第三单元测试题
数学第三单元测试题及答案

数学第三单元测试题及答案一、选择题(每题2分,共20分)1. 下列哪个选项是最小的正整数?A. 0B. 1C. 2D. -12. 如果一个数的平方等于其本身,这个数可能是:A. 0B. 1C. 2D. 33. 一个数的绝对值是它到原点的距离,那么|-5|的值是:A. 5B. -5C. 0D. 104. 以下哪个表达式的结果不是整数?A. 4 ÷ 2B. 6 ÷ 3C. 5 ÷ 2D. 7 ÷ 25. 一个直角三角形的两条直角边分别是3和4,斜边的长度是:A. 5B. 6C. 7D. 8二、填空题(每题2分,共20分)6. 一个数的平方根是2,这个数是______。
7. 一个数的立方根是3,这个数是______。
8. 一个数的相反数是-5,这个数是______。
9. 一个数的倒数是2,这个数是______。
10. 一个数的绝对值是5,这个数可能是______。
三、计算题(每题5分,共30分)11. 计算下列表达式的值:(3 + 2) × (5 - 3)12. 计算下列表达式的值:(-4) × (-3) - 1213. 计算下列表达式的值:√16 + √914. 计算下列表达式的值:(-2)^3 + 4 × 3四、解答题(每题10分,共30分)15. 一个长方形的长是10厘米,宽是5厘米,求它的周长。
16. 一个圆形的半径是7厘米,求它的面积。
17. 一个班级有40名学生,其中男生占60%,求班级中男生的人数。
答案:一、选择题1. B2. B3. A4. C5. A二、填空题6. 47. 278. 59. 0.510. ±5三、计算题11. 512. 013. 514. -14四、解答题15. 周长= 2 × (长 + 宽) = 2 × (10 + 5) = 30厘米16. 面积= π × 半径² = π × 7² ≈ 153.94平方厘米17. 男生人数 = 总人数× 男生比例= 40 × 60% = 24人结束语:本测试题涵盖了第三单元的主要知识点,包括数的基本概念、运算法则和几何图形的周长与面积计算。
人教版(部编)四年级语文上册第三单元测试卷及答案(含四套题)

人教版(部编)四年级语文上册第三单元测试卷及答案一、积累与运用。
(共49分)1.读拼音,写词语。
(10分)yín chàng() yuán gù() zhàn jù()jūn yún() yōu liáng() kū wěi()xuǎn zé() zhù zhǐ() suí yùér ān()2.用“√”选择加点字的正确读音。
(6分)(1)蟋蟀爬出弯曲.(qǔ qū)的隧道,来到平台上弹.(tán dàn)琴。
(2)那些叶子在墙上铺得那么均匀,没有重.(chóng zhòng)叠起来的,也不留一点儿空.(kōng kòng)隙。
(3)这只水鸟大小和鸽子差.(chà zhuǎ)不多,爪.(chà zhuǎ)子细而长。
3.选择恰当的词语,打“√”。
(4分)(1)蟋蟀要花很长的时间,把粗糙的地方修理(平坦平整)。
(2)浓密的绿叶下,(隐藏隐蔽)着爬山虎那细小的脚。
(3)我们的教室(宽阔宽敞)整洁,光线充足。
(4)小草(牢固坚固)地抓住泥土,昂着头,挺着胸,像无畏的战士。
4.把下列句子中的加点词语换成另一个词语,让表述更合理。
(3分)(1)蟋蟀常常郑重..地选择住址。
()(2)它的工具是那样柔弱,所以人们对它的劳动成果感到震惊..。
()(3)我在草地上搜查..黑甲虫的踪迹。
()5.下列动物的“家”的名称完全正确的一项是()。
(2分)A.狗窝鸡窝鸟窝B.蚁穴虎穴鸟穴C.羊圈猪圈狗圈D.鼠洞狗洞蛇洞6.在括号里填上合适的关联词语,或在横线上根据关联词语补充句子。
(4分)(1)()感到疲劳,它()在未完工的家门口休息一会儿。
(2)()有骤雨,隧道()立刻就会干的。
(3)蟋蟀的出名不光由于它的唱歌,还。
(4)因为法布尔坚持不懈地观察昆虫,所以。
人教版小学数学第三单元测试卷及答案[1]
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第三单元测试卷一、填空题。
1.2.5时=()分1260m=()km2.3.6÷0.25=36÷()13.7÷0.58=()÷583.两个因数的积是7,其中一个因数是2.8,另一个因数是()。
4.3.25÷0.7的结果保留两位小数约等于(),精确到十分位约是()。
5.在0.23、0.3、0.2和0.231231四个数中,最大的数是(),最小的数是(),有限小数有(),无限小数有()。
6.一辆汽车0.5小时行驶40km,这辆汽车平均每小时行驶()km,每行驶1km需要()小时。
二、判断题。
(正确的画“√”,错误的画“✕”)1.近似数5.2与5.20的大小相等,精确度相同。
()2.无限小数大于有限小数。
()3.7.232323是一个循环小数。
()4.一个小数除以大于1的数,商一定大于这个小数。
()三、选择题。
(把正确答案的序号填在括号里)1.2.34545……不是()。
A.有限小数B.循环小数C.无限无数D.小数2.9.8除以2.9的商是3,余数是()。
A.11B.0.11C.1.1D.13.一辆汽车1.5小时行驶90km,照这样计算,行驶652km要多少小时?下面正确的算式是()。
A.652÷90÷1.5B.652÷(90÷1.5)C.652÷(90×1.5)D.90÷1.5×6524.按规律填数:18,9,4.5,2.25,1.125,(),0.28125。
A.0.5625B.0.125C.0.65D.5635四、在○里填上“>”“<”或“=”。
3.5÷0.9○3.5 5.3÷5.3○14.6÷0.02○4.6÷0.2 3.6÷1.2○3.63.2÷0.1○3.2×10 6.56÷4.2○1五、计算题。
第三单元 在集体中成长 单元测试-部编版道德与法治七年级下册

第三单元在集体中成长测试题一、选择题1.“人们在一起可以做出单独一个人所不能做出的事业:智慧+双手+力量结合在一起,几乎是万能的。
”韦伯斯特的这句话告诉我们()①个人的力量微不足道,集体的作用才是万能的②借助集体的力量,我们可以完成许多单凭一己之力无法完成的事情③个人的力量是有限的,在集体中没有发挥任何作用④个人的力量是分散的,但在集体中汇聚,就会变得强大A.①②B.②④C.①③D.③④2.小静在排练“班班有歌声”时因站位问题与同学发生争执,生气退出排练。
事后在班主任劝解下,她又重新参加排练。
对此,下列评价正确的是()A.小静不懂得尊重他人,不善于合作B.小静运用合法的方式捍卫人格尊严C.小静能够正确对待老师批评和教育D.小静缺乏集体意识,只顾个人利益3.南昌大学有这样一个“学霸宿舍”,宿舍中的4位女生不仅是生活中亲密的挚友,更是学业上并肩的伙伴。
