
生命的起源和演化一直是人类探索的焦点,在生命的长河中,有两个关键的生物类别——真核生物和原核生物,虽然它们在形态、结构和功能等方面存在明显的差异,但它们都承载着无尽的生命力量。本文将详细介绍真核生物和原核生物的区别,带你一起探秘生命的奥秘。
一、结构差异
真核生物是一类有细胞核的生物,其细胞包括细胞核、细胞质和细胞膜等结构。细胞核是真核生物最为显著的特征之一,其中包含着遗传信息,指导着生物体的生长和发育。而原核生物则没有细胞核,其遗传物质直接存在于细胞质中。此外,原核生物的细胞结构相对简单,没有细胞器和细胞膜等复杂结构
二、基因组差异
真核生物的基因组相对复杂,包括DNA和RNA等多种类型的遗传物质。真核生物的DNA编码了蛋白质的合成信息,而RNA则在蛋白质合成的过程中发挥重要作用。与之相比,原核生物的基因组相对简单,主要由DNA构成,通常只含有少量的RNA。这也是为什么真核生物在遗传变异和进化方面具有更大的潜力和灵活性。
三、代谢方式差异
真核生物的代谢方式相对复杂多样,能够进行有氧呼吸、无氧呼吸和发酵等多种代谢途径。这使得它们能够适应不同的环境和生存条件。而原核生物的代谢方式相对简单,通常只能进行一种或几种特定的代谢途径。这也是为什么真核生物能够在不同的环境中生存和繁衍,而原核生物的适应范围相对较窄的原因之一。
四、进化历史差异
在生命的长河中,原核生物是最早出现的生物类别之一。它们在极端条件下的生存和繁衍为地球上的生命的演化提供了重要线索。而真核生物的出现则使得生命的多样性和复杂性更上一层楼。真核生物通过吞噬、共生等方式融合了多个原核生物,从而形成了更为复杂的细胞结构和功能,并逐渐演化出了植物、动物和真菌等各种不同的生物类别。
真核生物和原核生物在结构、基因组、代谢方式和进化历史等方面存在着显著差异。真核生物具有更为复杂的细胞结构、多样化的基因组和代谢方式,以及更高的适应能力。而原核生物虽然简单,但它们在生命的起源和演化过程中发挥着重要的作用。通过研究这两个类别的生物,我们能够更好地理解生命的奥秘,揭示生物多样性的真谛。
小提示:在这里我强烈推荐大家使用善利AI高考备考系统,为什么我一定要说它,因为它题库里面每道高考精选真题和高考模拟题都做了多维度、多角度、多标签标注和归类,考点考查频率/难度系数五星级匹配,20%高考高频考点承载80%高考分数。
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平均速度和瞬时速度是物理学中常用的两个概念,它们用于描述物体在运动过程中的速度变化情况。虽然它们都涉及速度,但它们的定义和计算方法却有很大的区别。
首先,我们先来看看平均速度。平均速度是指物体在某段时间内的总位移与总时间的比值,即速度的平均值。它的计算公式可以表示为:
平均速度 = 总位移 / 总时间
举个例子,假设一个小汽车在2小时内行驶了200公里,那么它的平均速度就是200公里/2小时=100公里/小时。
与平均速度不同,瞬时速度是指物体在某一瞬间的速度,即速度的瞬时值。瞬时速度的计算是通过求出物体在某一瞬间的微小位移与微小时间的比值,并在求极限时得到的。
瞬时速度 = 微小位移 / 微小时间
举个例子,假设一个小汽车在某一瞬间的位移是5米,经过0.1秒的时间,那么它的瞬时速度就是5米/0.1秒=50米/秒。
从这两个计算公式可以看出,平均速度是用总位移除以总时间得到的,它是对整个运动过程的速度进行平均。而瞬时速度则是在某一瞬间的速度,它描述了物体在某一时刻的运动状态。
此外,还有一个重要的概念是瞬时速度的导数,即加速度。加速度是指物体在单位时间内速度的变化率,它与瞬时速度密切相关。
物理中的平均速度和瞬时速度从定义和计算方法上有所不同。平均速度描述的是整个运动过程中的速度平均值,瞬时速度描述的是某一时刻的瞬时速度。它们之间的区别在于时间的取样粒度,平均速度取样时间段相对长,而瞬时速度取样时间段很短甚至可以趋近于零。
至此,我们对物理中的平均速度和瞬时速度有了更深入的了解。这两个概念在物理学和实际生活中都有着重要的意义,它们帮助我们更好地理解和描述物体的运动状态。
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高考是每一个学生都不能回避的大考,它不仅仅是一次对知识的测验,更是对学生素质和能力的全面考察。为了在高考中取得理想的成绩,很多同学不仅要精心备考,还需要一些好的学习工具来提高自己的学习效率。而学习机善利AI,作为一款专门为高考而设计的学习辅助工具,将会是你冲刺高考成功的好帮手。
首先,学习机善利AI拥有强大的智能学习功能,可以根据学生的学习情况和需求,智能推荐适合的学习资料和方法。不同的学生有不同的学习习惯和学习方式,学习机善利AI可以根据这些差异,自动调整学习内容,确保每一个学生都能够得到有效的学习指导。通过学习机善利AI的帮助,学生可以更好地掌握学科知识,提高学习效果。
其次,学习机善利AI还具备高效提分的功能。它可以根据学生的学习情况,制定个性化的学习计划,并提供相应的学习资源和题目练习。学习机善利AI会根据学生的答题情况,实时分析学生的薄弱环节和易错点,并给出相应的解题策略和讲解,帮助学生解决问题,提高解题能力。通过学习机善利AI的指导,学生可以更加系统地学习知识,提高各科成绩,实现高分冲刺。
此外,学习机善利AI还具备智能评估和监控功能。它可以根据学生的学习表现,进行全面的学习评估,并生成详细的学习报告。通过学习机善利AI的监控和评估,学生可以更加清楚地了解自己的学习情况,及时发现问题并加以解决,提高学习效率。
综上所述,学习机善利AI作为一款专为高考设计的学习辅助工具,具备智能学习、高效提分和智能评估监控等多项功能,可以帮助学生更好地备考并取得理想成绩。在备战高考的道路上,选择学习机善利AI将是明智之选。让学习机善利AI成为你的得力助手,冲刺高考成功,开启人生新篇章!
