我国纵横交错的山脉和复杂多样的地形，为我们提供了丰富多彩的自然景观，又使祖国各地的生产活动和生活方式各有不同。读图回答下列问题。

（1）图中序号代表的山脉：①____________，②____________________。
（2）山脉③以东的土地利用类型主要是__________，以西的土地利用类型主要是____________。
（3）图中甲、乙、丙三大高原，地面崎岖不平，岩溶地形广布的是________，该区域易发生的山地灾害有__________、____________等。
（4）(双选)右图是我国东部某地等高线图。从因地制宜的角度考虑，下列对土地资源的开发利用合理的是 ( )
A．A地开垦耕地，发展种植业 B．B地种植花卉蔬菜，方便供应城区
C．C地围湖造田，扩大耕地面积 D．D地发展海水养殖

实施一对夫妇可以生育三个子女的政策，是我国积极应对人口老龄化问题的重大举措。某夫妇第一、二胎均为男孩，第三胎生女孩的概率是（　　）
A．12.5%
B．25%
C．50%
D．100%

Some Fun and Interesting Facts

◆ Do you think what color oranges are? The common answer to this question is “Orange”. However, the first oranges from Southeast Asia were actually green. Up to now, oranges in warmer areas like Vienam and Tailand still stay green when they are fully grown.

◆ There was a man named John Chapman who planted thousands of apple trees. But the apples on those trees were much more bitter(哭的) than the ones you’d find in the suppermarket today. John didn’t expect apples to be eaten whole, but rather made hard apple cider(苹果酒).

◆Like most four-legged animals, cats have five toes on the front paws, but their back paws only have four toes. Scientists think they four-toe back paws might help them run faster. Do you know any other fun fact about cats?

◆Walt Disney might have been the firs it gloves on his characters，as the star Mickey Mouse in 1929's The Opry House（《奥普里之屋》）.Besides being easier to interest, there's another reason why Disney did so:”We didn't want him to have mouse hands because he was supposed to be more human. "Disney once said.

41. What does the underlined word "they” refer to?

A. Warmer areas                               B. Oranges in warmer areas

C. The first oranges                          D. People from Vietnam and Thailand

42. John expected his apples to be

A. known by more people                       B. sold in the supermarket

C. eaten only by himself                      D. made into hard apple cider

43. How many toes does a normal cat have in total?

A. Fourteen                                   B. Sixteen

C. Eighteen.                                  D. Twenty

44. Disney put gloves on Mickey Mouse in order to ___________

A. make him look more human                   B. protect his hands

C. help him to run faster                     D. make him feel more comfortable

45. Which is NOT a fact according to the information above?

A. The first oranges weren’t orange.

B. John’s apples weren’t sweet enough.

C. Walt Disney put gloves on his characters to interest people.

D. Cats have fewer toes on their front paws than then ones on their back paws.

阅读材料，结合所学知识回答问题。

材料一

迈克尔 ·法拉第是英国物理学家、化学家，也是著名的自学成才的科学家。生于一个贫苦铁匠家庭，仅上过小学。1831年，他作出了关于电力场的关键性突破，永远改变了人类文明。他被称为“电学之父”。

——摘编自《科普中国网》

（ 1）材料一中的科学家“关于电力场的关键性突破”是指他作出的什么贡献？哪种机械进入生产领域之后，电力才开始作为动力带动机器？

材料二

爱迪生 8岁上学，但仅仅读了三个月的书，就被老师斥为“低能儿”而撵出校门。从此以后，他的母亲是他的“家庭教师”。爱迪生的文化程度极低，对人类的贡献却这么巨大，这里的“秘诀”是什么呢？他除了有一颗好奇的心，一种亲自试验的本能外，就是他具有超乎常人的艰苦工作的无穷精力和果敢精神。

——摘编自《爱迪生传》（2004年3月1日内蒙古科学技术出版社出版）

（ 2）材料二中的历史人物为人类的文明与进步作出了许多巨大贡献，请举出其中的一项。从材料一、二中，可以看出这两位历史人物有何突出的共同点？

（ 3）上述历史人物的贡献推动人类社会进入了什么时代？在该时代，国际秩序或世界格局发生了两次重大变化，其中第一次重大变化后建立的国际秩序的名称是什么？

“I have a letter for you,” my friend Kirsten told me on the phone. "I think it's from your mother. "I was 1 , since my mother had been dead for seven years.

A few weeks later Kirsten handed me the 2 dated Aug. 30, 2002. Around then I was preparing for my pilot course's final exam at the 3 school. The students finished the training on 4 days.

I was the first to 5 .  My mother's letter 6 after I left. Kirsten picked it up from my mail-box, to keep 7 she next saw me. 8 , a few days later, when it was her turn to leave, she 9 the letter among the piles of papers she 1 0 packed into boxes. It 1 1 there for a decade, during which my mother died. In 2013, when Kirsten 1 2 some dusty belongings from her flying school days, she 1 3 the letter.

It's been two years since Kirsten gave me the letter which I've 1 4 on my long flights. But I haven't 1 5 it yet. When I told some friends this, they 1 6 their heads. They said they wouldn't have been able to wait a second. Of course, I 1 7 how could I not? -about her 1 8 in the envelope. Surely, I think, she had written to wish me luck, ask about my life and tell me the news from 1 9 to make me at ease. However, for now it's 2 0 to look at her handwriting on the envelope, and to remember that until I open it, I know I'll hear from her once more.

