限时专项训练1

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【浙江专版】2019一轮语文专题专项限时练1 高频文言实词含解析

专题专项限时练(一) 高频文言实词(建议用时：30分钟)第一组：当、故、举、属、易、除、察、善一、阅读下面的文言文，完成问题. 【导学号：26612123】萧燧字照邻，临江军人.燧生而颖异，幼能属文.绍兴十八年，擢进士高第.授平江府观察推官.时秦桧当．国，其亲党密告燧，秋试必主文①漕台，燧诘其故．，曰：“丞相有子就举．，欲以属．公.”燧怒曰：“初仕敢欺心耶！”桧怀之，既而被檄秀州，至则员溢，就院易．一员往漕闱，秦熺果中前列.孝宗初，除．诸王宫大小学教授.轮对，论“官当择人，不当为人择官”.上喜，制《用人论》赐大臣.淳熙二年，进起居郎.先是，察．官阙，朝论多属燧，以未历县，遂除左司谏.时宦官甘昪之客胡与可、都承旨王抃之族叔秬皆持节于外，有所依凭，无善．状，燧皆奏罢之.(节选自《宋史·萧燧传》，有删改) 【注】①主文：主持考试.1．与“时秦桧当．国”的“当”意义相同的一项是(3分) ()A．料大王士卒足以当．项王乎B．北邀当．国者相见C．公等遇雨，皆已失期，失期当．斩D．一夫当．关，万夫莫开B[文中的“当”意为“主持、执掌”，B项与之相同.A项，动词，抵御、抵挡.C项，动词，判决、判罪.D项，动词，占据、把守.]2．与“燧诘其故．”的“故”意义相同的一项是(3分) ()A．既克，公问其故．B．君安与项伯有故．C．公子往，数请之，朱亥故．不复谢D．弟走从军阿姨死，暮去朝来颜色故．A[文中“故”为名词，原因，A项与之相同.B项，名词，交情，老朋友.C 项，副词，故意，特意.D项，形容词，旧，老.]3．与“丞相有子就举．”的“举”意义相同的一项是(3分)()A．戍卒叫，函谷举．B．举．孝廉不行，连辟公府不就C．杀人如不能举．，刑人如恐不胜D．今亡亦死，举．大计亦死B[文中“举”意为“推荐、选拔考试”，B项与之相同.A项，动词，占领、攻破.C项，副词，尽、全.D项，动词，施行、举行.]4．与“欲以属．公”的“属”意义用法相同的一项是(3分) ()A．举酒属．客，诵明月之诗B．燧生而颖异，幼能属．文C．不者，若属．皆且为所虏D．属．予作文以记之D[文中的“属”意为“嘱咐、嘱托”，D项与之相同.A项动词，邀请、劝酒.B项，动词，连缀、撰写.C项，名词，等、辈.]5．与“就院易．一员往漕闱”的“易”意义用法相同的一项是(3分)()A．秦王以十五城请易．寡人之璧，可予不B．世易．时移，变法宜矣C．是以古之易．财，非仁者，财多也D．二月草已芽，八月苗未枯，采掇者易．辨识耳B[文中“易”意为“更换、改变”，B项与之相同.A项，动词，交换.C 项，动词，轻视、看不起.D项，形容词，容易.]6．与“除．诸王宫大小学教授”的“除”意义用法相同的一项是(3分) ()A．攘除．奸凶，兴复汉室B．赵王扫除．自迎C．寻蒙国恩，除．臣洗马D．爆竹声中一岁除．C[文中的“除”意为“拜官授职”，C项与之相同.A项，动词，清除，去掉.B项，名词，(宫殿的)台阶.D项，动词，逝去，过去.]7．与“察．官阙，朝论多属燧”的“察”意义用法相同的一项是(3分) () A．明足以察．秋毫之末B．水至清则无鱼，人至察．则无徒C．向察．众人之议，专欲误将军D．虽不能察．，必以情C[文中的“察”意为“考察，审察”，C项与之相同.A项，动词，看清楚.B项，精明.D项，动词，明察，了解，弄清楚.]8．与“无善．状，燧皆奏罢之”的“善”意义用法相同的一项是(3分)()A．积善．成德，而神明自得B．素善．留侯张良C．君子生非异也，善．假于物也D．工欲善．其事，必先利其器A[文中的“善”意为“好事，好的行为”，A项与之相同.B项交好，友善.C项，擅长，善于.D项，做好，处理好. ]第二组：造、固、殆、被、莫、假、少、何、却二、阅读下面的文言文，完成问题. 【导学号：26612124】李疑者，居通济门外，闾巷子弟执业①造．其家，得粟以自给.固．贫甚，然独好周人急.金华范景淳吏吏部，得疾，无他子弟.人殆．之，不肯舍.杖踵疑门，告曰：“我不幸被．疾，人莫．舍我.闻君义甚高，愿假．榻.”疑许诺.延就坐，汛室②，具床褥炉灶居之.征医师视脉，躬为煮糜炼药，旦暮执手问所苦.既而疾滋甚，不能起，溲矢污衾席，臭秽不可近.疑日为刮摩浣涤，不少．见颜面.景淳流涕曰：“我累君矣.恐不复生，无以报厚德，囊有黄白金四十余两，在故旅邸，愿自取之.”疑曰：“患难相恤，人理宜尔，何．以报为！”景淳曰：“君脱不取，我死，恐为他人得，何益？”疑遂求其里人偕往，携以归.面发囊，志其数而封识之.数日，景淳竟死，疑出私财买棺，殡于城南聚宝山.举所封囊寄其里人家，往书召其二子.及二子至，疑同发棺取囊，按籍而还之.二子以半馈，却．弗受，反赆以货，遣归.(节选自《文宪集·李疑传》) 【注】①执业：指捧书求教，犹言受业.②汛室：指打扫房间.9．与“闾巷子弟执业造．其家”的“造”意义相同的一项是(3分) ()A．径造．庐访成，视成所蓄B．公输般为楚造．云梯之械C．怀王使屈原造．为宪令D．因造．玉清宫，伐山取材A[文中的“造”为动词，意为“到，往”，A项与之相同.B项，动词，制作.C项，动词，制定.D项，动词，修建、建造.]10．与“固．贫甚，然独好周人急”的“固”意义相同的一项是(3分)()A．蔺相如固．止之B．至于颠覆，理固．宜然C．秦孝公据崤函之固．D．秦数败赵军，赵军固．壁不战B[文中的“固”为副词，本来，原来，B项与之相同.A项，形容词，坚决、坚持.C项，名词，险要的地势.D项，动词，坚守、安守.]11．与“人殆．之，不肯舍”的“殆”意义相同的一项是(3分)()A．知己知彼，百战不殆．B．骊元之所见闻，殆．与余同C．且燕赵处秦革灭殆．尽之际D．农者殆．则土地荒D[文中的“殆”同“怠”，意为“对……懈怠”，文中引申为“对……冷淡、冷漠”，D项与之相同.A项，形容词，危险.B项，大概、恐怕.C项，几乎、近乎.]12．与“我不幸被．疾”的“被”意义相同的一项是(3分) ()A．信而见疑，忠而被．谤，能无怨乎B．项王身亦被．十余创C．将军身被．坚执锐D．大雪逾岭，被．南越中数州B[文中的“被”为动词，意为“遭受、遇到、蒙受”，B项与之相同.A 项，介词，表示被动.C项，同“披”，穿在身上或披在身上.D项，动词，覆盖.]13．与“人莫．舍我”的“莫”意义相同的一项是(3分)()A．其事体莫．须有B．非刘豫州莫．可以当曹操者C．愿早定大计，莫．用众人之议也D．至莫．夜月明，独与迈乘小舟至绝壁下B[文中的“莫”为代词，意为“没有(谁)，没有(什么)”，B项与之相同.A 项，表测度，或许.C项，表禁止，不要.D项，同“暮”，日落的时候，傍晚.]14．与“闻君义甚高，愿假．榻”的“假”意义相同的一项是(3分) () A．君子生非异也，善假．于物也B．乃悟前狼假．寐，盖以诱敌C．假．令仆伏法受诛，若九牛亡一毛，与蝼蚁何以异D．以是人多以书假．余D[文中的“假”为动词，借，D项与之相同.A项，动词，凭借、借助.B 项，形容词，虚假、假装.C项，连词，相当于“如果”“假如”，多与“使”“令”连用.]15．与“疑日为刮摩浣涤，不少．见颜面”的“少”意义相同的一项是(3分) ()A．是故无贵无贱，无长无少．B．邻国之民不加少．C．生之者甚少．而靡之者甚多，天下财产何得不蹶D．太后之色少．解D[文中的“少”为副词，表程度，稍微、略微，D项与之相同.A项，少年、青年、年轻.B项，动词，削减、减少.C项，形容词，数量少，不多.] 16．与“人理宜尔，何．以报为”的“何”意义相同的一项是(3分)()A．大王来何．操B．君美甚，徐公何．能及君也C．豫州今欲何．至D．社稷之臣也，何．以伐为D[文中的“何以……为”为表反问的固定句式，D项与之相同.A项，代词，什么.B项，怎么.C项，代词，哪里、什么地方.]17．与“二子以半馈，却．弗受，反赆以货”的“却”意义相同的一项是(3分)()A．相如因持璧却．立B．后秦击赵者再，李牧连却．之C．却．之为不恭D．医得眼前疮，剜却．心头肉C[题干中的“却”为动词，意为“推却”，C项与之相同.A项，动词，退后；B项，动词，击退；D项，动词，除、去掉]第三组：鄙、解、既、期、辞、治、适、乃三、阅读下面的文言文，完成问题. 【导学号：26612125】贺钦，字克恭，世家定海，父孟员，以戎籍隶辽之义州卫.钦少颖敏，习举子业辄鄙．之曰：“为学止于是耶？”取《近思录》读之，有省.成化二年以进士授户科给事中.因亢旱上章极谏，复以言官旷职召灾，自劾求退.会陈献章被征来京师，钦听其论学，叹曰：“至性不显，真理犹霾，世即用我，而我奚以为用？”即日上疏解．官去，执弟子礼事献章.既．别，肖其像事之.其学专读《五经》、《四书》、小学，期．于反身实践，主敬以收放心.有来学者，辄辞．之曰：“己尚未治．，何以治人？”既而从游者甚众，磨砻淬厉，成其器业.如是者十余年，虽不出户庭，而达官贵人闻风仰德者，莫不躬拜床下.弘治改元，用阁臣荐，起为陕西右参议.玺书至而母适．病死，乃．上疏恳辞.(节选自清光绪五年《镇海县志》卷二十一《人物传二·明一》) 18．与“习举子业辄鄙．之曰”的“鄙”意义相同的一项是(3分) ()A．鄙．贱之人，不知将军宽之至此也B．孔子鄙．其小器C．蜀之鄙．有二僧，其一贫，其一富D．肉食者鄙．，未能远谋B[文中的“鄙”为动词，意为“轻视”，B项与之相同.A项，形容词，粗野而又地位低微.C项，名词，边界地方.D项，形容词，庸俗，见识浅.] 19．与“即日上疏解．官去”的“解”意义相同的一项是(3分)()A．庖丁为文惠君解．牛B．师者，所以传道受业解．惑也C．惑而不从师，其为惑也终不解．矣D．上心知公材，怜其枉，部议力持之，乃命解．官归里D[文中的“解”指辞官，D项与之相同.A项，动词，剖开，特指解剖动物的肢体.B项，动词，解释，解答.C项，动词，理解.]20．与“既．别，肖其像事之”的“既”意义相同的一项是(3分)()A．既．克，公问其故B．肴核既．尽，杯盘狼籍C．既．来之，则安之D．既．无伯叔，终鲜兄弟A[文中的“既”为副词，表时间的过去或动作的完成，已经……以后，A 项与之相同.B项，副词，表范围，全、都.C项，连词，既然.D项，连词，“既……终……”表两种情况同时存在.]21．与“期．于反身实践，主敬以收放心”的“期”意义相同的一项是(3分) ()A．期．年之后，虽欲言，无可进者B．会天大雨，道不通，度已失期．C．期．曰：“暮见火举而俱发.”D．良剑期．乎断，不期乎镆铘D[文中的“期”为动词，意为“希望，目的在于……”，D项与之相同.A 项，名词，一周(年)，一整(月).B项，名词，限定或约定的时间.C项，动词，约定.]22．与“有来学者，辄辞．之曰”的“辞”意义相同的一项是(3分) () A．君子疾夫舍曰欲之而必为之辞．B．臣死且不避，卮酒安足辞．C．博闻强志，明于治乱，娴于辞．令D．秦王恐其破璧，乃辞．谢B[文中的“辞”为动词，意为“推辞”，B项与之相同.A项，名词，托词，借口.C项，名词，辞令，应酬的言辞.D项，动词，辞谢，婉言道歉.]23．与“己尚未治．，何以治人”的“治”意义相同的一项是(3分)()A．故治．国无法则乱B．不效则治．臣之罪C．博闻强志，明于治．乱，娴于辞令D．今治．水军八十万众，方与将军会猎于吴A[文中的“治”意为“管理，治理”，A项与之相同.B项，动词，惩处，处置.C项，形容词，太平，安定，与“乱”相对.D项，动词，整治，训练.] 24．与“玺书至而母适．病死”的“适”意义相同的一项是(3分) ()A．从上观之适．与地平B．向晚意不适．，驱车登古原C．余自齐安舟行适．临汝D．处分适．兄意，那得自任专A[文中的“适”意为“恰巧”，A项与之相同.B项，形容词，舒适，满足.C项，动词，往，到.D项，动词，顺从，适合.]25．与“乃．上疏恳辞”的“乃”意义相同的一项是(3分)()A．尔其无忘乃．父之志B．今其智乃．反不能及C．乃．令张仪佯去秦，厚币委质事楚D．若事之不济，此乃．天也C[文中的“乃”为连词，于是，就，C项与之相同.A项，代词，你，你的.B项，竟然，却.D项，是，就是.]第四组：奇、坐、许四、阅读下面的文言文，完成问题.周字伯仁，少有重名，神采秀彻.司徒掾贲嵩有清操，见，叹曰：“汝颍固多奇．士！自顷雅道陵迟，今复见周伯仁，将振起旧风，清我邦族矣.”从弟穆亦有美誉，欲陵折，陶然弗与之校，于是人士益宗附之.弱冠，袭父爵武城侯.中兴建，位至吏部尚书.顷之，以醉酒，复坐．门生斫伤人，免官.太兴初，更拜太子少傅，尚书如故.上疏让曰：“臣退自循省，学不通一经，智不效一官，止足良难，未能守分；遂忝显任，名位过量.”固辞不受，帝诏不许．.(节选自《晋书·列传第三十九》)26．与“汝颍固多奇．士”的“奇”意义相同的一项是(3分)()A．以事秦之心礼天下之奇．才B．大将军邓骘奇．其才C．奇．文共欣赏，疑义相与析D．此奇．货可居A[文中的“奇”意为“奇特的、罕见的、不平常的”，A项与之相同.B 项，以……为奇，惊异.C项，佳、好、宜.D项，珍贵的.]27．与“以醉酒，复坐．门生斫伤人”的“坐”意义相同的一项是(3分)()A．因击沛公于坐．B．与其坐．而待亡，孰若起而拯之C．齐人也，坐．盗D．停车坐．爱枫林晚C[文中的“坐”意为“犯罪，判罪”，C项与之相同.A项，名词，同“座”，座位.B项，动词，坐守.D项，因为、由于.]28．与“固辞不受，帝诏不许．”的“许”意义相同的一项是(3分)()A．均之二策，宁许．以负秦曲B．塞上长城空自许．，镜中衰鬓已先斑C．不知何许．人也D．高可二黍许．A[文中的“许”意为“答应，允许”，A项与之相同.B项，动词，期望.C 项，处所.D项，表示约数.]。