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加油,少年!
今天,1342万条“锦鲤”就要通过2024高考 跃向自己的星辰大海了! 放下压力,尽情发挥 愿你们都能拿到心仪的录取通知书 去想去的地方,见想见的人 你,值得一个更好的前程!
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高考是每位学子人生中的重要时刻,关系到他们未来的道路和发展。在这篇文章中,我们将探讨如何利用AI工具和策略来帮助学生们在高考中提分,为他们打下梦想的基石。
首先,让我们来谈谈如何有效地利用AI学习工具。现代AI技术可以根据学生的个性化需求提供个性化的学习计划和建议。通过分析学生的学习习惯、知识掌握程度和考试表现,AI可以针对性地推荐适合的学习材料和练习题,帮助学生事半功倍。而且,AI还能够根据学生的学习进度和理解能力自动调整教学内容和节奏,确保学生在最佳状态下进行学习。
其次,AI在提供个性化学习辅助的同时,也可以帮助学生进行高效的复习。传统的复习方式可能存在瑕疵和不足,很难全面地涵盖知识点。而AI可以通过大数据分析和机器学习算法,精准地找出学生易错的知识点,并提供有针对性的解题策略和技巧,帮助学生做到有的放矢,高效备考。同时,AI还可以利用自然语言处理技术,将大量文本转化为易于理解和记忆的图表、关键词等形式,让学生更好地整理和掌握知识。
除了个性化学习和复习辅助外,AI还可以帮助学生提升应考技能和应对策略。考试除了对知识的掌握程度,更考察考生的应变能力、时间管理能力和解题能力。AI可以模拟真实的考试环境,提供高质量的模拟题库和模拟考试,帮助学生熟悉考试形式和题型,锻炼应对策略。AI还可以通过对历年高考试题、模拟题和其他学生答题数据的分析,提供科学合理的解题思路和方法,帮助学生提高解题速度和准确率。此外,AI还可以通过实时监控学生的答题情况和进度,及时发现和纠正学生的错误和问题,确保学生在考试中发挥出最佳水平。
综上所述,AI技术在高考备考中具有巨大的潜力和优势。通过利用AI学习工具,个性化学习辅助和模拟考试等功能,学生们可以更全面、高效地备考,提高分数和竞争力。而AI还能帮助学生调整心理状态和保持良好的身体习惯,为他们创造良好的备考环境。相信有了AI的助力,学生们必将在高考中迎刃而解,迈向更加光明的未来!
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扔掉那一层一层的练习册,不要在无脑的刷题啦!学习讲究方法,刷题要有方法的刷题,科学合理化刷题,方可做到事半功倍,今天的这篇文章大家一定得好好看。
有效的刷题
从1977年恢复高考,到现在,基础知识就这么多,考点也就这么多。数学23个一级考点、70个二级考点、167个三级考点,每一次高考命题也就覆盖考点140左右,几年下来基本上没有太大变化,他不管题目怎么变,什么样的形式出,始终就是考这些。所以就是我一直在说的科学合理的刷题,刷题是必要的,但是盲目刷题就是没必要的,选择近几年高考真题,是最有价值的,因为高考出的题目是符合逻辑的,首先就是把高考真题每一道搞清楚,每一道后面的考点搞清楚。
提升效率
高考阶段,对于同学们来说时间是最珍贵的,因此能够提升效率减少时间浪费的方法还是需要的。在线备考系统通过人工智能+大数据技术,诊断出考生学科短板,智能推送相关学科短板对应的考点视频讲解、往年考试真题及各校模拟题给考生进行补短训练,快速弥补短板。
错题收集
自动收集答错的题目、收藏的题目。想知道某一科的错题情况,可以点击错题本。
考生分析
备考系统为考生提供考试数据分析,能够生成详细的考生报告,这些报告对于后续的提升起到很重要的作用,备考系统会自动记录答题数量、答题得分率、试卷数量,还可以针对某一科进行详细的分析。
总结下来,虽然备考系统能够很大程度提升效率,但还是需要学生对自己有计划,因为备考系统始终是一个工具,它不会强制性让你学习,所以这一点是至关重要的!