她们毕业时,分别被保研至北京大学、清华大学、复旦大学和中国科学院大学。
下列对“学霸宿舍”认识正确的有()①积极向上的小群体有利于个体的成长和发展②集体中的小群体都能够相互接纳、相互欣赏③小群体成员往往把交往限制在一个有限空间④共同的价值追求和目标更容易把小群体凝聚起来A.①③B.②④C.②③D.①④4.当我们身边出现了沾染上江湖义气的小团体时,我们应该()①视而不见,远离他们②不为成见所“扰”,不为人言所惑③我们需要明辨是非④坚持正确的行为,坚持集体主义,反对小团体主义A.①②③B.①②④C.②③④D.①③④5.河南科技大学食品与生物工程学院143班李露露所在宿舍的六名同学全部考上了研究生。
考研期间,六个人一直相互打气,相互鼓励,相约卸载了浪费时间的APP,把宿舍群名字改成了“学习督察组”。
这说明( )A.有良好的集体就一定能成功B.良好的集体可以影响甚至改变一个人C.只要生活在优秀的集体中,个人的成功就会唾手可得D.坚持集体主义,反对小团体主义6.上学的时候一直不明白为什么上学非要穿那么丑的校服,但迫于学校老师的管理,不得不穿校服,总盼着双休日可以不穿校服。
2023—2024学年三年级上册语文第三单元测试(含答案)(部编版)

2023—2024学年三年级上册语文第三单元测试(含答案)(部编版)学校:___________姓名:___________班级:___________考号:___________一、选择题1.下列加点字的读音完全正确的一项是()A.擦燃.(rán)蜡烛.(zhú)火焰.(yàn)斧子(hǔ)B.缩.小(suō)拆.了(chāi)根茎.(jīn)划.出(huá)C.锯.子(jù)努.力(nǔ)稍.息(shào)禁.令(jìn)D.跺.脚(duò)处.罚(chǔ)诱.人(yòu)稍.息(shāo)2.下列没有错别字的一组是()A.摇蓝赤脚硬币冻僵B.奇异裂缝已经厨窗C.圣诞烤鹅慈受微笑D.翠绿闪烁精致眨眼3.下面四组词语中,既含有近义词,又含有反义词的一组是()A.快乐—痛苦兴奋—高兴B.焦急—焦虑满意—满足C.悲哀—悲伤凌乱—杂乱D.凌乱—整齐增添—减少4.下列句子中,标点符号使用有误的一项是()A.“奶奶!”小女孩叫起来,“啊!请把我带走吧!”B.“这真难受。
”种子想:“我一定要站起来,大口大口地呼吸空气,那一定会很好。
”C.等小蚂蚁们消失在草丛中,它才大叫:“立——定!原地休息!”D.有一天,吃过早饭,青头对红头说:“咱们玩捉迷藏吧!”5.下列说法不正确的一项是()A.《卖火柴的小女孩》中小女孩共四次擦燃火柴。
B.《那一定会很好》告诉我们只要能为他人服务,不管干什么都很好。
C.《在牛肚子里旅行》告诉我们朋友之间要相互帮助,珍惜友谊。
D.《一块奶酪》中的蚂蚁队长是一位严于律己、以身作则的人。
二、填空题6.照样子,写生字,再组词。
例:伸——(申)(申请)招——( )( )忆——( )( )踪——( )( )界——( )( )极——( )( )睁——( )( ) 7.背一背,填一填。
(1),理不辩不明。
(2),无理寸步难行。
人教版六年级下册数学第三单元测试卷 (含答案)

人教版六年级下册数学第三单元测试卷一、填空题1.一个圆柱的侧面展开图恰好是一个正方形,如果这个圆柱的底面半径是4cm,那么它的高是( );侧面积大约是( )。
(取整数)2.一个圆柱的侧面积是94.2cm2,高是5cm。
它底面的半径是( )cm,底面积是( )cm2。
3.如图,一顶厨师帽,高30cm,帽顶半径是10cm,做这样一顶帽子至少要用( )cm2的面料。
4.(如图),饮料瓶的容积是500mL,现在瓶中装有一些饮料,正放时饮料高度是20cm;倒放时,空余部分的高度是5cm,瓶中现有饮料( )mL。
5.如图,将直角三角形以一条直角边所在的直线为轴旋转一周,可以得到一个圆锥,圆锥的底面直径是( ),高是( )。
6.下图中,瓶底的面积和锥形杯口的面积相等,将瓶子中的液体倒入锥形杯子中,能倒满( )杯。
7.圆柱的底面半径是2分米,高是5分米,它的表面积是( )平方分米;体积是( )立方分米。
( 计算时取3.14)8.圆锥和圆柱的底面积和体积分别相等,圆锥与圆柱高的比值是( )。
9.把一根长2米的圆柱形木料截成三个小圆柱,表面积增加了50.24平方厘米,这根木料原来的体积是( )。
10.用一张长为6dm,宽为2dm的长方形纸围成一个圆柱体,这个圆柱的侧面积是( )dm2。
二、判断题1.一个圆锥的高不变,半径扩大到原来的2倍,体积也扩大到原来的2倍。
( )2.以直角三角形的一条直角边为轴旋转一周,转出的几何体是圆锥。
( )3.圆锥的体积比圆柱的体积小三分之二。
( )4.等体积等高的圆柱圆锥,圆锥的底面积是圆柱的3倍。
( )5.圆柱的侧面展开是正方形时,这个圆柱的高和它的底面周长相等。
_____三、选择题1.用一个高36厘米的圆锥形容器盛满水,倒入和它等底等高的圆柱形容器中,水的高度是()厘米.A.36 B.18 C.16 D.122.下图中,大圆锥的底面半径是小圆锥的2倍,高也是小圆锥的2倍,大圆锥的体积是小圆锥的()倍。
第三单元 人民当家作主 测试卷含答案

第三单元人民当家作主时间:60分钟满分:100分一、选择题(每小题3分,共45分)1 .走过六十余载,人民代表大会制度不断得到巩固和发展。
实践充分证明,我 国的人民代表大会制度是 的好制度。
()①符合中国国情和实际②体现社会主义国家性质③保障人民直接管理 国家事务④保障实现中华民族伟大复兴A.①②③B.①②④C.①③④D.②③④2 .下列各项中,对漫画的理解正确的有()①人大代表来自人民,代表人民的利益②人大代表应有高度责任感③我国实行人民代表大会制度 ④我国的一切权力属于人大代表A.①②③B.①②④C.②③④D.①③④3 .坚持和完善人民代表大会制度必须()①毫不动摇坚持中国共产党的领导②坚持领导负责制③保证和发展人 民当家作主④全面推进依法治国A.①②③B.①②④C. ®@@D.②③④ 4 .人民政协是中国共产党领导的多党合作和政治协商的重要机构。
下列属于其 职能的是()为国为民1提≡人大代表A.批准2022年中央预算B.为完成“十四五”规划建言献策C.制定《中华人民共和国国歌法》D.任命国务院总理、副总理和各部部长5.某社区进行社区居民委员会换届选举,通过居民直接投票的方式选出了新一届社区居民委员会。
选举过程合法有序,公平公正。
居委会选举工作圆满完成。
对上述“居委会”认识有误的一项是()A.居委会属于基层群众性自治组织B.居委会成员由居民间接投票选举产生C.居委会实行办事公开制度,定期向居民会议汇报工作,接受居民监督D.居委会主要管理本居住地区的公共事务和公益事业6.小军的爸爸是某国有企业工程师,去年工资收入是52 OOO元,奖金18 000 元;小军的妈妈开一家个体杂货店,年收入15 000元,同时承包了土地种植蔬菜,年收入5 000元;家里有房屋出租,年收入6 000元。