有理数专项训练(一)(通用版)(含答案)

有理数专项训练（一）（通用版）试卷简介:有理数混合运算中几个因数相乘、乘方和乘法分配律一、单选题(共15道，每道6分)1.计算的结果为( )A. B.C.2D.6答案：D解题思路：解答过程：原式=4+2=6故选D．试题难度：三颗星知识点：有理数混合运算2.计算的结果为( )A.4B.2C. D.答案：A解题思路：解答过程：故选A．试题难度：三颗星知识点：有理数混合运算3.计算的结果为( )A.13B.C. D.19答案：B解题思路：解答过程：故选B．试题难度：三颗星知识点：有理数混合运算4.计算的结果为( )A.-2B.-26C.-10D.8答案：C解题思路：解答过程：原式=-9-(-3-8+12)=-9+3+8-12=-10试题难度：三颗星知识点：有理数混合运算5.计算的结果为( )A.10B.26C.12D.28答案：D解题思路：解答过程：原式==6+1+21=28试题难度：三颗星知识点：有理数混合运算6.计算的结果为( )A.14B.-2C.-18D.-22答案：C解题思路：解答过程：原式=-8-8+18+10-30=-18试题难度：三颗星知识点：有理数混合运算7.计算的结果为( )A.5B.C.7D.答案：C解题思路：解答过程：故选C．试题难度：三颗星知识点：有理数混合运算8.计算的结果为( )A. B.C. D.答案：B解题思路：解答过程：故选B．试题难度：三颗星知识点：有理数混合运算9.计算的结果为( )A.39B.41C. D.答案：A解题思路：解答过程：故选A．试题难度：三颗星知识点：有理数混合运算10.计算的结果为( )A.-20B.20C.-85D.答案：B解题思路：解答过程：试题难度：三颗星知识点：有理数混合运算11.计算的结果为( )A. B.C. D.答案：C解题思路：解答过程：试题难度：三颗星知识点：有理数混合运算12.计算的结果为( )A.1B.6C.-6D.答案：A解题思路：解答过程：试题难度：三颗星知识点：有理数混合运算13.计算的结果为( )A.7B.11C.-3D.1答案：A解题思路：解答过程：试题难度：三颗星知识点：有理数混合运算14.计算的结果为( )A.-2B.-56C.-16D.2答案：C解题思路：解答过程：试题难度：三颗星知识点：有理数混合运算15.计算的结果为( )A.-11B.11C.-1D.-89答案：B解题思路：（1）考点：乘方运算，乘法分配率，有理数的除法（2）解题过程：解：原式=11（3）易错点：①搞不清楚和的指数管辖范围，中的指数不管“-”号，中的指数管“-”号；②应用乘法分配律计算时，系数乘以每一项；③括号前面有负号时，注意符号变化；④负号重复使用，式子中前面的负号误用两次，只能用一次，要么作为负号和4结合在一起，要么作为减号.试题难度：三颗星知识点：有理数混合运算。

人教版八年级上册第15章《分式方程应用》专项综合训练(六)