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高考理科是许多学生感到头疼的科目,因为它们需要更多的逻辑思维和分析能力。但是,如果你想在短时间内提高你的理科成绩,那么善利AI将是你的最佳选择。
善利AI是一个专门针对高考的学习平台,它结合了大数据分析和人工智能技术,为考生提供个性化的学习方案。以下是几个使用善利AI快速提高理科成绩的方法:
精准定位,对症下药:首先,善利AI会对你的基础知识进行全面的测试,从而了解你的实际水平。然后,它会根据测试结果,为你提供个性化的学习计划和推荐相应的学习资料。这样,你可以更加有针对性地复习,节省时间并提高效率。
智能推荐,高效学习:善利AI会根据你的学习进度和掌握程度,智能推荐练习题目。这些题目会覆盖所有重要的知识点,并且难度适中,让你能够更快地掌握知识,提高学习效率。
模拟测试,实战演练:善利AI提供了大量的模拟测试题目,你可以在考试前进行实战演练。这些题目不仅覆盖了所有的知识点,而且难度与真实考试相当,可以帮助你熟悉考试形式和时间管理,减少考试紧张情绪,此外还有错题本实时帮助你记录错题,减少整理的时间。
个性化学习,因材施教:每个学生都有自己的特点和优势,善利AI可以根据你的个性特征和学习能力,提供个性化的学习方案。这样,你可以更好地发挥自己的优势,提高学习效果。
总之,如果你想在高考理科中快速提分,那么善利AI将是你的最佳选择。它结合了大数据分析和人工智能技术,为考生提供个性化的学习方案。赶快加入我们吧!
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在高考备考过程中,阅读理解是一个不可或缺的部分,而读后续写更是考查学生综合运用英语能力的重要环节之一,本文将结合近几年的高考趋势,为大家提供一些读后续写的预测攻略,希望能给广大考生带来一些帮助。
1. 阅读下面材料, 根据其内容和所给段落开头语续写两段, 使之构成一篇完整的短文。
I was driving on the road on a hot day, feeling my back sweating as my air conditioner of the car was broken. A boy, looking exhausted ran quickly towards me, eager to sell his coconuts. He looked like he was only about 12 years old and his skin was dark. Judging from his appearance, he seemed to have already known the bitterness of life. "Coconut, 20 naira each." He said in a low voice. I felt so thirty, so I didn't bargain with him and bought one. I gave him 50 naira. He didn't have the change, so I asked him not to worry. He said thanks and passed me another, smiling and showing a row of perfect teeth.
Another couple of weeks later, I met him again at the same place. I had learned more about the poor community where it was not that uncommon to see a little boy who should be in school standing on the corner selling fruit in the hot sun. My parents had raised me to be aware of the advantages we had been afforded and the responsibilities it brought to us.
I stopped and rolled down the window. He had a couple of coconuts, which were so heavy to carry that he had to sit in the corner. "What's wrong? Why not go to school?" I said. "I... I haven't got enough money to get a textbook." I took out two new 500-naira bills from my pocket. "Is that going to work?" I said. He glanced nervously about before he accepted them. A thousand naira is a great deal for a boy whose family is likely to earn five thousand naira or less every year. "Thank you very much sir," he said, with tears rolling down his cheeks. "Many thanks!"
When I was on my way home, I was thinking about whether or not my little friend was really using that money for school books. What if I was taken in? Then I thought about why I did it. Did I do it to make myself feel better? It occurred to me afterwards that I did not know his name or the least bit about him, and it never occurred to me to ask him.
注意:
1.续写词数应为150左右;
2.请按如下格式在答题卡的相应位置作答。
One afternoon in September, I went to the poor community again.
__________________________________________________________________________________________________________________________________________________________
The boy led me into his house.
__________________________________________________________________________________________________________________________________________________________
参考范文:
One afternoon in September, I went to the poor community again. I walking along the narrow road, shabby houses and people in rags came into my sight. A wave of sympathy and bitterness crowded in, my eyes watered. A little figure appeared in my view, who was sorting out coconuts. Getting closer, I was amazed to find it was my little friend. In the meantime, he also recognized immediately. Overcome with excitement and astonishment, he froze, standing rooted to the spot. Having recovered from his shock, he invited me to his house.
The boy led me into his house. It was nearly empty and rarely furnished with anything. However, what made me surprised was that there were many books piled up in the corner. "Thanks to your money, now I can read books whenever I want," he grinned. So moved was I that I had a lump in my throat. That afternoon, I asked everything about him, feeling closer to him. It was then that I was more conscious of my responsibility to help him and the poor. This time I knew I wasn't take advantage of him just to ease my mood.
题目解析:
本文以人物为线索展开,讲述了作者开车时遇到一个卖水果的小男孩,得知他没有钱买书,作者给这个小孩一些钱,但走后又担心自己被骗,连小男孩的名字都不知道,后来作者去了一个贫困社区,在那里再次遇到这个小男孩,小男孩领作者回家,作者了解到他的境遇并且知道自己的钱真的帮助小男孩读书了,很感动,从那时起,作者更加意识到有责任帮助他和穷人。
【详解】1.段落续写:
①由第一段首句内容"九月的一个下午,我去了一个贫困社区。"可知,第一段可描写作者再一次见到小男孩的经过。
②由第二段首句内容"乔把我领到他家。"可知,第二段可描写作者得知自己的钱真的帮助了小男孩,并且被小男孩感动。
2.续写线索:再次见到——认出——问了名字——去小男孩家——感谢——感动——意识到有责任帮助他和穷人。
3.词汇激活
行为类
1.认出,承认:recognize/ acknowledge
2.帮助:help/ assist
3.利用:take advantage of / make use of
情绪类
1.感动的:touched/moved
2.惊讶的:amazed/astonished
【点睛】
[高分句型1] It was then that I was more conscious of my responsibility to help him and the poor. (强调句)
[高分句型2] However, what made me surprised was that there were many books piled up in the corner.(what引导的主语从句和that引导的表语从句)
2. 阅读下面材料, 根据其内容和所给段落开头语续写两段, 使之构成一篇完整的短文。
"Why are we bringing groceries for Mrs. Killinger?" Bobby asked his mother, Anna, as they walked back from the supermarket with a few extra bags for their elderly neighbor. He enjoyed helping his mother with these tasks, but they had never bought anything for any neighbor before.