去年小军一家按劳分配收入和按生产要素分配的收入分别是()A. 57 000 元,21 000 元B. 75 000 TE, 21 000 元C. 70 000 元,26 000 元D. 57 000 元,26 000 元7.初中生小王通过父亲了解到:县里前些年砂糖橘价格较高,于是很多人跟风种植,导致今年市场上砂糖橘太多,价格大幅下降。
(北师大版)小学数学三年级上册 第三单元测试试卷02及答案

第三单元测试一、选择题.1.书店、文具店和学校同一条街上,书店距学校180米,文具店距离学校150米.书店距文具店( )米.A .330B .30C .330或302.养殖场养了120只,比多40只,一共养了多少只鸡?正确算式是().A .12040+B .12040120++C .12040-3.妈妈给了小明100元,小明买了文具盒37元,又买了笔记本48元,小明剩下的钱比原来少多少元?列式正确的是( )A .1003748--B .()1003748-+C .3748+4.电影院共有610个座位,现在有280人看电影,还可以坐( )人.A .790B .890C .430D .3305.与()42612658--结果相等的算式是( ).A .42612658--B .42658126++C .42612658-+二、填空题.6.甲数是156,比乙数多117,甲、乙两数的和是________.7.小明的爸爸是出租车司机,早上爸爸开车从家走时,小明看了出租车的里程表读数是150千米,晚上爸爸收车回家时,小明又看了出租车的里程表读数是260千米,小明的爸爸今天开车行驶了________千米.8.一部手机原价为893元,现在降价268元,这部手机的现价为________元.9.工地运来1000吨水泥,第一天用了305吨,第二天用了255吨,还剩下________吨.10.下面是淘气的爸爸上周前5天每天下班回家后汽车里程表的读数.(单位:千米)星期一星期二星期三星期四星期五234277315354402(1)星期一出发前,里程表的读数是199千米,淘气的爸爸星期一开车行驶了________千米.(2)淘气的爸爸星期三开车行驶了________千米.(3)淘气的爸爸在星期________开车行驶的里程数最多.11.某商场按“每满100元减30元”的方式搞促销活动,就是在总价中取________元部分,每个________元减去________元,不满100元的部分________.12.在一条笔直的公路上,有两个骑车人从相差500米的A 、B 两地同时出发.甲从A 地出发,每分钟行使600米,乙从B 地出发,每分钟行使500米.经过________分钟两人相距2500米.13.把247153400+=,730400330-=这两个算式合并成一个算式是________.14.比360多187的数是________,425比166多________.15.在横线上填上“>”“<”或“=”.187352120+-________300605276128--________()605276128-+864632107-+________400()63014575-+________63014575-+三、判断题.(对的打“√”,错的打“×”)16.最大的三位数和最大的两位数的和是1088.( )17.被减数不变,减数增加100,差也增加100.( )18.水果店有250千克梨,比苹果多25千克,水果店里的梨和苹果一共有275千克.()19.74268742702-=-+.( )20.798与567的差再加上234,最后的结果是456.()四、计算题.21.口算.181201+=318105-=663323-=319181+=27399-=492192-=490201+=241159+=365123+=198242+=400340-=203207+=278103+=257243-=800795-=475525+=22.脱式计算.694295117+-()473107293-+80017283--105432295++505295395-+()876276295-+五、解答题.23.晓军准备参加某市小学生运动会,爸爸到商场帮他购买运动套装(鞋、衣、裤).商品鞋衣裤单价215元288元176元(1)晓军的爸爸大约应该准备多少钱才够呢?(2)收银员应收多少钱?24.为了迎接2022年北京冬奥会,全民积极参加到冬季运动中来,滑雪场上,上午来了265人,中午有162人离开,同时又来了334人,这时滑雪场上一共有多少人?25.“四季春”花店第一天的营业额是468元,第二天上午的营业额是244元,下午的营业额是156元.这两天的营业额一共是多少元?26.一辆汽车以每时60千米的速度从甲地开往乙地,4时可以到达;如果返回时每时行驶80千米,几时可以到达?27.王叔叔想换一部新手机,但是他现在只有900元.商场允许他支付880元后立刻得到一部新手机(如图),余下的部分需要每个月付280元.王叔叔需要几个月能全部付清?28.电器城国庆节搞促销活动,李阿姨买了一台价格为1899元的洗衣机,先付了900元,余下的用信用卡分期付款,每月付350元,几个月能全部付清?29.明明的叔叔是一名出租车司机,星期一早上出车时,里程表的读数是65千米,下表记录了叔叔星期一到星期五每天回家时的里程表读数.(单位:千米)星期一星期二星期三星期四星期五148375486651856(1)哪天行驶的里程数最多?哪天最少?(2)叔叔星期一到星期五共行驶了多少千米?第三单元测试答案一、1.【答案】C 2.【答案】B 3.【答案】C 4.【答案】D 5.【答案】C 二、6.【答案】1957.【答案】1108.【答案】6259.【答案】44010.【答案】(1)35(2)38(3)五11.【答案】100 10030不优惠12.【答案】8211或9111或20或3013.【答案】()730247153330-+=14.【答案】547 25915.【答案】> =<<三、16.【答案】×17.【答案】×18.【答案】×19.【答案】√20.【答案】×四、21.【答案】382 213 340 500 174 300 691 400 488 440 60 410 381145100022.【答案】872 73500832605305五、23.【答案】(1)700元(2)679元24.【答案】437人25.【答案】868元26.【答案】3小时27.【答案】3个月28.【答案】()1899900999-=元()999350649-=元()649350299-=元299元<350元答:3个月能全部付清.(解法不唯一)29.【答案】(1)星期二行驶的里程数最多,星期一最少.(2)叔叔星期一到星期五共行驶了791千米.。