《分式方程应用》专项综合训练（六）限时训练（一）：限时60分钟1．新冠肺炎疫情发生后，全社会积极参与疫情防控工作，某市为了尽快完成100万只口罩的生产任务，现安排甲、乙两个工厂完成．已知甲厂每天能生产口罩的数量是乙厂每天能生产口罩的数量的1.5倍，并且在独立完成48万只口罩的生产任务时，甲厂比乙厂少用4天．（1）甲、乙两个工厂每天分别生产多少万只口罩？（2）若甲厂每天生产成本为3万元，乙厂每天生产成本为2.4万元，要使这批口罩的生产总成本不高于57万元，至少安排甲厂生产多少天？2．春节即将来临，根据习俗好多家庭都会在门口挂红灯笼和贴对联．某商店看准了商机，准备购进批红灯笼和对联进行销售，已知红灯笼的进价是对联进价的2.25倍，用720元购进对联的数量比用540元购进红灯笼的数量多60件（1）对联和红灯笼的进价分别为多少？（2）由于销售火爆，第一批售完后，该商店以相同的进价再购进300幅对联和200个红灯笼．已知对联的销售价格为12元一幅，红灯笼的销售价格为24元一个．销售一段时间后发现对联售出了总数的，红灯笼售出了总数的．为了清仓，该店老板决定对剩下的红灯笼和对联以相同的折扣数打折销售，并很快全部售出，问商店最低打几折，才能使总的利润率不低于20%？3．某商场第一次用22000元购进某款智能清洁机器人进行销售，很快销售一空，商家又用48000元第二次购进同款智能清洁机器人，所购进数量是第一次的2倍，但单价贵了10元．（1）求该商家第一次购进智能清洁机器人多少台？（2）若所有智能清洁机器人都按相同的标价销售，要求全部销售完毕的利润率不低于20%（不考虑其它因素），那么每台智能清洁机器人的标价至少是多少元？4．“绿水青山就是金山银山”，随着生活水平的提高，人们对饮水品质的需求越来越高，岳阳市槐荫公司根据市场需求代理A，B两种型号的净水器，每台A型净水器比每台B型净水器进价多200元，用5万元购进A型净水器与用4.5万元购进B型净水器的数量相等．（1）求每台A型、B型净水器的进价各是多少元？（2）槐荫公司计划购进A，B两种型号的共50台进行试销，购买资金不超过9.8万元试求最多可以购买A型净水器多少台？5．某校开学初在超市购进A、B两种品牌的消毒液，购买A品牌消毒液花费了2500元，购买B品牌消毒液花费了2000元，且购买A品牌消毒液数量是购买B品牌消毒液数量的2倍．已知购买一瓶B品牌消毒液比购买一瓶A品牌消毒液多花30元．（1）购买一瓶A品牌、一瓶B品牌消毒液各需多少元？（2）该校为了防疫，决定再次购进A、B两种品牌的消毒液共50瓶，恰逢超市对这两种品牌消毒液的售价进行调整，A品牌消毒液售价比第一次购买时提高了8%，B品牌消毒液按第一次购买时售价的9折出售，如果该校此次购买的总费用不超过3200元，那么，最多可以购买多少瓶B品牌消毒液？6．时代天街某商场经营的某品牌书包，6月份的销售额为20000元，7月份因为厂家提高了出厂价，商场把该品牌书包售价上涨20%，结果销量减少50个，使得销售额减少了2000元．（1）求6月份该品牌书包的销售单价；（2）若6月份销售该品牌书包获利8000元，8月份商场为迎接中小学开学做促销活动，该书包在6月售价的基础上一律打八折销售，若成本上涨5%，则销量至少为多少个，才能保证8月份的利润比6月份的利润至少增长6.25%？7．有一项工程，乙队单独完成所需的时间是甲队单独完成所需时间的2倍，若两队合作4天后，剩下的工作甲单独做还需要6天完成．（1）求甲、乙两队单独完成这项工程各需多少天；（2）若甲队每天的报酬是1万元，乙队每天的报酬是0.3万元，要使完成这项工程时的总报酬不超过9.6万元，甲队最多可以工作多少天？8．2019年8月，因暴雨某县受灾，某市抗灾基金会组织一批救灾物资用15列车厢组成的一列火车运到该县，两地相距180km，为了更快的到达目的地．列车以原速的1.5倍行驶，这样提前了半小时到达．（1）求提速后列车的速度；（2）若车厢分A、B两种组成，每个A种车厢能运送5万元的救灾物资，每个B种车厢能运送7万元的救灾物资，总物资不低于是85万，那么最多可安排多少个A种车厢？9．某公司开发的720件新产品，需加工后才能投放市场．现有甲、乙两个工厂都想加工这批产品，已知甲工厂单独加工完成这批产品比乙工厂单独加工完成这批产品多用20天，而乙工厂的工作效率是甲工厂的1.5倍；在加工过程中，公司需每天支付80元劳务费请工程师到厂进行技术指导．（1）求甲、乙两个工厂每天各能加工多少件新产品？（2）该公司要选择省时又省钱的工厂加工，如果甲工厂向公司报加工费用为每天600元，请问：乙工厂向公司报加工费用每天最多为多少元时，才可满足公司要求，有望加工这批产品．10．冰封文教用品商店欲购进A、B两种笔记本，用160元购进的A种笔记本与用240元购进的B种笔记本数量相同，每本B种笔记本的进价比每本A种笔记本的进价贵10元．（1）求A、B两种笔记本每本的进价分别为多少元；（2）若该商店A种笔记本每本售价24元，B种笔记本每本售价35元，准备购进A、B 两种笔记本共100本，且这两种笔记本全部售出后总获利不小于468元，则最多购进A 种笔记本多少本？限时训练（二）：限时20分钟11．澜鑫商场为“双十一购物节”请甲乙两个广告公司布置展厅，已知乙单独完成此项任务的天数是甲单独完成此任务天数的2倍．若两公司合作4天，再由甲公司单独做3天就可以完成任务．（1）甲公司与乙公司单独完成这项任务各需多少天？（2）甲公司每天所需费用为5万元，乙公司每天所需费用为2万元，要使这项工作的总费用不超过40万元，则甲公司至多工作多少天？12．“垃圾分一分，环境美十分”某中学为更好地进行垃圾分类，特购进A，B两种品牌的垃圾桶，购买A品牌垃圾桶花费了4000元，购买B品牌垃圾桶花费了3000元，且购买A 品牌垃圾桶数量是购买B品牌垃圾桶数量的2倍，已知购买一个B品牌垃圾桶比购买一个A品牌垃圾桶多花50元．（1）求购买一个A品牌、一个B品牌的垃圾桶各需多少元？（2）该中学决定再次购进A，B两种品牌垃圾桶共20个，恰逢百货商场对两种品牌垃圾桶的售价进行调整，A品牌垃圾桶按第一次购买时售价的九折出售，B品牌垃圾桶售价比第一次购买时售价提高了10%，如果这所中学此次购买A，B两种品牌垃圾桶的总费用不超过2550元，那么该学校此次最多可购买多少个B品牌垃圾桶？13．国庆70华诞期间，各超市购物市民络绎不绝，呈现浓浓节日气氛．“百姓超市”用320元购进一批葡萄，上市后很快脱销，该超市又用680元购进第二批葡萄，所购数量是第一批购进数量的2倍，但进价每市斤多了0.2元．（1）该超市第一批购进这种葡萄多少市斤？（2）如果这两次购进的葡萄售价相同，且全部售完后总利润不低于20%，那么每市斤葡萄的售价应该至少定为多少元？14．某手机店老板到电子批发市场选购A、B两种型号的手机，A型手机比B型手机每套进价高200元，同样用6000元采购A型、B型手机时，B型手机比A型手机多1台．（1）求A、B两种手机进价分别为多少元？（2）该A型手机每台售价为1800元，B型手机每台售价为1500元，手机店老板决定，购进B型手机的数量比购进A型手机的数量的2倍少3台，两种手机全部售完后，总获利超过12800元，问最少购进A型手机多少台？15．为全面推进“三供一业”分离移交工作，甲、乙两个工程队承揽了某社区2400米的电路管道铺设工程．已知甲队每天铺设管道的长度是乙队毎天铺设管道长度的1.5倍，若两队各自独立完成1200米的铺设任务，则甲队比乙队少用10天．（1）求甲、乙两工程队每天分别铺设电路管道多少米；（2）若甲队参与该项工程的施工时间不得超过20天，则乙队至少施工多少天才能完成该项工程？参考答案1．