"Honey, Mrs. Killinger is now having trouble walking around, so I offered to bring some things from the market," Anna explained as they climbed up the wooden steps to Mrs. Killinger's house and rang the doorbell.
"Ok, but she could get a wheelchair and move around," the boy commented as if it was the most straightforward solution in the world.
"You know, Bobby. Mrs. Killinger doesn't have the money to buy one right now.
They can get expensive." Anna explained, and Bobby pursed his lips in thought.
Mrs.Killinger answered the door, smiled, and invited them for some coffee and cookies. Bobby noticed how slowly she moved, and an idea formed in his mind. He told the older woman and his mother all about it, and they grinned at him indulgently (宽容地笑).Neither of them thought Bobby would do it.
That's why Anna was surprised the following day when Bobby had made several ads. "Mom, can you add your phone number here, so people can call me with work?"
"Oh, honey. This is very sweet. But I don't know if it'll be enough to raise the money she needs to buy a wheelchair," Anna explained. She loved that her son had such a big heart, but he didn't want him to be heartbroken if no one called or he couldn't raise the money.
"Well,at least,I can say that I tried to help," Bobby chirped (欢快地说)with his bright smile and eager eyes. Anna nodded and added her phone number to the ads. In his ad, Bobby offered his "services" which included helping with shopping, mowing lawns, keeping company, and walking dogs. He also left the price of his services, which made Anna smile. He honestly just wanted to help.
注意:
1. 续写词数应为150左右;
2. 请按如下格式在答题卡的相应位置作答。
Anna helped him put up the ads around the neighborhood.
__________________________________________________________________________________________________________________________________________________________
Two weeks later, Bobby still hadn't raise the amount of money he wanted.
__________________________________________________________________________________________________________________________________________________________
参考范文:
Anna helped him put up the ads around the neighborhood. Very quickly Bobby's ads spread around. Amazed to hear that a ten-year-old was offering his services to help an elderly woman, people from all over the city started calling and asking Bobby to do jobs for them. Soon he was asked to walk dogs, buy groceries, and mow lawns for people. Meanwhile Mrs. Killinger was very pleased with the extra companionship Bobby provided and Bobby quickly gained a reputation as a reliable and kind helper. Seeing the funds increasing, Bobby felt more than delighted.
Two weeks later, Bobby still hadn't raised the amount of money he wanted. But Bobby didn't give up. He continued to offer his services to anyone who needed it. Bobby even started a GoFundMe page and shared it on his social media accounts, hoping to reach more people. His efforts paid off when a local news station shared his story, and more people offered their support. Thanks to his hard work and kindness, Bobby was finally able to raise enough funds to purchase a new wheelchair for Mrs. Killinger.
题目解析:
本文以人物为线索展开,讲述了小男孩Bobby在看到邻居Mrs. Killinger没有能力购买轮椅之后决定帮忙筹钱,于是他制作了广告,通过提供自己的服务而获得报酬从而为Mrs. Killinger买轮椅。
【详解】
1.段落续写:
①由第一段首句内容"Anna帮他在附近张贴广告。"以及第二段首句"两个星期过去了,Bobby仍然没有筹集到他想要的金额。"可知,第一段可描写Anna帮Bobby张贴广告后,Bobby开始了自己的筹钱行动。
②由第二段首句"两个星期过去了,Bobby仍然没有筹集到他想要的金额。"可知,第二段可描写Bobby虽然没有筹集到足够的钱却没有放弃,反而加倍努力。
2.续写线索:Bobby感到疑惑为什么邻居太太不自己去买东西——妈妈说邻居太太走路有困难,但是又没有钱买轮椅——Bobby突然有了个想法,想帮助邻居太太买轮椅——Bobby做了广告,想通过为别人提供服务换取报酬,从而为邻居太太买轮椅——Bobby的想法得到了妈妈的支持——Bobby很努力地赚钱,却还凑不足足够的钱——Bobby并未放弃,努力最终带来了回报
3.词汇激活
行为类
①提供:offer/provide
②放弃:give up/abandon
③希望:wish/hope
情绪类
①吃惊的:amazed/astonished
②满意的:pleased/satisfied/content
【点睛】
【高分句型1】Amazed to hear that a ten-year-old was offering his services to help an elderly woman, people from all over the city started calling and asking Bobby to do jobs for them(运用了that引导的宾语从句)
【高分句型2】Meanwhile Mrs. Killinger was very pleased with the extra companionship Bobby provided and Bobby quickly gained a reputation as a reliable and kind helper.(运用了省略关系代词的定语从句)
3. 阅读下面材料, 根据其内容和所给段落开头语续写两段, 使之构成一篇完整的短文。
There is one incident in my life that makes me want to say thank you to the person involved.
My story happened in June, 1975. It began when my family was finally notified that we had successfully met all the requirements to emigrate (移民) to Canada.
