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如图,DE⊥AB于E,DF⊥AC于F,若BD=CD,BE=CF.

  1. (1) 求证:AD平分∠BAC;
  2. (2) 直接写出AB+AC与AE之间的等量关系.
公元前4000年代末,苏美尔人创造了,属于最早的文字,稍晚一点的埃及人发明的,有一定的读音,属于真正的文字。


被称为“第七类营养素”的是(  )

A . 淀粉 B . 动物蛋白 C . 核酸 D . 膳食纤维
如图所示,入射光线从玻璃射向空气,在玻璃和空气的分界面处同时发生了反射和折射。请在图中分别画出光线经过 O点后的反射光线和折射光线(大概位置)。

2016年10月24日至27日,中国第十八届中央委员会第六次全体会议在北京举行。这次全会研究部署的一个重大议题是(  )

A . 全面推进依法治国 B . 全面深化改革 C . 全面建成小康社会 D . 全面从严治党
已知函数
  1. (1) 求不等式的解集M;
  2. (2) 记的最小值为m,正实数a,b满足: , 求证:
"At three or four in the morning and I surf the net."
"I often check my e-mail forty times a day."
"I often spend more than three hours during one time on the net."
"I spend more time in chat rooms than with my 'real-1ife' friends."
Do you know any people like these? They are part of a new addiction(瘾)called Internet addiction. Internet addicts spend at least thirty to forty hours online every week. The use of the Internet can be an addiction like drug(毒品) use. People lose control of the time they spend on the Internet. For example, one college student was missing for several days. His friends were worried, and they called the police. The police found the student in the computer lab: he was surfing the net for several days straight.
Studies show that about 6 to 10% of Internet users become addicted. And people worry about the teens because the Internet is changing the playing field for some of them. They spend more time in cyberspace than in the real world of friends and family.
Is "surfing the net"a hobby or an addiction for you? You may have a problem if you have these symptoms(症状):
●You do not go to important family activities or you do not do school work because you like to spend hours on the Internet.
●You can't wait for your next online time.
●You plan to spend a short time online, but then you spend several hours.
●You go out with your friends less and less.

  1. (1) What does the beginning of the passage tell us?

    A . How to become an Internet addict. B . What an Internet addict usually does. C . Where to find an Internet addict. D . Why to write this passage.
  2. (2) How does the writer describe the addicts "use of Internet"?

    A . It is something like keeping drugs. B . It is a way of producing drugs. C . It is like taking drugs. D . It is terrible to imagine.
  3. (3) Why do people worry about the teens?

    A . The teens are wasting too much money. B . They used to work on the Internet. C . The playing field of the teens will disappear. D . More and more of the teens will become addicted to the Internet.
  4. (4) The example of one college student in the passage shows that _______

    A . Internet problems are more serious among college students B . Internet addicts usually stay in the computer lab without sleep C . Some of the Internet users have already been seriously addicted D . The police often help to find those Internet addicts.
  5. (5) What is the writer trying to tell us at the end of the passage?

    A . Don't be addicted to the Internet. B . Go to family activities more often. C . Do things as you have planned. D . Stay with your parents as often as possible.
阅读下面材料,按要求答题。

横平竖直的方块字,是中华民族的独有创造和文化遗产。汉字,不是几千年历史传承的记录工具,而是多彩的中华文化的载体。有了汉字,才有了唐诗的激情洋溢,

   △    , 元曲的灵动俏丽;有了汉字,才有了张旭、王羲之等人洒脱俊逸字体的千古流传。随着电子信息时代的到来,人们似乎更愿意借助键盘和鼠标来沟通和完成工作,②   △    。因而越来越多的人书写潦草、没有章法,横平竖直都难以做到,更别提展现汉字固有的神采、韵味了。

  1. (1) 材料中画线句有语病,请写出修改意见。
  2. (2) 在上面文字的横线处补写恰当的语句,使整段文字语意完整、连贯。
看谁算得又对又快.