解：（1）设乙工厂每天生产x万只口罩，则甲工厂每天生产1.5x万只口罩，依题意，得：﹣＝4，解得：x＝4，经检验，x＝4是原方程的解，且符合题意，∴1.5x＝6．答：甲工厂每天生产6万只口罩，乙工厂每天生产4万只口罩．（2）设安排甲工厂生产m天，则安排乙工厂生产天，依题意，得：3m+2.4×≤57，解得：m≥5．答：至少安排甲厂生产5天．2．解：（1）设对联的进价为x元，则红灯笼的进价为2.25x元，依题意，得：﹣＝60，解得：x＝8，经检验，x＝8是原方程的解，且符合题意，∴2.25x＝18．答：对联的进价为8元，红灯笼的进价为18元．（2）设商店对剩下的商品打y折销售，依题意，得：12×300×+24×200×+12××300×（1﹣）+24××200×（1﹣）﹣8×300﹣18×200≥（8×300+18×200）×20%，整理，得：240y≥1200，解得：y≥5．答：商店最低打5折，才能使总的利润率不低于20%．3．解：（1）设该商家第一次购进智能清洁机器人x台，则第二次购进智能清洁机器人2x 台，依题意，得：﹣＝10，解得：x＝200，经检验，x＝200是原方程的解，且符合题意．答：该商家第一次购进智能清洁机器人200台．（2）设每台智能清洁机器人的标价为y元，依题意，得：（200+200×2）y﹣（22000+48000）≥（22000+48000）×20%，解得：y≥140．答：每台智能清洁机器人的标价至少为140元．4．解：（1）设每台B型净水器的进价是x元，则每台A型净水器的进价是（x+200）元，依题意，得：＝，解得：x＝1800，经检验，x＝1800是原方程的解，且符合题意，∴x+200＝2000．答：每台A型净水器的进价是2000元，每台B型净水器的进价是1800元．（2）设购买A型净水器y台，则购买B型净水器（50﹣y）台，依题意，得：2000y+1800（50﹣y）≤98000，解得：y≤40．答：最多可以购买A型净水器40台．5．解：（1）设购买一瓶A品牌消毒液需x元，则购买一瓶B品牌消毒液需（x+30）元，依题意，得：＝2×，解得：x＝50，经检验，x＝50是原方程的解，且符合题意，∴x+30＝80．答：购买一瓶A品牌消毒液需50元，一瓶B品牌消毒液需80元．（2）设购买m瓶B品牌消毒液，则购买（50﹣m）瓶A品牌消毒液，依题意，得：50×（1+8%）（50﹣m）+80×0.9m≤3200，解得：m≤27．又∵m为正整数，∴m的最大值为27．答：最多可以购买27瓶B品牌消毒液．（1）设6月份该品牌书包的销售单价为x元，则7月份该品牌书包的销售单价为（1+20%）6．解：x元，依题意，得：﹣＝50，解得：x＝100，经检验，x＝100是原方程的解，且符合题意．答：6月份该品牌书包的销售单价为100元．（2）6月份该品牌书包的销售数量为20000÷100＝200（个），6月份该品牌书包的进价为（20000﹣8000）÷200＝60（元）．设8月份该品牌书包的销售数量为y个，依题意，得：[100×0.8﹣（1+5%）×60]y≥8000×（1+6.25%），解得：y≥500．答：销量至少为500个时，才能保证8月份的利润比6月份的利润至少增长6.25%．7．解：（1）设甲队单独完成这项工程需要x天，则乙队单独完成这项工程需要2x天，依题意，得：+＝1，解得：x＝12，经检验，x＝12是原方程的解，且符合题意，∴2x＝24．答：甲队单独完成这项工程需要12天，乙队单独完成这项工程需要24天．（2）设甲队工作m天，则乙队工作天，依题意，得：m+0.3×≤9.6，整理，得：0.4m≤2.4，解得：m≤6．答：甲队最多可以工作6天．8．解：（1）设提速前列车的速度为xkm/h，则提速后列车的速度为1.5xkm/h，依题意，得：﹣＝0.5，解得：x＝120，经检验，x＝120是所列分式方程的解，且符合题意，∴1.5x＝180．答：提速后列车的速度为180km/h．（2）设安排m个A种车厢，则安排（15﹣m）个B种车厢，依题意，得：5m+7（15﹣m）≥85，解得：m≤10．答：最多可安排10个A种车厢．9．解：（1）设甲工厂每天加工x件，则乙工厂每天加工1.5x件，依题意，得：﹣＝20，解得：x＝12，经检验，x＝12是原分式方程的解，且符合题意，∴1.5x＝18．答：甲工厂每天加工12件，乙工厂每天加工18件．（2）甲工厂的加工总费用为（600+80）×＝40800（元）．设乙工厂向公司报加工费用每天y元，则乙工厂的价格总费用为×（y+80）＝40（y+80）元，依题意，得：40（y+80）≤40800，解得：x≤940．答：乙工厂向公司报加工费用每天最多为940元时，可满足公司要求，有望加工这批产品．10．解：（1）设A种笔记本每本的进价为x元，则B种笔记本每本的进价为（x+10）元，依题意，得：＝，解得：x＝20，经检验，x＝20是原方程的解，且符合题意，∴x+10＝30．答：A种笔记本每本的进价为20元，B种笔记本每本的进价为30元．（2）设购进A种笔记本m本，则购进B种笔记本（100﹣m）本，依题意，得：（24﹣20）m+（35﹣30）（100﹣m）≥468，解得：m≤32．答：最多购进A种笔记本32本．11．解：（1）设甲公司单独完成这项任务需要x天，则乙公司单独完成这项任务需要2x 天，依题意，得：+＝1，解得：x＝9，经检验，x＝9是原方程的解，且符合题意，∴2x＝18．答：甲公司单独完成这项任务需要9天，乙公司单独完成这项任务需要18天．（2）设甲公司工作m天，则乙公司工作＝（18﹣2m）天，依题意，得：5m+2（18﹣2m）≤40，解得：m≤4．答：甲公司至多工作4天．12．解：（1）设购买一个A品牌垃圾桶需x元，则购买一个B品牌垃圾桶需（x+50）元，依题意，得：＝2×，解得：x＝100，经检验，x＝100是原方程的解，且符合题意，∴x+50＝150．答：购买一个A品牌垃圾桶需100元，购买一个B品牌垃圾桶需150元．（2）设该学校此次购买m个B品牌垃圾桶，则购买（20﹣m）个A品牌垃圾桶，依题意，得：100×0.9（20﹣m）+150×（1+10%）m≤2550，解得：m≤10．答：该学校此次最多可购买10个B品牌垃圾桶．13．解：（1）设该超市第一批购进这种葡萄x市斤，则第二批购进这种葡萄2x市斤，依题意，得：﹣＝0.2，解得：x＝100，经检验，x＝100是原分式方程的解，且符合题意．答：该超市第一批购进这种葡萄100市斤．（2）设每市斤葡萄的售价应该定为y元，依题意，得：（100+100×2）y﹣320﹣680≥（320+680）×20%，解得：y≥4．答：每市斤葡萄的售价应该至少定为4元．14．解：（1）设A型手机进价为x元，则B型手机进价为（x﹣200）元，由题意得：+1＝解得：x1＝1200，x2＝﹣1000（不合题意，舍去），经检验：x＝1200是原分式方程的解，x﹣200＝1200﹣200＝1000，答：A、B两种手机进价分别为1200元、1000元；（2）设购进A型手机a台，则购进B型手机（2a﹣3）台，由题意得：（1800﹣1200）a+（1500﹣1000）（2a﹣3）＞12800，解得：a＞8，答：至少购进A型手机的数量是9台．15．解：（1）设乙队每天铺设电路管道x米，则甲队每天铺设电路管道1.5x米，依题意，得：．解得：x＝40，经检验，x＝40是原方程的解，且符合题意，∴1.5x＝1.5×40＝60．答：甲队每天铺设电路管道60米，乙队每天铺设电路管道40米．（2）设乙队施工m天正好完成该项工程，依题意，得：≤20，解得：m≥30．答：若甲队参与该项工程的施工时间不得超过20天，则乙队至少施工30天才能完成该项工程．。

