题海网，海量题库；找题库、找试卷、找答案就上题海网。

襄阳古城县一位25岁农民自建“屋顶发电站”，太阳晒一晒就能发电．这组光伏发电设备白天每小时可发电5度，则该设备白天的电功率是________kW．他家里的“电热驱蚊器”是利用电流的________效应工作的．

 

在△ABC中，∠C=45°，O是△ABC的外心，若=m+n(m，n∈R)，则m+n的取值范围为　    　．

3．把下列句子组成语意连贯的语段，排序最恰当的一项是

①过度强调“客观性”必然导致对技巧的过度崇拜

②卢伯克的小说理论就存在把“技巧”进行分离化、外在化研究的问题

③也就是说，很容易使人对技巧产生错觉，把它当作一种高于人的主体性的力量

④而追求与人物和读者的整个精神世界密切相关的伦理效果，则是他选择和使用技巧所追求的包含着更大“益处”的目的

⑤卢伯克没有意识到，隐含在技巧背后的，首先是一个伦理性的问题：美学意义上的“真实性”和“鲜明性”效果，只是小说家运用技巧追求的部分效果和“益处”

⑥或者把它当作外在于作者和人物的对象来看待

A．①③⑥②⑤④        B．①②⑤③④⑥

C．②①③⑤④⑥        D．②①③⑤⑥④

Beijing has started a battle to get rid of “Chinglish” (Chinese English). The “Language mandarins” of Beijing have decided that Chinglish is a disease for China’s modernizing claim and must be obliterated before the city hosts the Winter Olympic Games in 2022.

A road sign on the Avenue of Eternal Peace （Chang’an Street）, for example, advised: “To Take Notice of Safe; The Slippery are Very Crafty,” a warning that the sidewalk was slippery. Another sign in a Beijing park reads: “Little grass is smiling slightly, please walk on sidewalk “.

Li Honghai, the city official in charge of the battle, said, “Linguistic perfection (语言美) is becoming increasingly important with the rise in the number  of  the foreigners  flowing into the city .”

However, not everyone shares the disdain （蔑视）of the Beijing government for the mixed language. “The choice of words is pretty much. One can either choose the verbs, adverbs, nouns or whatever one likes,” explained one Hong Kong linguist on an Internet website.

So many examples exist that several Internet sites have been set up to collect Chinglish phrases. Many come from English instructions on packages such as a candle marked with “Keep this candle out of children” and a model boat -- curiously named Posh Sailboat -- which means “Please don’t place it in dusty play.”

If the battle against Chinglish is successful, Chinese will also turn their attention to the English-language versions of newspapers, which play an even more important role in teaching right English.

12. The underlined word “obliterated” refers to        .

      A. beautified              B. exploited              C. translated             D. removed

13. From the passage, we know that        .

A. Chinglish usually communicates in many cases                      

B. everyone shares the disdain for the mixed language

C. all the people don’t share the disdain for the mixed language

D. several Internet sites have been set up to clear the Chinglish phrases

14. We can infer that the English-language versions of newspapers        .

A.should collect more Chinglish phrases      B. should report the battle above

C. should be paid more attention to             D.should be in duty to teach normal English 

15. Which of the following signs is Chinglish?

	Watch your step. Slippery sidewalk.		Keep off the grass, please.

 

A                                  B

No smoking, please.

Tourists do not enter.

 

       C                                  D

阅读下面这首宋词，完成下面小题。

临江仙送钱穆父[注]

苏轼

一别都门三改火，天涯踏尽红尘。依然一笑作春温。无波真古井，有节是秋筠。

惆怅孤帆连夜发，送行淡月微云。尊前不用翠眉颦。人生如逆旅，我亦是行人

[注]元佑三年，钱穆父获罪出知越州，元佑五年徒知灜州，于次年春启行，途经杭州，苏轼以此词赠行。

1. 下列对这首词的赏析，不正确的一项是(   )

A. 作者与钱穆父京城一別后，时隔三年再次重逢，今又将分别，令人慨叹。

B. 钱穆父如春风般温暖的笑容，与他辗转天涯、踏尽红尘的辛劳形成对比。

C. 作者以古井水、秋竹作比，表达了对友人品性的赞美和对其遭遇的同情。

D. “淡月微云”营造出凄清的氛围，情景交融，烘托作者惆怅、感伤的心情。

2.“人生如逆旅，我亦是行人”体现了作者怎样的人生态度?请简要分析。

（8分）传统的打气筒的示意图如下图中的左图所示，圆柱形打气筒A高H，内部横截面积为S，底部有一单向阀门K，厚度不计的活塞上提时外界大气可从活塞四周进入，活塞下压时可将打气筒内气体推入容器B中。用传统的打气筒给自行车打气时，不好判断是否已经打足了气，为了解决这一问题，某研究性学习小组的同学们经过思考之后，他们在传统打气筒基础上进行了如下的改装（图中的右图所示）：该组同学设想在打气筒内壁焊接一卡环C（体积不计），调节C距气筒顶部的高度就可以控制容器B中的最终压强。已知B的容积VB=3HS，向B中打气前A、B中气体初始压强均为P0= 1.0×l05 Pa，设气体温度不变。