1 ． A ． delighted B ． confused C ． terrified D ． moved

2 ． A ． envelope B ． package C ． ticket D ． stamp

3 ． A ． art B ． sports C ． flight D ． military

4 ． A ． special B ． hard C ． particular D ． different

5 ． A ． flee B ． leave C ． abandon D ． escape

6 ． A ． landed B ． returned C ． disappeared D ． delivered

7 ． A ． until B ． when C ． unless D ． after

8 ． A ． Surely B ． Thankfully C ． Doubtfully D ． Unfortunately

9 ． A ． removed B ． misplaced C ． hid D ． tore

1 0 ． A ． slowly B ． seriously C ． hurriedly D ． carefully

1 1 ． A ． appeared B ． stood C ． kept D ． remained

1 2 ． A ． sorted through B ． set aside C ． brought down D ． gave away

1 3 ． A ． posted B ． forgot C ． found D ． addressed

1 4 ． A ． ensured B ． borrowed C ． achieved D ． carried

1 5 ． A ． received B ． opened C ． touched D ． replied

1 6 ． A ． nodded B ． lifted C ． shook D ． lowered

1 7 ． A ． complain B ． inquire C ． worry D ． wonder

1 8 ． A ． words B ． interests C ． puzzle D ． secret

1 9 ． A ． network B ． abroad C ． papers D ． home

2 0 ． A ． appropriate B ． enough C ． foolish D ． polite

请你根据以下图示，判断李军的行为是 (    )

A ． 无故旷课，网吧上网 B ． 无证驾驶，路上飙车

C ． 拾到手机，拒绝归还 D ． 敲诈勒索，数额巨大

—Hongqiao Airport, sir, please! I’ll be there by 10.

—___________, but I’ll try my best.

A. I can’t promise    B. No problem           C. All right                    D. It’s impossible

端午节的传统习俗有包棕子、吃咸鸭蛋和赛龙舟等，棕叶飘香，说明分子在______；一只咸鸭蛋的质量约为60______（填单位）；赛龙舟时人用力向后划桨，船向前行，说明力的作用是______的。

In Miss Lin’s class, many chances___________ to students to learn from each other.

A. offer       B. offered       C. are offering       D. are offered

A、B、C、D、E为初中教材中常见的不同类别的五种物质，其中A是目前世界上年产量最高的金属，D是人体胃液中的一种酸，B和C反应生成一种蓝色沉淀。它们之间的反应关系如右图（图中“——”表示相连两种物质能发生反应）。

（1）A的化学式___________，B属于_________（选填“酸、碱、盐、单质、氧化物”）。

（2）写出C+E反应的化学方程式___________，E的用途_______________（写一种）。

下列植物的食用部位与其所属器官连接错误的是（ ）
A. 马铃薯—茎 B. 胡萝卜—根 C. 菜豆—果实 D. 洋葱—根

小明骑自行车 2min 行驶 600m ，他的平均速度为 ______ m/s 。马拉松运动员跑步的平均速度为 10km/h ，若二者在公路上以各自的平均速度同时向西运动，以自行车为参照物，马拉松运动员向 ______ （选填 “东”或“西”）运动。

下图为尿的形成过程示意图（序号表示结构），以下说法正确的是

A. ①为肾单位
B. ②通透性增加可导致血尿
C. ③内流动的是血液
D. ④为输尿管

阅读下面的文字，按要求作文。  

寒冬时节，夜晚显得特别冷，风总是特别渗人。晚自修下课，我急匆匆走回家，妈妈端来一碗热气腾腾的排骨炖萝卜汤，说:“孩子，趁热喝了，暖暖身子。”我皱了皱眉头，不领情地嘀咕道:“做的都是你想吃的，又不是我想吃的。”

  以上文字给你什么联想和感悟，请以“你和我”为标题，写一篇记叙文或议论文。

  要求:自定立意；符合文体；不要套作，不得抄袭。不少于600字，文中不能出现真实的人名、地名、校名等。

某实验步骤如下:①将盆栽天竺葵放到黑暗处一昼夜:②用黑纸片将叶片的一部分上下两面遮盖起来(如图所示),置于阳光下照射;③一段时间后,摘下叶片进行脱色、漂洗、滴加碘液。关于该实验的叙述不正确的是

A. 步骤①的目的是将叶片中原有的淀粉运走耗尽
B. 脱色的方法是将叶片放入盛有酒精的小烧杯中隔水加热
C. 滴加碘液后,可观察到遮光部分变成蓝色
D. 该实验能证明绿叶在光下制造淀粉

At table, we Chinese use c______, while foreigners use knives and forks.

2017年“一带一路”国际合作高峰论坛，倡导以和平合作、开放包容、互学互鉴、互利共赢为核心的丝路精神。这顺应了当今世界经济的发展趋势是
A. 经济全球化
B. “一超多强”
C. 信息化
D. 和平与发展

据交通运输部报道，截至 2020 年底，全国共有城市新能源公交车 46.61 万辆，位居全球第一．将 46.61 万用科学记数法表示为 ，则 n 等于（ ）

A ． 6 B ． 5 C ． 4 D ． 3

尿的形成是连续的，而尿的排出是间歇的，原因是（　　）
A. 肾小管的滤过作用 B. 肾小管的重吸收作用
C. 膀胱的贮存作用 D. 收集管的分泌作用

已知抛物线的顶点坐标为 (4 ， −1) ，与 y 轴交于点 (0 ， 3) ，则这条抛物线的解析式是 ______ ．