小学数学六年级专项训练卷(一)

小学数学六年级专项训练卷（一）一、行程问题1、甲船从东港到西港要行4小时，乙船从西港到东港要行6小时。

（1）现在两船同时从东西两港相向而行，几小时相遇？（2）现在甲船先从东港开出1小时后，乙船才从西港开出，乙船开出几小时后与甲船相遇？（3）现在两船同时从东西两港相向而行，结果在离中点18千米处相遇，相遇时甲船行了多少千米？2、甲每小时走8千米，乙每小时走10千米。

两人同时、同地、同向面行，走了15分钟，乙忘带东西，返回原地取东西后立即追赶甲，问几小时可以追上甲？3、一列快车从甲站开往乙站，每小时行140千米。

一列慢车同时从乙站开往甲站，每小时行130千米。

两车在距中点20千米处相遇。

甲乙两站相距多少千米？4、甲乙两车分别从A、B两地同时相对开出，经过3小时在距中点60千米处相遇。

已知甲乙两车的速度比是3：5，A、B两地相距多少千米？5、甲乙两车分别从A、B两地同时相对开出，经过8小时相遇，相遇后两车继续行驶，6小时后甲车到达B站，乙车离A站还有240千米。

A、B两站相距多少千米？（两种方法解答）6、客、货两车同时从甲、乙两地相向而行，当客车行26千米时，货4时，货车已经到达甲地。

求车行了全程的12.5％；当客车行全程的5甲乙两地的路程。

7、快慢两车同时从A、B两地相对开出，4小时后，快车到达中点，慢车距中点还有60千米。

已知两车的速度比是10：9，A、B两地相距多少千米？8、如图，父子两人同时从A点出发沿着长方形ABCD的操场背向而11，两人在距中点24米的E点处相遇。

求行。

儿子的速度是父亲的14长方形操场的周长。

A CB E D9、一辆客车上午7时从甲城出发，以每小时40千米的速度向乙城驶去。

2小时后，一辆小轿车以每小时70千米的速度也从甲城出发向乙城驶去，当小轿车到达乙城时，客车距乙城还有100千米。

问小轿车是什么时间到达乙城的？10、甲乙两车同时从A、B两地的中点相背而行，4小时后，甲车到达A地，乙车离B地还有40千米，甲乙两车的速度比是5：4。

小学注意力专项训练题目

小学注意力专项训练题目一、视觉追踪训练1. 点连线：在一张纸上画出一系列不规则的点，要求学生用笔将这些点按顺序连接起来，注意不要重复或漏掉任何一个点。

2. 寻找隐藏物品：在一幅复杂的图画中隐藏一些小物品，让学生在限定时间内找出这些物品，并记录下来。

二、听觉注意力训练1. 听指令做动作：老师发出一系列指令，如“拍手”、“跺脚”、“举手”等，学生需要迅速做出相应的动作。

2. 听数字：老师随机报出一串数字，学生需要在听到后立即重复，注意不要漏掉任何一个数字。

三、记忆力训练1. 记忆卡片：展示一系列卡片，每张卡片上有不同的图案或数字，学生需要在限定时间内记住这些卡片的内容。

2. 记忆故事：老师讲述一个简短的故事，学生需要在听完后复述故事的主要情节。

四、专注力训练1. 静坐练习：让学生在安静的环境中静坐一段时间，期间不做任何动作，保持呼吸平稳，集中注意力。

2. 单一任务练习：给学生一个简单的任务，如涂色、拼图等，要求他们在完成这个任务的过程中不受外界干扰。

五、反应速度训练1. 快速反应游戏：老师随机喊出颜色或数字，学生需要迅速找到对应的物品或做出相应的动作。

2. 反应接力：学生分成小组，每组依次完成一个简单的任务，如跳绳、拍球等，然后传递给下一个人，要求在最短时间内完成。

六、逻辑思维训练1. 数字逻辑题：给出一系列数字，要求学生找出其中的规律，并预测下一个数字。

2. 图形逻辑题：展示一系列图形，要求学生根据图形的变化规律，推断出下一个图形的样子。

七、手眼协调训练1. 抛接球练习：学生需要用一只手抛球，然后用另一只手接住，注意控制力度和方向。

2. 穿针引线：给学生一根线和一根针，要求他们在最短时间内将线穿过针眼。

八、时间管理训练1. 限时任务：给学生一个任务，并规定完成时间，要求他们在规定时间内尽可能高效地完成任务。

2. 时间分配练习：让学生自己规划一天的时间，包括学习、休息、娱乐等，然后按照计划执行。

九、情绪控制训练1. 情绪识别：展示一系列表情图片，让学生识别并描述图片中人物的情绪。

三年级语文限时练习题

三年级语文限时练习题一、阅读理解1.以下哪个字的读音与其他三个不同？A. 学B.和C.好D.朋友2.下列词语中，哪一组词的读音有错？A. 眼镜、影像、象棋B.狗狗、海洋、课堂C.球场、小狗、数学D.苹果、坐车、笔记3.我国的传统节日中，农历十五日叫中秋节，你知道它是因为那一天特别吗？中秋节中的"中"在农历是指：A. 月圆的时候B. 小朋友的聚会C. 爸爸的生日D. 所有人的生日4.请认真阅读以下短文，根据短文内容判断正误。

小杰的妈妈是医生，妈妈每天都很忙，但是他还是能感受到妈妈对他的爱。

妈妈在他生病时给他吃药，陪他玩耍，也会给他洗衣服。

小杰很爱妈妈。

正确（）错误（）二、填字1.“请把门打___”，请填入正确的一词。

2.昨天小强生病了，妈妈给他喝了一杯___。

3.台灯的___坏了，不能正常发光。

三、从"B、b"里找出下列汉字的首字母。

1. 鲍：___2. 笔：___3. 包：___四、根据问题选择正确答案。

1. 下面哪个单词用“太”来修饰？A. 美丽B.高C.聪明D.冷2. “飘”的反义词是？A. 跑B.飞C.停D.散3. 石榴是一种常见的水果，它在口味上属于酸还是属于甜？A. 酸B.甜C.苦D.咸4. 下列字母有一个与其他三个不同的是：A. JB.漂C. KD. L五、选出合适的词组，完成句子。

（） 1. 我们可以用逗号隔开单词或词组之间。

（） 2. 一篇作文不能只写一句话。

（） 3. 图书馆是一个安静学习的地方。

（）4. 去学校时，我们要注意纪律。

（）5. 老师上课时，我们应该认真听讲。

六、作文根据以下提示，写一篇关于“我的假期”的作文。

提示：1. 介绍假期的开始和结束时间；2. 描述你在假期里做了什么；3. 说说最令你开心的事情；4. 假期里你有什么新的收获。

（提示词：假期、开始、结束、做、开心、收获）注意作文的格式，包括开头、结尾、段落等。

作文字数不少于80字。

计时法练习题

计时法练习题计时法是一种提高效率和管理时间的方法，通过规划和限制时间来增加工作和学习的效果。

计时法练习题是帮助人们锻炼时间管理技能和提高自我调节能力的实践工具。

以下是一套计时法练习题，让我们一起来尝试提高时间管理能力吧！练习一：专注力练习活动一：集中注意力设定一个时间，比如20分钟，选择一个任务，例如阅读一篇文章或是完成一项工作。

在规定的时间内，全神贯注地完成任务，不被其他事物干扰。

活动二：番茄钟法采用番茄钟法进行工作学习，每个番茄钟的时间为25分钟，之后休息5分钟。

持续完成番茄钟，直到任务完成。

练习二：任务分配练习活动一：任务计划选择一天的时间进行任务规划。

将任务按照重要性和紧急性进行分类，制定详细的工作计划，并设定每个任务的时间限制。

活动二：任务清单在每天开始工作前，制作一份任务清单。

将任务按照优先级排序，确保高优先级任务得到优先完成。

练习三：时间估算练习活动一：时间记录记录每项任务的完成时间，与预期完成时间进行对比，分析完成任务所需的时间是否符合预期。

通过时间记录，逐渐提高对任务完成时间的准确估算。

活动二：时间挑战选择一个任务，设定一个时间限制，并在规定时间内尽可能快速完成。

通过挑战，培养快速高效完成任务的能力。

练习四：自我约束练习活动一：限制娱乐时间设定一个娱乐时间的限制，如每天仅限定1小时的游戏时间或社交媒体时间。

逐渐减少娱乐时间，培养自我约束的能力。

活动二：短期目标设定设定一个短期目标，如一周内完成一项重要任务。

为了达成目标，进行时间约束，减少非必要的娱乐活动，提高工作效率。

通过以上的计时法练习题，我们可以不断锻炼和提高时间管理能力，从而提高工作效率和生活质量。

建议将计时法融入日常生活中，并结合个人情况进行适度调整，以达到最佳效果。

希望大家能够通过计时法获得更好的时间管理和自我管理能力！。

英语下册专项训练语法专练(一)习题课件

can’t learn the whole story.
A. copy
B. page
C. writer
D. reader
10. 【中考·山西】To keep our city beautiful, the ___B___ are
always very busy in the streets. We shouldn’t throw rubbish
the problem of ___A___ for many people.
A. hunger
B. health
C. pollution
D. population
19. 【中考·岳阳】We should brush our ___B___every day.
A. tooth
B. teeth
C. hand
二、单项选择。
1. 【中考·安徽】You can see the ___B____ in our faces when
we talk about the achievements in the past 70 years.
A. doubt
B. pride
C. regret
D. ability
2. 【中考·福建】—What should we do for the camping trip?
C. lab
D. kitchen
7. 【中考·青岛】— Lucy, how about going to the ___A__?
—Sounds great! Reading books can give us much pleasure.
A. library
B. cinema

(人教新目标)2022-2023学年度第二学期八年级英期中限时专项训练-语法填空

（人教新目标）2022-2023学年度第二学期八年级英期中限时专项训练-语法填空（限时30分钟，100分）1.阅读下面短文，在空白处填入一个适当的单词或括号内单词的适当形式。

Some people think that labor（劳动）is hard and ____1____（tired）. ____2____ I think labor is also sweet and happy. This is because I know the ____3____（mean）of labor.Labor is like a sweet cake. It makes you ____4____（feel）happy after doing hard and tiring jobs. Labor is also like bitter（苦的）fruit that makes you sad.Labor makes everything. No matter how poor ____5____ hard-working man is, he will have a rich day. No matter how rich a lazy man is, he will be poor one day. Labor brings us clothes, food and houses. We should always keep these ____6____（word）in mind. Labor makes a successful person. Lao She said, “if you don’t work, even your flower cannot live.”A man also said, “Working hard is the key to making money. So labor is the ____7____（great）matter in the world. ”The fun of labor is endless. When you use labor to do a good job for ____8____（you）and for others, your heart must be sweeter than honey. And you’ll be used to ____9____（live）a busy but full life. Then you can feel the joy of labor. People like to make friends____10____ those hard-working people. So we should work hard for ourselves!2.What would you do if you saw a mountain gorilla(大猩猩)? Most people would probably be very afraid ____11____ them and run away! That’s because mountain gorillas have ____12____ very terrible look. Firstly, mountain gorillas ____13____ (be) huge. They can grow up to 2 metres tall and can be more than 200 kilograms. Secondly, mountain gorillas can make a lot of noise. In fact, male mountain gorillas only do it ____14____ they are protecting their families.Mountain gorillas are very clever animals and they stay together in small family____15____ (group). The leader is the largest mountain gorilla, called the silverback(银背大猩猩). Mountain gorillas spend almost all of their time on the forest floor, eating and sleeping. Young mountain gorillas often play together. They run around and climb trees. At night the animals make room ____16____ (sleep) in. The lighter mountain gorillas sleep in trees. The____17____ (heavy) mountain gorillas make room on the ground and the babies sleep with____18____ (they) mothers. Mountain gorillas almost never attack(攻击) humans. They onlyfight when they or their children ____19____ (attack).Sadly, there are only about 1,000 mountain gorillas left in the wild. They are in____20____ (dangerous).3.阅读下面材料，在空白处填入适当的内容（个单词）或括号内单词的正确形式。