We immediately set about selling our household goods to have enough money to start our life in a new country.
However, our government only allowed us to use a small portion of the money to pay for the flight tickets. The rest was required to be sent directly to a bank account in Canada. The only cash we were allowed to take along with us was $16.
We started our journey. It was the first time my children and I had left our home country, and the first time we had travelled by plane. We were filled with a mixture of excitement and nervousness. Everything was new to us, especially the concept of in-flight entertainment. In our home country, we did not yet have access to televisions, so the thought of watching movies during the flight was thrilling.
However, our excitement quickly turned into disappointment when we realized that headphones were not provided for free. The stewardess informed us that headphones cost $1 for economy class passengers. My children looked at me with longing eyes, asking if they could have a dollar for a set of headphones which they intended to share. Deep down, I knew that we couldn't afford to spend any of our limited cash on headphones, not even a single set.
Unwillingly, I explained the situation to my children, preparing for their disappointment and understanding that they would have to go without headphones for the duration of the flight. My children accepted it without complaint. But our disappointment must have shown clearly.
注意:
1. 续写词数应为150左右;
2. 请按如下格式在答题纸的相应位置作答。
A gentleman nearby handed his headphones to us, smiling, without saying a word.
__________________________________________________________________________________________________________________________________________________________
This incident definitely had a powerful effect on my children and encouraged them to spread kindness.
__________________________________________________________________________________________________________________________________________________________
参考范文:
A gentleman nearby handed his headphones to us, smiling, without saying a word. The children's faces lit up with joy. They put the headphones on and settled into their seats for the long flight. I was touched by the kindness of the stranger who had given us his own headphones. It was a small gesture, but one that made a big impact on our family. From that moment on, our family felt a renewed sense of hope and gratitude for the journey we were embarking on. We felt like we were not alone and that there were good people in the world who cared.
This incident definitely had a powerful effect on my children and encouraged them to spread kindness. They made a promise to themselves to always be kind and helpful to others. As we settled into our new life in Canada, my children began to actively look for opportunities to spread kindness. They would offer help to their classmates and neighbours, volunteer at community events, and donate their time and resources to those in need. Their actions not only made a difference to the lives of others, but also brought them a sense of fulfillment.
题目解析:
本篇文章以人物为线索展开。作者一家满足了移民加拿大的要求后,乘坐飞机飞往加拿大,在飞机上孩子们想要用耳机看电影,但作者他们没钱买,就在这时一位绅士把自己的耳机给了孩子们,他的善意感染了作者一家,对作者的孩子们产生了深刻影响。
【详解】
1. 段落续写:
由续写第一段首句"旁边的一位先生把耳机递给我们,面带微笑,一言不发。"可知,第一段可以描写孩子们拿到耳机后的兴奋,以及这位先生的善意对作者一家的影响,让他们感受到自己并不孤独,世上处处有好人。
由续写第二段首句"这件事对我的孩子们产生了巨大的影响,鼓励他们传播善意。"可知,第二段可以描写孩子们受到这位先生的影响,到了加拿大后积极帮助他人。
2. 续写线索:一位先生给孩子们耳机——孩子们愉快地使用耳机——作者一家深受感动——孩子们受到鼓舞并决定帮助他人——孩子们在加拿大积极寻找传播善意的机会——他们的行为改变了别人的生活,也给自己带来了满足感
3. 词汇激活:
行为类
①对……产生重大影响:make a big impact on/have a great influence on
②开始:embark on/set out
③寻找:look for/seek
情绪类
①高兴地:with joy/delightedly/happily/with delight
②感动的:touched/moved
③感激:gratitude/thankfulness/appreciation
【点睛】
【高分句型1】We felt like we were not alone and that there were good people in the world who cared.(使用了and连接并列的宾语从句、there be结构、who引导定语从句)
【高分句型2】As we settled into our new life in Canada, my children began to actively look for opportunities to spread kindness.(使用了As引导时间状语从句、不定式作宾语和后置定语)
成长类:
1. 阅读下面材料, 根据其内容和所给段落开头语续写两段, 使之构成一篇完整的短文。
At the end of my junior year, election for student body officers caused quite an excitement among students. It appeared that Debbie would run unopposed for president. Talking among a group of dissatisfied girls, I whispered, "There must be someone who'd run against her."
Suddenly Liz focused her attention on me. "Why not you?"
"Me? No way. I work after school. I can't stay for all those meetings. "
My closest friend, Linda, smiled, "Why not? Just think how great our senior year would be! You could get a real senior trip approved and get better bands for the dances. "
My little group continued to ignore my protests as they imagined the wonderful changes I could make. By the end of the week, they'd gotten enough signatures to put my name on the ballot (选票).
Debbie and I had very different campaign styles. Because I was always skipping around, I earned the name "Rabbit". Signs soon appeared around campus with the slogan (口号) "Make your votes count with Rabbit!" My platform aimed for more fun and less restrictions. We wore uniforms and I advocated more free dress days and a broader interpretation of what was acceptable on regular dress days.
My opponent, on the other hand, avoided any implication of silliness on her posters. Catchy slogans had no place in her serious campaign. What she offered was the opening Lawn to all students and a reformatting of the yearbook that would mix ninth through twelfth graders rather than highlight seniors in oversized photos. Gone would be the yearbook with seniors' quotes and many exciting activities. Lowerclassmen (低年级生) loved Debbie's idea; would-be seniors, however, were angry.