①若C距气筒顶部的高度为h=，则第一次将活塞从打气筒口压到C处时，容器B中的压强是多少？
②要使容器B中的最终压强为3P0，则h与H之比应为多少？

2021 年 3 月 2 日起，北京市人力资源社会保障局更新改版劳动保障维权二维码，并优化了相关功能，精简了不必要的输入项，优化字体显示，举报投诉事项内容增加描述文字模板，短信回复内容更加便民，劳动者可以登录北京市人力资源社会保障局官方网站，扫描识别首页右侧导航栏中劳动保障维权二维码，或者微信关注 “ 北京人社 ” 公众号，点击 “ 微服务 - 办理服务 - 劳动保障举报投诉 ” 进行维权。从劳动者角度看，更新改版劳动保障维权二维码可以（    ）

① 更加畅通劳动者维权通道，为维护劳动者权益提供更好的服务

② 规范劳动用工行为，提高用工单位维护劳动者权益的自觉性

③ 节约劳动者时间和精力，使维权更方便快捷

④ 增强劳动者法律维权意识，消除不理性维权现象

A ． ①② B ． ①③ C ． ②④ D ． ③④

在数轴上作出的点.   （用尺规作图法，保留作图痕迹，不要求写画法）；

When I was 13, my only purpose was to become the star on our football team. That meant  36 Miller King, who was the best player at our school.

Football season started in September and all summer long I worked out. I carried my football everywhere for　37　.

Just before September, Miller was struck by a car and lost his right arm. I went to see him after he came back from hospital. He looked very　38　, but he didn’t cry.

That season, I broke all of Miller’s records while he　39　the home games from the bench. We went 10-1 and I was named most valuable player, 　40　I often had crazy dreams in which I was to blame for Miller’s　41　.

One afternoon, I was crossing the field to go home and saw Miller stuck(卡住) going over a fence—which wasn’t　42　to climb if you had both arms. I’m sure I was the last person in the world he wanted to accept　43　from. But even that challenge he accepted. I　44　him move slowly over the fence. When we were finally　45　on the other side, he said to me, “You know, I didn’t tell you this during the season, but you did　46　. Thank you for filling in for　47　.”

His words freed me from my bad　48　. I thought to myself, how even without an arm he was more of a leader. Damaged but not defeated, he was　49　ahead of me. I was right to have admire him. From that day on, I grew　50　and a little more real.

36. A. beating out       B. cheering for　　　 C. relying on             D. staying with

37. A. practice                     B. show                   C. comfort                   D. pleasure

38. A. pale                    B. calm                    C. relaxed                     D. ashamed

39. A. reported             B. judged                    C. organized                 D. watched

40. A. and                     B. then                    C. but                       D. thus

41. A. decision              B. accident          C. mistake                 D. sacrifice

42. A. steady                 B. hard                    C. fun                       D. fit

43. A. assistance         B. advice            C. praise                   D. apology

44. A. let                    B. helped                    C. had                       D. noticed

45. A. dropped                     B. ready            C. trapped               D. safe

46. A. fine                    B. wrong                    C. quickly                     D. normally

47. A. us                    B. yourself                  C. them              D. me

48. A. memories            B. ideas             C. attitudes                   D. dreams

49. A. still　　　       B. also　　　       C. yet　　　         D. just

50. A. bigger            B. healthier            C. cleverer                    D. cooler

他既是新文化运动中的‘主将’，又是中国初期的中央局书记。”此人是

    A．鲁迅              B．李大钊           C．胡适          D．陈独秀

.格列佛乘坐的“冒险号”船经过_______国家遭遇了海上季风风暴。

成语是我国语言文化的精华，很多成语都与历史典故相关。

成语搭配：将与成语相对应的选项的字母编号填写在括号内（0．5×10=5分）

①退避三舍 （      ）              A． 远古人类进行农业生产的情况

②纸上谈兵 （      ）              B． 牧野之战

③阵前倒戈 （      ）              C． 指挥长平之战的赵括

④刀耕火种 （      ）              D． 越王勾践磨砺自己的方法

⑤卧薪尝胆 （      ）              E． 晋楚争霸时候城濮之战所用到的策略

⑥三顾茅庐  （      ）             F． 淝水之战

⑦霸王别姬  （      ）             G． 刘备请诸葛亮

⑧乐不思蜀  （      ）             H． 班超出使西域

⑨不入虎穴，焉得虎子 （      ）    I． 刘禅安于逸乐,不思亡国

⑩草木皆兵 （      ）              J． 楚汉战争

商店老板给你冰淇淋，应说：( )
A. Here are you.
B. Here you are.

 “1936年12月12日，《西北文化日报》报道西安事变的消息。请回答 

⑴ 发动西安事变的二位爱国将领分别是谁？

⑵ 和平解决西安事变有何重大历史意义？

 科研人员以抗四环素基因为标记基因，通过基因工程的方法让大肠杆菌生产鼠的β-珠蛋白，治疗鼠的镰刀型细胞

贫血症。下列相关实验设计中，不合理的是（    ）

A.用编码序列加启动子、抗四环素基因等元件来构建表达载体
B.利用小鼠DNA分子通过PCR克隆出β-珠蛋白基因的编码序列
C.用含有四环素的培养基筛选出已经导入β-珠蛋白编码序列的大肠杆菌
D.用Ca^2＋处理大肠杆菌后，将表达载体导入具有四环素抗性的大肠杆菌中

紫色洋葱外表皮细胞的色素存在于细胞的（）

      A．细胞膜            B． 细胞质基质           C．   液泡       D． 细胞核

若关于x的一元二次方程（m+3）x²+5x+m²+2m-3=0有一个根为0，则m=______，另一根为________．