7-3=

2+4=

3+4=

6+0=

1+6=

4+3=

7-4=

7-0=

6-5=

5-2=

4+4=

8-8=

英国2020年1月31日正式退出欧盟,英欧进入过渡期的协议谈判阶段。未来,欧盟的经济总量和市场规模将缩小,话语权将有所削弱。同时,“脱欧”导致英国民意撕裂。支持“留欧”的苏格兰发起了第二次公投寻求独立,但该公投已被英国首相鲍里斯·约翰逊拒绝。由此可见(   )

①英国是地方分权型单一制国家

②英国首相行使最高行政权力

③欧盟在国际事务中的作用将受到影响

④英国“脱欧”会导致欧盟走向分崩离析

A . ①② B . ①③ C . ②③ D . ③④
阅读下文,完成各题。

铁凝印象

汪曾祺

    ①四次作代会期间,有一位较铁凝年长的作家问铁凝:“铁凝,你是姓铁吗?”她正儿八经地回答:“是呀。”这是一点小狡狯。她不姓铁,姓屈,屈原的屈。我不知道她为什不告诉那年纪稍长的作家实话。姓屈,很好嘛!  她父亲作画署名“铁扬”,她们姐妹就跟着一起姓起铁来。铁凝有一个值得叫人羡慕的家庭,一个艺术的家庭。铁凝在一个艺术的环境长大的。铁扬是个“不凡”的画家——铁凝拿了我在石家庄写的大字对联给铁扬看,铁扬说了两个字:“不凡”。我很喜欢这个高度概括,无可再简的评语,这两个字我可以回赠铁扬,也同样可以回赠他的女儿。铁凝的母亲是教音乐的。铁扬夫妇是更叫人羡慕的,因他们生了铁凝这样的女儿。“生子当如孙仲谋”,生女当如屈铁凝。上帝对铁扬一家好像特别钟爱。且不说别的,铁凝每天要供应父亲一瓶啤酒。一瓶啤酒,能值几何?  但是倒在啤酒杯里的是女儿的爱! 

    ②上帝在人的样本里挑了一个最好的,造成了铁凝。又聪明,又好看。四次作代会之后,作协组织了一场晚会,让有模有样的作家登台亮相。策划这场晚会的是疯疯癫癫的张辛欣和《人民文学》的一个胖胖乎乎的女编辑,-----对不起,我忘了她叫什么。二位一致认为,一定得让铁凝出台。那位小胖子也是小疯子的编辑说:“女作家里,我认为最漂亮的是铁凝!”我准备投她一票,但我没有表态,因为女作家选美,不干我这大老头什么事。

    ③铁凝长得不高不矮,不胖不瘦,两腿修长,双足秀美,行步动作都很矫健轻快。假如要用最简练的语言形容铁凝的体态,只有两个最普通的字:挺拔。她面部线条清楚,不是圆乎乎地像一颗大香白杏儿。眉浓而稍直,眼亮而略狭长。不论什么时候都是精精神神,清清爽爽的,好像是刚刚洗了一个澡。我见过铁凝的一些照片。她的照片大致可分为两类。一类是露齿而笑的。不是“巧笑倩兮”那样自我欣赏也叫人欣赏的“巧笑”,而是坦率真诚,胸无渣滓的开怀一笑。一类是略带忧郁地沉思。大概这是同时写在她的眉宇间的性格的两个方面。她有时表现出有点像英格丽·褒曼的气质,天生的纯净和高雅。有一张放大的照片,梳着篷松的鬈发(铁凝很少梳这样的发型),很像费雯丽。我当面告诉铁凝,铁凝笑了,说:“又说我像费雯丽,你把我越说越美了。”她没有表示反对。但是铁凝不是英格丽·褒曼,也不是费雯丽,铁凝就是铁凝,世间只有一个铁凝。

    ④铁凝胆子很大。我没想到她爱玩枪,而且枪打得不错。她大概也敢骑马!她还会开汽车。在她挂职到涞水期间,有一次乘车回涞水,从驾驶员手里接过方向盘,呼呼就开起来。后排坐着两个干部,一个歪着脑袋睡着了,另一个推醒了他,说:“快醒醒!你知道谁在开车吗?——铁凝!”睡着了的干部两眼一睁,睡意全消。把性命交给这么个姑奶奶手上,那可太玄乎了!她什么都敢干。她写东西也是这样:什么都敢写。