My classmates supported me and were confident they could persuade enough lowerclassmen to vote my way. Each day I got reports of a few more of lowerclassmen coming to my side.
On election day, I felt fairly confident. I was even looking forward to quitting my job and focusing on school politics.
注意:1. 所续写短文的词数应为150左右;
2. 续写部分分为两段, 每段的开头语已为你写好。
However, by the end of the day, the votes were counted and Debbie was declared the winner.
__________________________________________________________________________________________________________________________________________________________
That's when I noticed my teacher Mr. Laskey, who turned to me and smiled. "Congratulations!"
__________________________________________________________________________________________________________________________________________________________
参考范文:
However, by the end of the day, the votes were counted and Debbie was declared the winner. And I had only one vote less than Debbie! Disappointment seized me! At the same time, I felt ashamed of myself, for I had pictured more than once to defeat Debbie, and I had been thinking my platform had more advantages. What's more, my classmates were so supportive to me. How could I face them? I rushed to the library and found a corner, sitting alone, weeping and lost in a bad mood.
That's when I noticed my teacher Mr. Laskey, who turned to me and smiled. "Congratulations!" Hearing this, I was totally at sea. Mr. Laskey stroked my head, saying gently, "I admire you for being so courageous to challenge yourself! There is no doubt that Debbie is outstanding, but so are you! You are absolutely promising!" Greatly encouraged, I wiped my tears, bidding farewell to Mr. Laskey and walking confidently to my supporters. Though I didn't become president, I was still excited to be one of the student body officers. I thanked them, and decided to serve both juniors and seniors wholeheartedly.
题目解析:
本文以人物为线索展开。作者在同学们的鼓励下参加学生会主席的竞选,结果以一票之差败给了竞争对手,作者心情沮丧,跑到图书馆去哭。老师到来鼓励作者,老师的话让作者找回自信,并决定全心全意地为所有学生服务。
【详解】
1.段落续写:
①由第一段首句内容"然而,在那天结束的时候,选票被统计出来了,黛比被宣布获胜。"可知,第一段可描写作者竞选失败后的感受和举动。
②由第二段首句内容"这时我注意到了我的老师拉斯基先生,他转向我,对我微笑。‘恭喜你!'"可知,第二段可描写老师的认可和鼓励让作者找回自信,并决心全心全意为学生服务。
2.续写线索:同学鼓励参加竞选——为竞选准备——竞选失败——沮丧哭泣——老师认可、鼓励——找回自信——决心为所有学生服务
3.词汇激活
行为类
①想象:picture / imagine
②轻抚:stroke / fondle
③击败:defeat / beat
情绪类
①茫然:at sea/at a loss
②激动的:excited / thrilled
【点睛】
[高分句型1] I felt ashamed of myself, for I had pictured more than once to defeat Debbie, and I had been thinking my platform had more advantages.(由for引导的原因状语从句)
[高分句型2] I rushed to the library and found a corner, sitting alone, weeping and lost in a bad mood.(由现在分词sitting alone和weeping作伴随状语)
[高分句型3] There is no doubt that Debbie is outstanding, but so are you! (由连词that引导的同位语从句)
2. 阅读下面材料, 根据其内容和所给段落开头语续写两段, 使之构成一篇完整的短文。
"Hey! Ms. Woodall!"
It was Saturday. My daughter and I were touring a model home in a new development where she and her husband had just purchased a small plot of land. She was showing me something in the backyard-the kind of landscaping she was imaging, I think — when I heard that familiar twang (鼻音) call out my name.
I turned around. Standing in the yard was a little boy, stocky, brown-haired and dusted with a fine layer of dirt. "William!" I cried in surprise. "What are you doing here?
"I'm helping my daddy lay sod (草皮)," he answered proudly, sticking his chest out. William's father owned a lawn sodding company.
"This is William," I told my daughter. "One of my students. He a joy to have in class." The seven-year-old beamed, the blazing Florida sun bouncing off his round cheeks.
It was true. Little William was a delight. He adored plants and animals and playing outside during break time. And even though he struggled with his reading, he never once complained. There was a brightness he brought with him wherever he went.
I'd never forget the day in class when another student was having trouble understanding the lesson. "Don't worry," William told her, eyes wide and sincere. "Sometimes, second grade is really hard." He was a gentle soul, wise beyond his years.
Still, I couldn't help but worry. Despite his steadfast determination, William's grades were poor. Some days, I wondered if he'd be able to pass.
"See you Monday, Ms. Woodall!" he said, running to his father's side. My daughter and I waved, but William stayed on my mind for the rest of the weekend.
Back at school, William's grades showed no sign of improvement. Until the last few weeks of the year, when we studied the lifecycle of plants, William excelled. As a class project, each child planted a sunflower seed in a container. Planting the seeds was exciting for many of the students, but most kids had little patience for the growing part and forgot to care for their sunflowers-to-be.
注意:
1.续写词数应为150左右;
2.请按如下格式在答题卡的相应位置作答。
But unlike them, William had great enthusiasm all along.
__________________________________________________________________________________________________________________________________________________________
About a month into the summer vacation, I happened to drive by the school.
__________________________________________________________________________________________________________________________________________________________
参考范文:
But unlike them, William had great enthusiasm all along. Every afternoon, he made sure that all the containers were watered. By the last week of school, the plants had been about 10 centimeters tall. Seeing that, I felt extremely amazed. In years past, few seeds successfully grew. And those that did had never got so tall. But these sunflowers were different. It was thanks to William that they could grow so tall. Later, I talked with William and we finally decided to move them to the ground behind the library and hoped for the best.