冀教版初中英语中考总复习专项练习试题专项训练一单项选择

第一部分名词1.（中考•孝感）Computers are very useful. They can help us get much on the Internet.A. gamesrmationC. courageD. message2.（中考•合肥）The New Silk Road will offer a good for more nations to communicate.A. chanceB. habitC. questionD. price3. —Could you give me a few _______ on how to spend the coming summer holidays?—OK. Let me see.A. hobbiesB. knowledgeC. suggestionsD. information4.（中考•邵阳）一Mom, please give me two. I want to make vegetable salad.—OK. Here you are.A. tomatoB. tomatoesC. tomatos5.（中考•襄阳改编）一What's your of English learning, Lin Tao?—I think watching English movies is helpful.A. placeB. ageC. timeD. secret6.（中考•白银）“It depends on my decision.” the mother said and looked at her twosons.A. childrenB. children'sC. childD. child's代词7.（中考•长沙）一Is there anybody who can lend me a hand?—I'm afraid not. You know, you are supposed to depend on __________ .A. myselfB. yourselfC. themselves8.（中考・上海）The headmaster introduced to the German visitors before the welcomeparty. A. we B. usC. ourD. ours9.（中考•上海）knowledge and experience are important to finish the task.A. EitherB. NeitherC. NoneD. Both10.（中考•上海）一Who lives together with your grandmother?—________ . She lives alone. I often go to see her.A. NobodyB. SomebodyC. AnybodyD. Everybody介词11.（中考•孝感）一Reading is a good way to spend the time on the plane.—That's true. I never go travelling _________ a book.A. withoutB. fromC. onD. about12.（中考•齐齐哈尔）My younger brother was born the night of June 21st. He is very cute.A. inB. onC. at13.（中考•随州）一Do you know the student David andJack?—Yeah. It's Jim.A. amongB. inC. betweenD. around14.（中考•河北）Just walk down this road and you'll see the museum your night.A. onB. inC. atD. by数词15.（中考•河南）people watched the rocket flying up into the sky.A. ThousandB. ThousandsC. Thousands of16.（中考•绥化）They plan to plant trees next year.A.three hundredB.three hundredsC.three hundreds of17.（中考•鄂州）一How old is your son?—________ . We had a special party for his _______ birthday yesterday.A. Nine；nineB. Ninth；nineC. Nine；the ninthD. Nine；ninth18.（中考•龙东）of the students in our class going to the summer camp inBeijing next week.A.Two fifths; areB.Second fifths; areC.Two fifths; is形容词和副词19.（中考•河北）Eating dumplings at the Spring Festival is in China.A. patientB. luckyC. possibleD. traditional20.（中考•河北）Mr Liu is a really nice person — the person I know.A. nicerB. nicestC. happierD. happiest21.（中考•鄂州）一I'll be away for a long time.—Don't worry. She can look after your pet ________ .A.careful enoughB.enough carefulC.carefully enoughD.enough carefully22.（中考•齐齐哈尔）Our country is getting. We are proud of it.A.more and more strongB.strong and strongC.stronger and stronger第二部分动词分类1.（中考•苏州）一Sorry, I've forgotten your name. Can you me?—I'm Daniel.A. remind C. respectB. receive D. remember2.（中考•天津）一The cheese doesn't _____ ___ good. Why don't we go to buy some fresh cheese?— Sounds great!A. seeB. findC. soundD. taste3.（中考•孝感）For our safety, we must ___ the traffic rules on the way to school.A. followB. changeC. makeD. break4.（中考•乐山）Murray plans to study art in the U. K. His friends will him off at theairport next week.A. takeB. seeC. leave5.（中考•河南）一I don't care what people think.— Well, you ________ . You're not alone in the world.A. canB. mayC. shouldD. will6.（中考•宜宾）Two months a long time. We can visit our grandparents during thevacation.A. amB. isC. are动词短语7.（中考•兰州）How noisy it is! Could you please the CD player a little?A. turn offB. turn downC. turn onD. turn up8.（中考•孝感改编）一What's the meaning of “The Belt and Road” ?—Let me ________ t he words in the new dictionary.A. look atB. look forC. look afterD. look up9.（中考・合月巴）Our geography teacher told us to more information about our city and shareit next week.A. find outB. keep awayC. turn offD. use up10.（中考・河北）Grandfather lives with us. We all him.A. look atB. look forC. look afterD. look like11.（中考・福建）一Don't the waste paper. We can collect and recycle it.—You're right. Everyone should be a greener person.A. blow awayB. put awayC. throw away12.（中考・黄石）My parents to see In theNameof People《人民的名义》）last weekend.A. picked upB. stayed upC. set upD. took up句子的时态13.（中考•武汉改编）I football quite well, but I haven't had time to play since the newyear.A. will playB. have playedC. had playedD. play14.（中考・河南）—Paul, I'm busy cooking. Can you give a hand?—Just a minute. I ________ my e mail.A. am checkingB. will checkC. have checkedD. was checking15.（中考•宜宾）I don't know when he back. Please tell me when he back.A. comes；comesB. comes；will comeC. will come；comes16.（中考•沈阳）Look on the bright side oflife, and imagine that you a happy andsuccessful future.A. hadB. will haveC. haveD. have had17.（中考・北京）Mymother__ some washing when the telephone rang.A. doesB. didC. is doingD. was doing18.（中考•孝感）The volunteers a lot of help to the old and the young since 2010.A. offeredB. have offeredC. are offeringD. will offer19.（中考•重庆B）Dave is a good boy and he always finishes his homework on time.A. doB. didC. doesD. doing句子的语态20.（中考•河北）Hangzhou ___ as the City of Silk. Tourists like shopping for silk there.A. knowsB. is knownC. was knownD. will be known21.（中考•临沂）They have collected more than 14, 000 books since the library lastmonth.A. builtB. was builtC. buildsD. is built22.（中考•龙东）The number of the old people is increasing in China. With the development of China,they _____________ better care of in the future.A. will takeB. are takenC. will be taken23.（中考•合肥）Mr Green to sing an English song at the party and he sang well.A. was invitedB. invitedC. is invited24.（中考•沈阳）-What tools to make paper cutting? —Scissors.A. are usedB. usedC. will useD. use25.（中考・河南改编）一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. were; asked非谓语动词26.（中考•河南改编）Whenever we kids come over, Auntie Susan just stands there and watches ussure we don't break anything.A. makeB. madeC. to makeD. makes27.（中考•白银）Boys and girls,learning and have fun!A. keepB. to keepC. keepingD. kept28.（中考•南充）一Mario, your mobile phone is ringing.—Wait a minute. It's dangerous for us ________ it while crossing the street.A. answeringB. to answerC. answerD. answered29.（中考•孝感）To keep children away from danger, we warn parents children at homealone.A. leaveB. to leaveC. not leaveD. not to leave30.（中考•齐齐哈尔）一It takes me half an hour playing the piano. How about you?—I usually spend 20 minutes _________it.A.practicing; onB.to practice; inC.to practice; on31.（中考•邵阳）My little brother didn't go to bed until he finished his homework lastnight.A. doB. doingC. to do32.（中考•兰州）A nurse Carolyn will look after the baby when his motheraway.A. naming；is C. named；isB. naming；will be D. named；will be第三部分句子类型1.（中考•乐山）The bus is coming. Oh, my God! It's full. I'm afraid we can't it.A. get upB. get onC. get off2.（中考•北京）一did you stop playing?—Because I was tired.A. HowB. WhyC. WhenD. Where3.（中考•扬州）一I went from a school desk to a ship in my teens.—_______ days would you be at sea? Homesick?A. How longB. How manyC. How muchD. How soon4.（中考•昆明）一? —Twice a week.A.How old are youB.How far is it from your home to schoolC.How do you get to schoolD.How often do you exercise5.（中考•南京）一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. keeps6.（中考•盐城）fine weather it is! Let's go on a picnic!A. What aB. WhatC. HowD. How a7.（中考•扬州）一bad news! We didn't win the 15th Sudirman Cup.—It's a pity.A. WhatB. What aC. HowD. How a8.（中考•邵阳）great basketball player Yao Ming is! I like him very much.A. WhatB. HowC. What a9.（中考•随州）important it is for kids to imagine freely!A. WhatB. HowC. How anD. Whatan10.（中考•临沂）My arm is still painful,I'm going to see a doctor.A. soB. forC. butD. or11.（中考•武汉改编）一I don't like reading watching TV. What about you?—I don't like reading, ________ I like watching TV.A. and；orB. and；andC. or；andD. or；but12.（中考•呼和浩特）Lucy you can't go to the party. One of you has to stay athome to look after your grandma.A. Neither; norB. Either; orC. Not only; but alsoD. Both; and13.（中考•成都）乂@口丫people still try to climb Qomolangma every year it is verydangerous.A. whenB. ifC. though14.（中考•邵阳）一Li Ming, do you know?—Yes. He comes from Canada.A.where does our new English teacher come fromB.where our new English teacher comes fromC.where did our new English teacher come from15.（中考•重庆B）—I can't see on the blackboard. May I borrow your notebook?—Sure. Here you are.A.what our teacher wroteB.what did our teacher writeC.why our teacher wroteD.how did our teacher write答案第一部分名词：1. B 2. A 3. C 4. B 5. D 6. B代词：7. B 8. B 9. D 10. A介词：11. A 点评：由句意“阅读是一个在飞机上消磨时间的好方法。

人教版八年级英语下册期中限时专项训练单项选择题(含答案)