    ⑤铁凝爱说爱笑。她不是腼腆的,不是矜持渊默的,但也不是家雀一样叽叽喳喳,哨起来没个完。有一次我说了一个嘲笑河北人的有点粗俗的笑话:一个保定老乡到北京,坐电车,车门关得急,把他夹住了。老乡大叫:“夹住俺腚了!  夹住俺腚了!”售票员问:“怎么啦!”——“夹住俺腚了!”售票员明白了,说:“北京这不叫腚。”——“叫什么?”——“叫屁股。”——“哦!”——“老大爷你买票吧。您到哪儿呀。”——“安屁股门!”铁凝大笑,她给续了一段:“车开了,车上人多,车门被挤开了,老乡被挤下去了,——‘哦,自动的!’”铁凝很有幽默感。这在女作家里是比较少见的。

    ⑥关于铁凝的作品,我不想多谈,因为我只看过一部分,没有时间通读一遍。就印象言,铁凝的小说也可以大致分为两类。一类《哦,香雪》一样清新秀润的。“清新”二字被人用滥了,其实这是很不容易做到的。河北省作家当得起清新二字的,我看只有两个人,一是孙犁,一是铁凝。这一类作品抒情性强,笔下含蓄。另一类,则是社会性较强的,笔下比较老辣。像《玫瑰门》里的若干章节,“生吃大黄猫”,下笔实可谓带着点残忍,惊心动魄。王蒙深为铁凝丢失了清新而惋惜,我见稍有不同。现实生活有时是梦,有时是严酷的、粗粝的。对粗粝的生活只能用粗粝的笔触写之。即便是女作家,也不能一辈子只是写“女郎诗"。我以为铁凝小说有时亦有男子气,这正是她在走向成熟的路上迈出的坚实的一步。

    ⑦我很希望能和铁凝相处一段时间,仔仔细细读一遍她的全部作品,好好地写一写她,但是恐怕没有这样的机遇。而且一个人感觉到有人对她跟踪观察,便会不自然起来。那么到哪儿算哪儿吧。

  1. (1) 给第①段中加点的字注音:狯:
  2. (2) 第③段作者认为铁凝像英格丽·褒曼(外国影星)、费雯丽,分析这样写的作用。
  3. (3) 第④段作者是如何描写铁凝的特点的,请加以分析说明。
  4. (4) 联系全文,作者从多方面展现了铁凝形象,请加以概括。
      Once there was a little girl who lived in a small, very simple, poor house on a hill. From there she could see across the valley to a wonderful house high on the hill on the other side. This house had golden windows, so golden and shining that the little girl would dream of how magic it would be to grow up and live in a house with golden windows instead of an ordinary house like hers. She wanted to live in such a golden house and dreamed all day about how wonderful and exciting it must feel to live there.
       When she got to an age and got enough skill and sensibility to go outside, she asked her mother if she could go for a ride outside the gate and down the lane. After pleading with her, her mother finally allowed her to go, insisting that she should keep close to the house and not wander too far. The day was beautiful and the little girl knew exactly where she was heading! Down the lane and across the valley, she got to the gate of the golden house across on the other hill.
       As she arrived, she focused on the path that led to the house and then on the house itself. She was so disappointed as she realized all the windows were ordinary and rather dirty, reflecting(反映出) nothing other than the sad neglect of the house that was derelict(废弃的).
So sad she didn't go any further and turned, and heart broken. As she glanced up she saw a sight to amaze her. There across the way on her side of the valley was a little house and its windows glistened golden as the sun shone on her little home.
      She realized that she had been living in her golden house and all the love and care she found there was what made her home the “golden house”. Everything she dreamed was right there in front of her nose! 

  1. (1) Which sentence is True according to the passage?

    A . The girl's mother finally allowed her to go to the golden house alone B . The golden house was on the hill where the girl lived. C . What disappointed the little girl was that the house was locked. D . Actually, the windows of the golden house were common and covered with dirt.
  2. (2) What can we infer from the passage ?

    A . The girl didn't love or care for her parents B . The girl had no idea where she was heading after leaving home C . The mother thought that she needn't keep an eye on her daughter D . The girl made up her mind to go to the golden house at the beginning
  3. (3) The passage is intended to tell us that_____.

    A . not all dreams will come true B . girls often have amazing imagination C . what we dream of may be just around us D . nothing is impossible to a willing heart
下列历史人物与相关故事对应错误的一项是(     )
A . 武松——景阳冈打虎 B . 贾宝玉——红楼春趣 C . 周瑜——桃园结义 D . 孙悟空——猴王出世
Here is a card for you.

父母亲应该阻止孩子玩暴力游戏。

Parents should  their children   violent computer games.