About a month into the summer vacation, I happened to drive by the school. To my great surprise, there, behind the library, stood William's sunflowers, looking very healthy and strong. All of them were at least 3 meters tall, with their faces toward the sun. At that moment, I knew that there was no need for me to worry about William since a special seed had already been planted inside him. I strongly believed that one day, he would bloom and shine—just like his sunflowers.
题目解析:
本文以人物为线索展开,讲述了作者的学生威廉是个讨人喜欢的人,喜欢植物和动物,但是成绩很差,作者怀疑他是否能通过考试。但是一次种植向日葵的班级项目中,威廉耐心给植物浇水,向日葵都生长得很好,他们最终决定把它们移到图书馆后面的地面上,并希望得到最好的结果。过了一个暑假,作者开车经过学校,看到了在图书馆后面,威廉种植的向日葵看起来非常健康和强壮。
【详解】
1.段落续写:
①由第一段首句内容"但与他们不同的是,威廉一直热情高涨"可知,第一段可描写威廉是如何照顾向日葵的以及向日葵的生长情况。
②由第二段首句内容"大约一个月进入暑假,我碰巧开车经过学校"可知,第二段可描写作者看到了学校的向日葵生长得很好。
2.续写线索:威廉给向日葵浇水——向日葵长得高——移出向日葵——作者经过学校——看到威廉种的向日葵长势良好——感悟
3.词汇激活
行为类
看到:see/notice
谈话:talk with/chat with
相信:believe/hold the belief that
情绪类
惊讶:amazed /surprised
担心:worry about/be concerned about
【点睛】
[高分句型1] Every afternoon, he made sure that all the containers were watered. (运用了that引导宾语从句)
[高分句型2] It was thanks to William that they could grow so tall. (运用了强调句)
亲情类:
1. 阅读下面材料, 根据其内容和所给段落开头语续写两段, 使之构成一篇完整的短文。
Mama's Soup Pot
There are too many treasures in life we take for granted, the worth of which we don't fully realize until they're pointed out to us in some unexpected way. So it was with Mama's soup pot.
Mama's soup was special because there was no recipe for it. It had been so since her girlhood in Italy, where she learned its secret from her grandma, who had inherited (继承) it from generation to generation. Also, it was a symbol of security. For our large immigrant family, Mama's soup guaranteed we would never go hungry. And we could judge our economic conditions by its contents.
At one time, however, Mama's soup pot became a source of embarrassment to me, for I feared it would cost me a new friend I had made at school. Sol was an unusual pal for me because his father was a doctor and they lived in the best part of our town. Often Sol invited me to his home for dinner, where I found the food was good but tasteless, lacking the heartiness of the one served from my mom's flame-blackened pots. Moreover, the atmosphere matched the food and everything was so formal. Sol's mother and father were polite, but the conversation around the table was not natural, which made me a little depressed. And no one hugged!
In my family, warm hugs were a constant-men, women, boys and girls-and if you didn't kiss your mother, she demanded: "What's the matter? You sick?" But at that time in my life, all this was an embarrassment.
I had known Sol would like to eat dinner at my house, but that was the last thing I wanted. My family was so different. No other kids had such pots on their stoves, nor did they have a mama whose first action upon seeing you enter the house was to sit you down with a spoon and bowl.
One day, Sol pointedly asked if he could come to my house. I had to say yes.
注意:
1. 续写词数应为150左右;
2. 请按如下格式作答。
The day Sol came over I was nervous.
__________________________________________________________________________________________________________________________________________________________
But Sol quickly finished his bowl and asked for one more.
__________________________________________________________________________________________________________________________________________________________
参考范文:
The day Sol came over I was very nervous. Mama and the other family members welcomed him with embraces. Soon after sitting at the heavy, deeply stained table, we were instantly faced with bowls of soup. "Sol," Mama asked, "you know what this is?" "Soup?" Sol responded. "Not soup," Mama said emphatically. "It's minestrone!" She then launched into a long explanation of the power of minestrone: how it cured headaches, colds. And Mama even said the soup would make Sol strong. I was so embarrassed, convinced that this would be the last time I would ever see my friend Sol.
But Sol quickly finished his bowl and asked for one more. His initial hesitation gave way to genuine enjoyment. And as the evening progressed, I saw him relax, his rigid posture melting away in my family's easy atmosphere. When we were saying our good-byes, Sol confided, "You sure have a great family." Then he added, "Boy, you are lucky!" Lucky? I wondered. Suddenly, it dawned on me that true wealth wasn't measured in polished silver or spotless kitchens. It was found in the simple joys of family, laughter, and a steaming bowl of Mama's minestrone soup.