八年级英期中限时专项训练-单项选择题（限时30分钟，100分）1．— Why not go out for dinner? My treat this time.— ________. But I’ m busy preparing for an exam.A．Not at all B．In your dreams C．Sounds great D．There, there! It’ll be OK2．—The entrance exam (入学考试) is coming, I’m so nervous.—Helen, the more careful you are during the exam, ________ mistakes you’ll make. A．the more B．the fewer C．the fewest D．the less 3．—I’m angry because Jane brought my dictionary without asking me.—It’s not a big deal. You should talk to her ________ she can remember it.A．such that B．because C．in order to D．so that 4．—What do you do on weekends?—I ________ in the old people’s home. I help to do some cleaning.A．volunteer B．fix C．study D．build 5．—Where is Alex? I haven’t seen him for a few weeks.—I’m afraid he ________ Australia for his holiday. He ________ there twice before. A．has gone to; has been B．has been to; has been inC．has been in; has been D．has gone to; has been to6．________ she was only 24, Zhou Chengyu was one of the commanders (指挥官) of the Chang’e-5 lunar mission.A．Until B．If C．Although D．Since7．I ________ for a bus when it began to snow.A．waited B．was waiting C．am waiting8．We must keep ________ when listening to a report.A．in surprise B．in silence C．talking9．Please wait for me. You always can’t wait ________ a film.A．see B．seeing C．saw D．to see 10．He ________ quiet but now he is very outgoing.A．used to B．is used to C．is used for D．used to be 11．________ the driver, I was saved by doctors in time.A．Thanks for B．Thanks to C．As for D．Be thankful to 12．I joined the book club last month and I ________ five books already.A．read B．am reading C．will read D．have read 13．—What was the party like?—Wonderful! It has been years _________ I enjoyed myself so much.A．since B．after C．when D．until 14．Class 1, Grade 8 ________ that team and ________ the match last week.A．beat; win B．win; beat C．won; beat D．beat; won 15．—I am not feeling well. I ________ like this since last Friday.—You’d better go to see a doctor.A．was B．will be C．felt D．have been 16．—Would you mind me ________, Ron?—________. Do it as you like, please.A．play the piano; It’s OK B．playing the piano; Of course not C．playing the piano; Of course D．to play the piano; Never mind 17．Lily feels_________ because she lives alone here.A．alone B．lonely C．happy D．satisfied 18．—Where is Jim?—He ________ to Nanjing, he will come back next Monday.A．has been B．had been C．has gone D．had gone 19．Facial recognition(人脸识别)technology is widely used today. _______, the police use it to search for bad guys.A．For example B．As a resultC．As soon as D．At first20．It’s a bad habit of learning. _________, it is never too late for you to get out of it. A．So B．Anyway C．Finally D．Also21．Lily is proud of ________ when she won the first prize after hard work.A．she B．her C．herself D．hers 22．—According to a recent survey, many students have poor eyesight.—In my opinion, reading on mobile phones too often is the _______ of having poor eyesight. A．cost B．result C．cause D．importance 23．You should look around to relax your eyes ________ while reading.A．in time B．all the time C．from time to time D．on time 24．Don’t stand ________ the window. It’s too dangerous.A．against B．with C．along D．in25．We often volunteer several hours ________ up the sick children in the hospital on weekends.A．to cheer B．cheer C．cheering D．cheered 26．—Tony stood at the door and made a ________ that he was ready to leave.—Did you say goodbye to him?A．notice B．note C．message D．sign27．—If you always ________ yourself with others, you may have lots of stress.—I agree. We should believe in ourselves.A．consider B．create C．compare D．communicate 28．—What did the doctor say?—Well, he advised my father to ________ smoking.A．get up B．give up C．stay up D．set up 29．—Why don’t you talk to your parents?— ________.A．You are welcome B．It’s easyC．I don’t think so D．Good idea30．When the dancers stopped ________ to us, we couldn’t stop ________ excitedly. A．waving; shout B．to wave; shouting C．to wave; to shout D．to waving; to shouting31．Sandy is my best friend and I ________ trust her so I talk about almost everything with her.A．cheaply B．completely C．recently32．The government plans to ________ these old buildings in this area and built a new park around here.A．fall down B．take down C．turn down 33．—You’d better find some ideas for a short trip in a travel guide.— ________ .A．That’s a good idea B．I hope so C．I don’t feel like it D．You’re welcome 34．—How can schools help students realize their dreams?—By caring for the full __________ of their talents.A．development B．knowledge C．attention D．relation 35．—There is so much work to do today. I cannot finish it alone.—Don’t worry. I can __________ with a few things.A．find out B．turn out C．give out D．help out 36．—Can you finish it in an hour?—I’m not sure. This is my first time to do such a job ______.A．lonely B．alone C．independent D．personal 37．—Dad, can I watch TV now?—______. You have too much homework to do.A．Forget it B．Of course you can C．No, I can’t D．That’s all right 38．Old Henry always stays ________ at home, but he doesn’t feel ________. A．alone; alone B．alone; lonely C．lonely; lonely D．lonely; alone 39．The teacher speaks very loudly ________ all the students can hear her.A．so that B．in order to C．because D．because of 40．—If you always ________ yourself with others, you may have tons of pressure.—I agree. We should believe in ourselves.A．compare B．communicate C．consider D．create参考答案：1．C2．B3．D4．A5．A6．C7．B8．B9．D10．D11．B12．D13．A14．D15．D16．B17．B18．C19．A20．B21．C22．C23．C24．A25．A26．D27．C28．B29．D30．B 31．B 32．B 33．A 34．A 35．D 36．B 37．A 38．B 39．A 40．A。

湘少版五年级英语下专项训练一

五年级专项训练一一、找出每组中不同于其他三个单词的选项.( ) 1. A. use B. like C。

work D. comes( ) 2. A. cat B。

roof C。

dog D. panda( )3。

A. above B。

chimney C。

under D。

behind( ) 4. A. brush B. poor C。

happy D。

thin( ) 5. A。

shoes B。

sticks C. drawing D。

stones( )6。

A。

put B。

do C. sit D. sugar( )7。

A. naughty B。

spill C. good D。

noisy( )8. A。

waiting B. make C. go D。

take( )9。

A。

read B. bin C。

table D. seat( )10. A. I B。

you C. your D. we( )11. A. today B. why C。

what D。

where( )12。

A。

finish B。

was C. do D. go( )13. A. your B。

I C. they D. he( )14。

A. library B。

zoo C. home D。

happy( )15。

A。

felt B。

looked C. live D。

spent( )16。

A. Friday B. yesterday C. Sunday D. Monday( )17. A. ten B。

four C。

tenth D。

seven( )18。

A。

November B。

Sunday C。

December D. March( )19. A。

mother B。

sister C。

brother D. classmate( )20。

A. day B. first C。

year D。

month( )21。

A. him B. her C。

I D。

me( )22。

中考数学中档题突破专项训练一实际应用与方案设计

专项训练一实际应用与方案设计
类型一：分配类问题
1．(2022·郴州)为响应乡村振兴号召，在外地创业成功的大学毕业生小姣毅然返乡当起了新农人，创办了果蔬生态种植基地．最近，为给基地蔬菜施肥，她准备购买甲、乙两种有机肥．已知甲种有机肥每吨的价格比乙种有机肥每吨的价格多 100 元，购买 2 t 甲种有机肥和 1 t 乙种有机肥共需 பைடு நூலகம் 700 元． (1)甲、乙两种有机肥每吨各多少元？
2．(2022·抚顺)麦收时节，为确保小麦颗粒归仓，某农场安排 A，B 两种型号的收割机进行小麦收割作业．已知一台 A 型收割机比一台 B 型收割机平均每天多收割 2 公顷小麦，一台 A 型收割机收割 15 公顷小麦所用时间与一台 B 型收割机收割 9 公顷小麦所用时间相同． (1)一台 A 型收割机和一台 B 型收割机平均每天各收割小麦多少公顷？
种类真丝衬衣真丝围巾
进价(元/件) a
80
售价(元/件) 300 100
(1)求真丝衬衣的进价 a 的值；解：(1)根据表格数据可得 50a＋25×80＝15 000，解得 a＝260.
(2)若该电商计划购进真丝衬衣和真丝围巾两种商品共 300 件，据市场销售分析，真丝围巾进货件数不低于真丝衬衣件数的 2 倍．如何进货才能使本次销售获得的利润最大？最大利润是多少元？
(3)求线段 CD 的函数关系式．直接写出货车出发多长时间，与轿车相距
20 km. 设点 D 的横坐标为 x，则
80(x－1.5)＋100(x－1.5)＝144，
解得 x＝2.3，故点 D 的坐标为(2.3，144)，
设线段 CD 的函数关系式为 y＝kx＋b(k≠0)， 1.5k＋b＝0， k＝180，

直通中考专项训练语文限时精练答案光明版

直通中考专项训练语文限时精练答案光明版1、1小说通过故事情节来展示人物性格，表现中心思想。

故事情节一般分为开端、发展、高潮、结局。

[判断题] *对(正确答案)错2、“醴酪”的读音是“lǐluó”。

[判断题] *对错(正确答案)3、21．下列词语中加点字注音完全正确的一项是（）[单选题] *A．翘首（qiáo）颤抖（chàn）静谧（mì）深恶痛绝（wù）(正确答案)B．纤维（qiān）畸形（jī）蛮横（héng）顿开茅塞（sè）C．莅临（lì）脸颊（xiá）粗糙（zào）至死不懈（xiè）D．摄取（niè）炫耀（xuàn）应和（hè）不省人事（shěng）4、国粹（cuì）冷炙（zhì）包庇（bì）玄虚（xuán）此组词语中加着重号的字的注音全都正确。

