outD. made it up28. Almost every university now has a website which allows us to ______ the information about it.A. look atB. look afterC. look aroundD. look through29. ----Hi, Tina! What are you going to do for the coming summer holiday?----I‟m going to ______ cooking because I like eating delicious food.A. take downB. take upC. pick upD. clean up30. Although Yang Liping is a well-known dancer, she still ______ a simple country life.A. hopes toB. holds on toC. used toD. leads to31. To athletes, the most important thing is not to win a gold or a silver, but to ______.A. take partB. take noticeC. take placeD. take care九、非谓语动词1. I remember ______ to Beijing when I was a child.A. to takeB. takingC. to be takenD. being taken2. Our English teacher wants us ______ English stories out of class.A. readB. readingC. to readD. to reading3. ______ is the best way to keep good relationship with your parents, teachers and other people around you.A. Active communicatingB. Actively communicatingC. Actively communicationD. Active communicate4. My favorite TV program is “Readers”. I think we should spend as much time as we can ______ in our spare time.A. readB. to readC. readingD. on reading5. China has seen a trend(潮流) of ______ shared bikes since last year.A. rideB. ridingC. takeD. taking6. ----Do you know why he left so early?----______ for the English test, I guess.A. To studyB. StudyC. StudyingD. Studied7. ----Have you read the book Jane Eyre?----Yes. It’s a very famous novel and really worth ______.A. to readB. readingC. to be readD. read十、动词时态1. His grandmother ______ for six years. And he still misses her very much.A. diedB. has diedC. has been deadD. has been died2. Wow! You ------ dinner! Let‟ eat now.A. cookB. are cookingC. will cookD. have cooked3. Betty ______ hard since the beginning of last term. That‟s why his exam results are so good.A. has workedB. will workC. workedD. was working4. I ______ football quite well, but I haven‟t had time to play since the new year.A. will playB. have playedC. playedD. play5. ----You have a nice car.----Thank you. I ______it for more than one month.A. boughtB. have boughtC. have hadD. had6. ----I saw Mr. Smith in the office at ten last night.----That‟s impossible. He ______ an English party with us then.A. hasB. hadC. was havingD. has had7. Chairman Xi Jinping ______ the president of the USA ______ April 6th , 2017.A. will meet; inB. met; onC. has met; onD. meets; in8. ----When you ______ me last night, I ______ the piano.A. were calling; was playingB. were calling; playedC. called; playedD. called; was playing9. ----Excuse me, what time does Flight BA 2793 leave?----Just a minute. I ______ it for you.A. checkB. checkedC. will checkD. have checked10. ----Look at my new smart phone.----Wow, it‟s so cool! When and where ______ you ______ it?A. do; buyB. did; buyC. have; boughtD. have had十一、动词语态1. The museum ______ next month to celebrate the Science & Technology Festival.A. is decorated(装饰)B. will decorateC. is decoratingD. will be decorated2. ----Why are you leaving your job?----I can‟t stand it any longer. I ______ always ______ to work overtime.A. am; askingB. am; askedC. was; askingD. was; asked3. The waiter told me that free parking ______ for the hotel guests.A. was providedB. providesC. providedD. will be provided4. ----Why hasn‟t Tony come?----The invitation letter ______ to Toby by accident.A. was emailedB. has emailedC. is emailedD. emailed5. It is reported that about 120 foreign soccer experts ______ to teach soccer school students.A. inviteB. invitedC. to be invitedD. will be invited6. ----Quite a few new laws and rules on food safety ______ into use last month.----Can you tell me what they are?A. were putB. were puttingC. have been putD. put7. Teenagers have to be 18 years old before they ______ to drive a car.A. are allowedB. allowedC. will be allowedD. allow8. As China grows stronger and stronger, Chinese ______ in more and more schools out of our country.A. teachesB. is taughtC. has taughtD. was taught9. ----What do you think of the new film Youth(芳华)?----It‟s very popular. Millions of families ______ by it during National Day holiday last year.A. attractedB. are attractedC. were attractedD. were attracting10. ----Do you like the food?----I like it very much----it _______ very delicious.A. is smelledB. has been smelledC. smelledD. smells十二、特殊句型1. ----The summer vacation is coming. Why don‟t you go to the beach to enjoy the sunshine?