题目解析:
本文以人物为线索,讲述了作者的母亲做的意大利浓菜汤能够让经济条件不好的移民家庭不挨饿,但作者觉得一份水汪汪的汤暗示着艰难的时期,有一段时间妈妈的汤锅成了他尴尬的来源。作者在学校交了一个好朋友Sol,他的家虽物质条件优渥,但缺少了作者家中那种由母亲的汤所象征的爱、温暖及随意自在的家庭氛围。Sol想要去作者的家里用餐,但是因为家庭环境的不同,作者并不想他到自己家里来。
【详解】1.段落续写:
①由第一段首句内容"索尔来的那天,我非常紧张。"可知,第一段可描写作者描写Sol来作者家里吃饭时,作者家人热情的款待Sol,尤其是作者的妈妈,详细的给他解释了什么意大利浓菜汤。作者因此感到非常尴尬,觉得会失去Sol这个朋友。
②由第二段首句内容"但是索尔很快吃完了他的碗,又要了一碗。"可知,第二段可描写Sol非常喜欢妈妈的做的意大利浓菜汤,并让作者意识到真正的财富存在于简单的快乐之中,存在于母亲做的意大利浓菜汤里。
2.续写线索:答应索尔来做客——热情款待——介绍意大利浓菜汤——尴尬——索尔喜欢意大利浓菜汤以及作者家的家庭氛围——感悟
3.词汇激活
行为类
①欢迎:welcome/greet
②询问:ask/question/inquire
③开始做某事:launch into/jump into/dive into
情绪类
①紧张的:nervous/uneasy
②快乐:enjoyment/delight
【点睛】【高分句型1】And as the evening progressed, I saw him relax, his rigid posture melting away in my family's easy atmosphere (使用了as引导的时间状语从句)
【高分句型2】 Suddenly, it dawned on me that true wealth wasn't measured in polished silver or spotless kitchens.(使用了that引导的主语从句)
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如何在高考备考中有效地进行三轮复习,成为了每位考生必须掌握的技巧和策略,本文将详细阐述高考三轮复习的方法,帮高考生们在复习的过程中事半功倍,提升自身的考试能力。
一、什么是三轮复习?
三轮复习是指高考复习的三个阶段:第一轮复习、第二轮复习和第三轮复习,每一轮复习都有其独特的目标和方法,通过这三轮的复习,可以帮高考生更好地掌握知识点、巩固记忆以及提升应试技巧。
1. 第一轮复习:打基础
在第一轮复习中,学生需要对高中三年的知识体系进行全面回顾和理解,此阶段的主要任务是夯实基础,梳理知识框架。学生可以通过以下方式进行第一轮复习:
教材精读:认真阅读教材,每一节课都要做到全面理解,争取掌握书中的每一个知识点。对难度较大的知识点,可以多花时间反复琢磨,确保理解透彻。
笔记整理:在复习过程中,建议做详细的笔记,将各个学科的重要知识点、公式、定理等进行总结。笔记不仅可以帮助理解,还可以作为后续复习的参考。
习题训练:通过做课后习题,特别是近几年的高考真题,加深对知识的理解。在练习时,要求自己不看答案,独立思考并解决问题。
2. 第二轮复习:突破重难点
第二轮复习的目的是针对第一轮复习中发现的薄弱环节,进行针对性的强化训练,考生可以采取以下策略:
制定计划:根据第一轮复习的情况,制定详细的复习计划,明确每天的复习内容和任务。建议将重难点进行分类,有针对性地制定复习策略。
专题复习:可以针对某一知识点进行集中复习和练习,确保每个知识点都能熟练掌握。
模拟考练习:定期进行模拟考试,模拟真实考试环境,提高自己对时间的把握和应试能力。同时,可以通过模拟考评估自己的复习效果,及时调整复习策略。
3. 第三轮复习:查漏补缺
第三轮复习是在离高考不远的时候进行的,目的是全面复习和查漏补缺。考生需要根据自己的复习情况,进行有针对性的复习:
复习错题:重点复习在前两轮中做错的题目,弄清楚错误的原因,确保下次不再犯同样的错误。
知识梳理:将所有的知识点进行再次梳理,把握章节之间的联系,形成完整的知识体系。
正确的心态:保持良好的心态,不要因为临近高考而过于紧张。适当进行心理调适,学会放松,保持清晰的头脑。
二、复习方法与技巧
除了掌握三轮复习的框架,考生在复习中也需要掌握一些有效的复习方法和技巧,以提高复习的效率。
1. 时间管理
合理的时间管理是提高复习效率的关键,考生可以使用番茄工作法,将复习时间分为25分钟的高效学习和5分钟的休息,这样可以避免长时间学习带来的疲惫感,提高注意力集中度。
2. 制定复习计划
制定清晰的复习计划表,包括每天的复习任务和内容,避免临时抱佛脚,计划表可以根据个人的复习进度进行调整,以适应自己的学习节奏。
3. 利用多种学习工具
利用善利AI高考备考系统等,可以丰富复习方式,通过观看视频课程,可以对某一知识点有更直观的理解,笔记软件还能帮助快速整理和查找知识点。
三、心态与身体调节
复习过程中,良好的心态和身体健康同样重要。
1. 保持积极心态
复习过程中难免会遇到挫折和困难,考生应学会自我调节,保持积极的心态,可以通过与朋友或者老师沟通,释放压力,寻求支持和建议。
2. 注意饮食与作息
身体是革命的本钱,考生应重视饮食均衡和良好作息,保证充足的睡眠,有助于记忆和思考能力的提升。在复习期间,尽量避免熬夜。
3. 适度锻炼
适量的运动能提高身体素质和精神状态,增强抵抗力。考生可以选择晨跑、做瑜伽或者参加团队运动,让身体保持健康,心情舒畅。
高考三轮复习不仅是知识的积累,更是对考生自我管理能力和心理素质的考验。通过合理规划和高效复习,考生们一定能在高考中充分发挥自己的潜力。希望每位考生都能够通过科学的复习方法,勇敢面对高考,取得理想的成绩。
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