2019年5月15日,我国某高校结合自身特色在校园开展“置换青春”以物易物活动。此次活动以毕业季为契机,借助承载青春回忆的物品来换取自己所需的物品,在物的流转中分享美好青春。此次“置换青春”以物易物活动(    )

①是以物品为媒介的商品流通            ②可以使物品价值最大化

③需要以拥有物的所有权为前提条件      ④双方的交换总是等价的

A . ①③ B . ①④ C . ②③ D . ②④
阅读《荣誉的帽子》,完成问题。

荣誉的帽子

明飞龙

    ①读过一则这样的外国故事。

    ②在一次残疾人运动大会上,有三个特别的人来报名参加游泳比赛:一位失去了双腿,一位失去了双臂、一位双腿双臂都失去了。接待他们的工作人员小心翼翼地问他们怎样游泳,一位说用双手游泳,一位说用双腿游泳,当问到那既没有双臂又没有双腿的人时,他笑着回答:“我用耳朵游泳”。

    ③按照规定,他们分别进行了试泳,成绩都不错。特别是那位既没有双臂又没有双腿的选手,因为长时间的锻炼,他那两只耳朵像两片船桨,强健而灵活。因此他那失去四肢的躯体犹如一条破浪而行的鲨鱼 , 速度远远超过前两人。人们都私下里传说,一项伟大的纪录将会在他身上诞生。

    ④人们渴望的比赛终于到来了,整个运动场都挤满了人,因为人们都想目睹那位失去四肢的选手的风采。当失去四肢的那位选手出现的时候,整个会场一片山呼海啸。发令枪响后,运动员如一条条鱼钻入水中,向前推进。人们看到的只是浪花四射,谁先准后无法看清。结果出来了,失去双臂的人获得冠军.失去双腿的人获得亚军,但人们渴望的英雄——一失去四肢的人,却没有出现。

    ⑤后来,人们发现他已被淹死在游泳池里,头上戴着一顶漂亮的游泳帽,遮住了他那神奇的耳朵。原来,按照游泳场的规定,比赛前,在参赛的选手中有一人能戴上一顶象征着荣誉的游泳帽,他就是根据观众的意向选出来的人们公认的最有可能成为英雄的人。

    ⑥然而,英雄却被一顶象征荣誉的游泳帽杀死了。

    ⑦其实,很多时候,我们在身处困境时进行不折不挠的奋斗是比较容易的。没有脚的时候,我们可以用手去奋斗;没有手的时候,可以用腿去奋斗;没有手没有腿的时候,还可以咬紧牙关用耳朵去奋斗,或许也就能反败为胜。但我们历经坎坷,走出困境,踏上平坦大道时,却没有获得意料之中的成功,有时反而走向了失败和灭亡。“凶手”是谁?“凶手”就是头上戴着的帽子——那些海市蜃楼般的荣誉。因为这顶荣誉的帽子,我们就像那失去四肢的泳者被掩住了耳朵那样,失去了原有的清醒,忘掉了自己在困境中产生出来的本领。

  1. (1) 第②段写工作人员“小心翼翼”地问,“小心翼翼”体现了接待人员怎样的心理状态?
  2. (2) 第②段写失去四肢的泳者“笑着回答”,“笑”体现了泳者怎样的心理状态?
  3. (3) 第③段划线句子的作用是什么?你能换用一个比喻句吗?
  4. (4) 失去四肢的游泳者的死因是什么?你能在此基础上生发出本故事的寓意吗?
  5. (5) 试对本文的写法作点评论,自选一角度,说清楚即可。
  6. (6) 在生活中你是否也有过类似的情况:正是你自信的条件却导致了你的失败?请描述一下。
第二十四届世界哲学大会于2018年8月13日在中国北京召开,这是中国首次获得世界哲学大会的承办权。哲学具有无限关怀和终极追问的特点,总揽一切,综括一般,仰观宇宙之无穷,俯究万物之运动。这段话表明(    )

①哲学的研究对象即自然、社会和人类思维发展的最一般本质和规律

②哲学从一般规律中概括和总结出各种特殊规律

③哲学是一门包罗万象、囊括万物的综合性科学

④哲学把整个世界作为自己的研究对象

A . ①② B . ①④ C . ②③ D . ③④
I like spring best. _______ it's so pretty.               
A . Because B . But C . With
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