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Part 2 Vocabulary and Structure(Each item: 1)Directions:Choose the best answer from the four choices marked A, B, C and D.11.The football match had to be _________ owing to (由于) the bad weather.A. cancelledB. advancedC. arrangedD. held12.The starter (赛跑发令员) gave the ________ for the race to begin.A. adviceB. signalC. glowD. attention13.This lovely old town has a _________ you couldn't find in a big city.A. conditionB. standardC. situationD. charm14.They were under the _________ that the company was doing well, but in fact it was inserious trouble.A. conclusionB. expressionC. enjoymentD. illusion15.We watched the plane _________ behind the clouds.A. disappearingB. disappearedC. divingD. dived16.The local government tried its best to ensure each of its citizens a _________ supply of foodat regular intervals (时间间隔).A. consistentB. continualC. continuousD. numerous17.It was difficult to guess what her ________ to the news would be.A. reactionB. excitementC. impressionD. opinion18.Sally has made a complete _______ influenza (流行性感冒).A. pass byB. decision againstC. recovery fromD. care of19. A teacher should always be thoughtful _______ what's best for his pupils.A. inB. byC. ofD. at20.To increase our working efficiency, it is necessary to _______ every moment we have.A. include inB. keep fromC. take advantage ofD. look up toPart 3 Cloze (with Options)(Each item: 1)Directions:Read the following passage carefully and choose the best answer from thechoices.Questions 21 to 40 are based on the following passage.I didn't marry for love, money, or looks; I married for my parents. I was 21.22.parents. It is common 23.unmarried and 24.25."catch a man".I didn't even 26.that a 27.twenty-five, I fell in love with a good man —this is all a secret my husband doesn't 28.29.have the same 30.31.resistance when I 32.33.her 34.asked me to run away with him I 35.36.37.idea. It wasn't 38.39.marriage after that.I am now thirty and have a child. My husband is a lawyer and a 40.man. Occasionally, I email the man I didn't marry.Part 4 Translation from English to Chinese(Each item: 1)Directions:Translate the following sentences from English to Chinese.41.Children are never too afraid to tell the truth.42.Lucy, a daughter of a poor and ignorant miner, was born in a small town of North America.43.We need to work out how much money we'll need to take with us.44.These are things to be proud of, but they have nothing to do with rank or class.45.They are protected from head to toe with face masks, caps, and white clothing.Part 5 Reading Comprehension (Multiple Choice)(Each item: 1)Directions:Read the following passages carefully and choose the best answer from the four choices marked A, B, C and D.Questions 46 to 50 are based on the same passage or dialog.Coffee is one of the most popular (流行的) drinks throughout the world