[判断题] *对(正确答案)错5、1称对方的父亲可用“家父”。

[判断题] *对错(正确答案)6、1《我的空中楼阁》是一篇托物言志、寄情于景的散文，作者是台湾作家李乐薇。

[判断题] *对错(正确答案)7、1在接待和答询的时候要注意倾听，了解对方的意图，要抓住关键，恰当回答。

[判断题] *对错(正确答案)8、1豪放派和婉约派是宋代词坛上的两大流派。

豪放派代表词人有李清照、柳永等，婉约派的代表词人有苏轼、辛弃疾等。

[判断题] *对(正确答案)错9、18. 下列句子没有语病的一项是（）[单选题] *A．许多劳动者用汗水彰显着精彩的奋斗故事，以担当书写了平凡岗位上的劳动画面。

B．袁隆平成功研究出杂交水稻，为我国农业发展和世界粮食供给作出杰出贡献。

(正确答案) C．山东临沂的发展变化，是沂蒙精神薪火相传的最好见证，也是老区群众艰苦创业。

D．北斗三号全球卫星导航系统正式开通，全球已有多达120余个国家成功使用北斗系统。

高考英语阅读理解专项限时训练1

高考英语阅读理解专项限时训练1第一节阅读下列短文，从每题所给的4个选项 (A、B、C和D) 中，选出最佳选项。

AOff-Peak fares are cheaper tickets for traveling on trains that are less busy, offering good value for money. The tickets may require you to travel at specific times of day, days of the week or on a specific route. Where there is more than one Off-Peak fare for a journey, the cheaper fare is called Super Off-Peak.You can buy Off-Peak tickets any time before you travel, either online or at a local station. The travel restrictions for your Off-Peak ticket will depend on the journey you are making. The tickets must be used on the date shown on the ticket. For Off-Peak return tickets, related journeys must be made on the date shown on your ticket as well.Children aged live lo fifteen get a 50% discount for all Off-Peak fares. Up to 2 children under 5 years can travel free with each fare paying adult. Railcard holders get 1/3 off all Standard Class Off Peak fares. Senior, and disabled Railcard holders also get 1/3 off all First Class Off Peak fares. Please note that minimum fares and time restrictions may apply to tickets bought with a Railcard.If you plan on a train trip with friends or your family, you may get group travel discounts. Three or four can travel for the price of just two adults—leaving everyone more money to spend on the day out! If you are traveling in a group of ten or more at Off-Peak times, you may be able to obtain a further discount through the train company you are traveling with. Contact the train company directly and be aware that you may need to book tickets in advance.For more information, please visit www. .1. An Off-Peak ticket differs from other tickets in .A. its good value for moneyB. its convenienceC. the specific trainsD. travel schedules2. Apart from the Off-Peak fares, you may also save money by .A. becoming a VIPB. traveling at rush timeC. buying tickets onlineD. getting group travel discounts3. What type of writing is this text?A. An announcement.B. A ticket booking guide.C. A business report.D. A travel review.BTipping isn’t a big part of British culture, unlike in North America, where waiters and waitresses are paid below minimum wage, Tips are usually appreciated, but offering a tip of some1services can cause confusion.In casual restaurants, where you pay for your order at a counter but food is brought to your table, tipping is uncommon. You are welcome to leave a pound or two if you wish. In restaurants where you place your order with a waiter or a waitress and receive your food and bill at your table, it’s customary to tip around 10 percent. In some restaurants, a service charge may be added 1o the bill automatically, typically 10 or 12.5 percent. In this case, you don’t need to add a further tip. When you pay by credit card, the machine may ask if you want to add a tip. Check your bill to see if a service charge has already been added before paying—if so you don’t need to add a tip on the machine. You can request the service charge be removed from your bill if you are unhappy with the service. In some cases a restaurant may print “service not included” on the bill or menu. This is a request for a tip. You’re not forced to offer anything, but 10 percent would be normal in this situation. Tipping in cafes and fast food restaurant is not expected.If you use a taxi, round the fare up to the nearest pound shown on the meter. On a journey from or to the airport in a booked minicab you might wish to tip 2 or 3 pounds if the driver helps with your bags.Be sure to check a country’s tipping culture before you start your trip. For more information, visit TripAdvisor com.4. According to the text, in British culture.A. it is necessary to tip if you are served in cafesB. it is confusing to tip if you receive your bill at your tableC. it is customary to tip if “service not included” is printed on the billD. it is compulsory to tip even if the service is unsatisfying in some restaurants5. When you pay by credit card, .A. the service charge can be added on the machineB. the service charge must have been included in the bill automatically.C. the service charge can’t be refusedD. the service charge needn’t be checked before you pay6. If the British taxi meter shows 58.4 pounds, you are expected to pay .A. 58.4 poundsB. 59 poundsC. 61poundsD. 64 pounds7. What is the best title for the text?A. Introduction of TripAdvisor. comB. Occasions for TippingC. Advice on Tipping in RestaurantsD. British Ways to TippingCOur perception of how food tastes is influenced by cultery like knives, forks, and spoons, research suggests.“Size, weight, shape and color all have an effect on flavor,” says a University of Oxford team. Cheese tastes saltier when eaten from a knife rather than a fork; while white spoons make yoghurt2taste better, experiments show.The study in the journal Flavour suggests the brain makes judgments on food even before it goes in the mouth.More than 100 students took part in three experiments looking at the influence of weight, color and shape of cutlery on taste. The researchers found that when the weight of the cutlery is consistent with expectations, this had an influence on how the food tastes. For example, food tasted sweeter on the small spoons than are traditionally used to serve desserts.Color contrast was also an important factor—white yoghurt eaten from a white spoon was rated sweeter that white yoghurt tasted on a black spoon. Similarly, when testers were offered cheese on a knife, spoon, fork or toothpick, they found that the cheese on a knife tasted saltiest.“How we experience food is a multisensory experience involving taste, feel of the food in our mouths, pleasant smells, and he feasting of our eyes,” said Pro. Charles Spence and Dr. Vanessa Harrar. “Even before we put food into our mouths, our brains have made a judgment about it, which affects our overall experience.”Past research has shown that china can change our perception of food and drink. For example, people generally eat less when food is served on smaller plates. “The new research into how the brain influences food perception could help dieters or improve gastronomic(美食的)experiences at restaurants,” said Pro. Spence. He told BBC News: “There’s a lot more to food than what’s on the plate. Many things we thought didn’t matter do. We’re going to see a lot more of neuroscience(神经科学)design around mealtimes.”8. According to the text, we know that the cheese used in the experiment is .A. SaltyB. sourC. sweetD. bitter9. What do we know about the weight of the cutlery in paragraph 3?A. It is important for people.B. People usually don’t care about it.C. It affects how the food tastes.D. It is always different from people’s expectation.10. What does the underlined word “multisensory” in Paragraph 5 probably mean?A. Coming from the senses.B. Involving many different senses.C. Able to feel or perceive.D. Easily affected by other feelings.11. What can we learn from the last paragraph?A. Research on cutlery is of great importance.B. Research into food will be continued in the future.C. Research on the effect of nerves and taste of food will be done.D. Research into plates and food will be carried out in the near future.DA “memory pill” that could aid exam revision and help to prevent people forgetting important3anniversaries may soon be available over the counter.The medicine has been designed originally to help treat Alzheimer’s disease, a disease marked by progressive loss of mental capacity resulting from weakening of the brain cells, but could be adapted and licensed for sale in a weaker form within the next few years.One brand of memory-enhancing (增强记忆的) pill is being developed by the multinational company AstraZeneca together with Targacept, an American company, while Epix Pharmaceuticals, also from the US, is developing another.Both have “Cognitive-enhancing (提高认知的) effects which are aimed at treating patients with age-related memory loss.Steven Ferris, a neurologist and former committee member of the Food and Drug Administration in the US, has predicted that a milder version will be available for healthy consumers as a lifestyle pill available over the counter.Dr. Ferris said: “My view is that one could gain approval, provided you showed the drugs to be effective and safe. It could be a huge market.”There is evidence that mind-improving drugs are already being taken in Britain by healthy users.Provigil, which was used to treat narcolepsy, is being taken by some students to help them stay awake. while Adderall XR and Ritalin, treatments for attention deficit disorder(注意力缺乏症), are being used to help promote concentration.A spokesman of Adderall XR said: “We get a lot of calls from college campuses asking about it. “There are risks though. It can raise blood pressure, people shouldn’t do it.”The Department of Health said it was not illegal to buy the medicines over the Internet, but it was not recommended.Barbara Sahakian, professor of clinical neuropsychology at Cambridge, said: “It’s hard to quantify the scale of the phenomenon but it’s definitely catching on. ’“The reality is that we are not always at our best. After being up at night looking after the kids or travelling. Many people would love to have something to refresh them. It’s not prohibited to drink Red Bull. The principle with cognition enhancers is not so different. ”12. The “memory pill”, as is mentioned in the first paragraph, is not sold over the counter now mainly because .A. it is not safe enoughB. it is not efficient enoughC. it has not yet been mass-producedD. it has not yet been tested on humans13. Epix Phamaceuticals is developing a memory-enhancing pill for .A. adolescentsB. middle-aged people4C. senior citizensD. pupils and students14. What do we learn about the manufactures of Adderall XR?A. They were proud that their drug was popular with college students.B. They developed a milder version of the drug for healthy people.C. They suggested that college students should not use the drug.D. They produced the drug for helping promote concentration.15. According to Barbara Sahakian, Red BullA. is not as effective as it is in reality.B. is able to restore people’s energy.C. involves as much risk as cognition enhancers.D. has the same effect as cognition enhancers.第二节根据短文内容, 从短文后的选项中选出能填入空白处的最佳选项, 选项中有两项为多余选项。