----Sounds great! ______ advice!A. What goodB. How goodC. What a goodD. How good a2. ______ fine weather it is! Let‟s go for a picnic.A. What aB. WhatC. HowD. How a3. ----______ bad news! We didn‟t win the 15th Sudirman Cup.----It‟s a pity.A. What aB. WhatC. HowD. How a4. ----______ fine weather it is!----Yes. Look! ______ many people are walking around the park.A. What; SoB. How; SoC. How; SuchD. What a; So5. ----Ma Long won the men‟s singles final match at the 2017 World Table Tennis Championships.----______ exciting news it is!A. WhatB. What anC. HowD. How an6. ----______ excellent work you have done!----It‟s very kind of you to say so.A. HowB. WhatC. What anD. How a7. ----______ delicious food you served us tonight! Thank you very much!----I‟m glad that you enjoyed it.A. HowB. How aC. WhatD. What a8. ----Here‟s a present for you. Happy birthday, sweetie! Open it.----Wow! An iWatch! ______! Thank you so much!A. What a surpriseB. What surpriseC. What a wasteD. What waste9. ----Do you know that the Terracotta Army in China is more than 2,000 years old?----Wow! ______!A. How large it isB. How modern it isC. What a long history it hasD. What a beautiful place10. ----All of you have passed the driver‟s license test.----______ pleasant news you‟ve told us!A. HowB. WhatC. How aD. What a11. ----Excuse me, But can you tell me where the nearest bank is?----Just ______ going for two more blocks and you‟ll see it.A. keepB. to keepC. keepingD. kept12. ______ for me at the bus station across from the post office. I can find you easily.A. To waitB. WaitC. WaitingD. Waits13. ______ in more effort, or you‟ll fail your English examination again.A. PuttingB. To putC. To be putD. Put14. Boys and girls, ______ learning and have fun!A. keepB. to keepC. keepingD. kept15. ----The weather changes very often in June.----______. The highest temperature yesterday was 34o C, but it‟s just 18o C today.A. So it isB. So it doesC. So is itD. So does it16. ----I will not go swimming this afternoon.----______. I have to help my mother with housework.A. So will IB. So I willC. Neither will ID. Neither I will十三、复合句1. ----Judy, could you tell me ______ the schoolbag?----Oh, yes. I bought it in a store on the Internet.A. where did you buyB. where will you buyC. where you boughtD. where you‟ll buy2. ----Michael, could you tell me ______??----I‟d like to join the dance club.A. Why you like the dancing clubB. which club you are going to joinC. whether there are any clubs in your schoolD. which club have you joined3. ----Andy, I wonder ______ the new sports clothes.----Of course by credit card.A. what you paid forB. how you paid forC. Why you paid forD. how are you paid for4. ----Where does your sister park her car?----She often parks her car near the house ______ she can easily get to.A. whereB. whoC. whatD. which5. ----My hometown is the place ______ holds all my sweet memories.----So is mine.A. whereB. thatC. whatD. it6. I‟d like to tell you about the table manners ______ you should know when you visit France.A. whichB. whoC. whatD. how7. Yesterday Mr. Green went to his hometown and visited the old house ______ he was born in.A. whereB. whoC. whatD. which8. ----Why are you so worried?----I‟ve lost the watch ______ my dad bought me on my birthday.A. whatB. whoC. whichD. whom十四、情景交际1. ----Would you mind going to the park with us this Sunday?----______. I haven‟t been outdoors these days. I can‟t wait.A. Sorry, I can‟tB. Sure, I‟d love toC. Certainly notD. My pleasure2. ----Is that Thomas Smith speaking?----Yes. ______?A. What‟s your nameB. Who are youC. Who‟s thatD. Who it is3. ----I missed the match between Ma Long and Fan Zhendong last night. ______, May?----Amazing! It‟s the most exciting match of the world table tennis.A. What can I do for youB. Could you help meC. What‟s it aboutD. What‟s it like4. ----Don‟t throw litter here!----______.A. Yes, pleaseB. You‟re welcomeC. Me, neitherD. Sorry, I won‟t5. ----Would you like some orange juice, Julie?----______ I prefer to drink milk.A. I‟d love to.B. No, thanks.C. Yes, please.D. I don‟t like it.6. ----I tried to pass the driving test, but I failed.----______. Good luck to you next time.A. That‟ greatB. It‟s not interestingC. That‟s a pityD. Glad to hear that7. ----Mum, I don‟t have anybody to play with. Can I have a pet?----______. Our apartment is too small.A. Why not?B. I hope so.C. Anything else?D. I‟m afraid not.第11 页共11 页。

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