today. In fact, according to some estimates, over 30% of all adults in the world drink coffee at least once a day on the average.Coffee contains a kind of drug called caffeine (咖啡因). Caffeine is a chemical that stimulates (刺激) the nerves of the body. Drinking coffee tends to make people a little bit more awake-at least for a short time―because of this stimulating effect on th e nervous system (系统). A cup of coffee has, on the average, about 3% caffeine in it.One story of the discovery of the coffee plant relates to this effect of caffeine. According to the story, coffee was discovered in East Africa. The story says that coffee was first found by a goat farmer named Kaldi. This was about the year 850.Kaldi was leading his animals through the mountains and the goats were stopping repeatedly to eat the plants near the path. Suddenly, some of the goats started jumping up and down in a very strange way.Kaldi figured out that the goats were acting this way because of the plants they were eating. Kaldi himself tried eating some of the green beans (豆荚) that the goats had been eating. He, too, felt the stimulating effect of the beans.Kaldi wanted to prove what had happened, so he picked some of the beans and took them back to his home village, where he told his story. The green bean got the name "Kaffa" and later "coffee" because the beans were discovered in a place called Kaffa in Africa.Then for years, people used to eat a few of the green Kaffa beans when they were in the mountains and needed extra energy to do their work. It was later found that the coffee beans could be picked and then dried until they turned brown, and then they could be stored. If the beans were dried and stored, they could be used at any time.46.What is caffeine?A. A kind of seed.B. A kind of plant.C. A kind of drug.D. A kind of nut.47.What is the purpose of drinking coffee?A. To become more awake.B. To become more healthy.C. To become more happy.D. To become more clever.48.Coffee was first found by a __________.A. doctorB. farmerC. druggist(药剂师)D. chemist(化学家)49.How did the goats react after eating the plants?A. They fell asleep.B. They could not find their way home.C. They started jumping up and down.D. They wanted to eat more.50.Why did the green bean get the name "Kaffa"?A. Because Kaldi loved his home village very much.B. Because Kaldi's goats loved the green bean very much.C. Because the beans were discovered in a place by this name.D. Because the beans could be picked and dried.Questions 51 to 55 are based on the same passage or dialog.A little noticed change has been taking place in our time-world. The arrival of digital (数字的) time has been changing the way we act and think. I believe that it has put us to a higher level of anxiety, with greater expectations of efficiency.The old, round, hand-moved time still kept a certain connection to the natural flow of things, to the roundness of the earth, and to the changes of light and seasons. Old, round time was outside ourselves, far enough removed from us so we could ignore it if we so chose.It is not so with digital time, which is a beat. It beats instead of turning. It makes a sound like the sound of the heart and thus places itself smoothly into the body. More and more, we mistake its regular beat for our own, thus mistaking the demands of the world for our wishes.Before wrist watches, time used to live in towers in the centers of towns. At that distance, it could be seen by everybody, but only if they so wished. It took an effort, an actual visit to "time". But then something happened. Time began to live with us, and now it is beginning to live in us.I remember what it was like to be a child, absorbed in the endlessly changeable thing of time. For me there was only child time, divided meaninglessly and quite painfully by the orders of the parents into Bedtime, Wakeup Time, and School Time. But within each of those divisions (分割), Eternity still ruled. Later, of course, they managed to infect me with the anxious demands of clock time. Very soon, all that remained was the anxiety of that which was exact. The fast beats of the timepiece (时钟) cut Eternity to pieces.Occasionally, I stop long enough to recall the times of childhood, but not often enough. Like everybody else, I am helpless before the new technologies. Time is a virus, and it is growing stronger.51.Digital time has changed how we act and think by ____________________.A. allowing us to work with more efficiencyB. giving us more time to do what we likeC. causing us to be more anxiousD. having us expect more of others52.The author thinks that the old clocks ____________________.A. are somehow linked with the seasonal changesB. stay closer to people than a digital watchC. are connected with human's handsD. work better than a wrist watch53.Before watches, clocks were located __________________.A. everywhere for everyone to seeB. wherever a person wishedC. on the wristD. in the center of town54.In the author's early childhood memory, _________________.A. time was a concrete thingB. time seemed to have no endC. he fought against his parents' idea of timeD. he enjoyed the anxiety of precision (精确)55.The author's attitude towards time in the modern world is ____________.A. positiveB. unclearC. negativeD. in the middleQuestions 56 to 60 are based on the same passage or dialog.Being a man has always been dangerous. There are about 105 males born for every 100 females. However, this number changes a great deal, and by the age of maturity (成熟), the number of young men is about the same as that of young women. And among 70-year old people, there are twice as many women as men. But this great universal (普遍性) truth is changing. Now, boy babies survive almost as well as girls do. This means that for the first time there will be too many boys in those crucial (至关紧要的) years when boys are searching for a mate. What is even more troubling is that the survival of so many boys has removed a chance for natural selection (选择) to do its work. Fifty years ago, the chance of a baby surviving depended on its weight. A kilogram too light or too heavy meant almost certain death. Today it makes almost no difference. Since much of the difference in weight is due to genes (基因), a force of change has gone.There is another way to commit evolutionary (进化的) suicide: stay alive, but have fewer children. Except in some religious communities, very few women have 15 children. Nowadays the number of births, like the age of death, has become average. Most of us have roughly the same number of children. Again, differences between people and the opportunity for natural selection to take advantage of it have disappeared.For us, this means that people will no longer experience the physical changes that other living things do; our bodies are as perfect as they are ever going to be. Strangely, we have been able to make great advancements without physical change. In the past 100,000 years—even the past 100 years—our lives have been transformed but our bodies have not. We managed to make such changes because of technology and social systems.Darwin had a phrase to describe those ignorant of the process of change; they "look at living beings like a dog looks at a ship, as at something wholly beyond their comprehension." No doubt we will be shocked at the ugliness of the 20th century way of life. But however amazed future people may be at how far from perfection we were, those future people will look just like us.56.According to the author, what was the danger a man had to face in the past?A. Lack of mates.B. Strong competition.C. Lower chance of living to maturity.D. Genes.57.The sentence "There is another way to commit evolutionary suicide" perhaps means_______________________________________.A. there is another way to stop the society from making progressB. you can kill yourself by another meansC. there is another factor to prevent us from evolvingD. we have to find a way to do something58.Women except _______________ are having relatively small numbers of children.A. those who live to be very oldB. those who live in religious communitiesC. those who have the advantage of technologyD. those who live in poor countries59.The author argues that our bodies have stopped evolving because____________________________.A. life has been improved by technological advancementB. the number of female babies has been decliningC. we have reached the highest stage of evolutionD. the difference between wealth and poverty (贫穷) is disappearing60.What is this passage mainly about?A. The change in the numbers of boys and girls.B. Ways of continuing man's evolution.C. The evolution future of nature.D. Human evolution going nowhere.。