阅读理解---段落大意训练
Text 1
（蓉城名校联盟2025届高三入学考试）This continual climb in methane(甲烷) emissions is largely due to the continued use of fossil(化石）fuels rather than cleaner options, the researchers say. It's directly produced by oil, gas, and coal drilling and processing. The increasing release of methane from natural wetlands, caused by a hotter climate, is now also contributing. Methane is produced by rubbish sites, thawing permafrost, and animals too. The researchers, led by physicist and climate specialist Drew Shindell of Duke University in the US, suggest these are minor contributors at the moment- although ones that also need to be closely watched.
What is the second paragraph mainly about
A. The continued use of methane emissions.
B. Strategies for reducing methane emissions.
C. The impact of methane emissions on human health.
D. The contributions of sources to methane emissions
Text 2
(吉林市普通中学2024-2025学年度高中毕业年级第一次模拟测试)Popcorn too expensive A simple donation would do. No cash Credit cards were acceptable. He set up in front of local stores, working 12 hours a day. He even struck a deal with a car dealer: In all his sales efforts, he'd wear a mask with the company's logo if the owner would buy popcorn for all his employees.
25. What is paragraph 4 mainly about
A. Challenges Jonathan met in sales.
B. Help that the car dealer provided.
C. Marketing strategies Jonathan used.
D. The role the reward program played.
Text 3
（太原市2024-2025学年第一学期高三年级期中血液诊断）To make the project successful, Cassandra and her team educated themselves on the biodiesel（生物柴油） refining process, made their own biodiesel with proper safety measures, secured two separate youth seed grants, and persuaded community leaders to support the initiative.They identified a non-sustainable emergency heating program and the issue of pouring used fats and oils down into drains as key problems in their community. "All of our problems have snowballed together," Cassandra said. She and her team puzzled over how to combine these problems to get a one-off solution. An article on collecting and recycling cooking oil settled the deal.
25. What is the second paragraph mainly about
A. The article the teenagers published.
B. The scientific basis of the recycling.
C. The financial problem the team faced.
D. The practice of advancing the project.
Text 4
（四川省2025届高三年级第一次联合诊断性考试）This not only shows China's remarkable achievements in space exploration but also reflects its cultural pride and rapid advances in science and technology. By integrating traditional Chinese cultural elements into modern technology, China showcases its unique charm and great power to the world. Meanwhile,the public naming initiative encourages citizens to engage in the space program, creating a closer link between the space and the people.
30. What is the last paragraph mainly about
A. The technical descriptions of the new spacesuits.
B. The cultural pride behind China's space exploration.
C. The future prospect of the China Manned Space Agency.
D. The international development in space technology.
Text 5
(贵阳市2025届高三年级11月质量检测)Occasionally, though, we weep for joy. Scholars find it perplexing, because it seems counterintuitive(违反直觉的）that we would respond to overwhelmingly positive emotions with a negative expression. New research conducted in several countries found that happy crying tended to occur on four occasions: times of extraordinary affection, such as weddings (55 percent of positive crying, on average); moments of unusual achievement, such as winning an award (29 percent);awe in the face of beauty, such as exquisite music (8percent); and intense amusement (3 percent). Classifying it, though, doesn't make it seem any more logical.
30. What does Paragraph 3 mainly talk about
A. Reasons for happy crying.
B. Responses to happy crying.
C. Times of unusual affection.
D. Occasions for negative emotions.
Text 6
（2025年1月济南市高三期末学习质量检测）We also found a surprising commonality in how people around the world perceive wisdom in others, with both the key dimensions receiving a similar weighting across all cultures. This commonality is likely rooted in fundamental human needs: get ahead and get along. The former involves recognizing who is competent to make things happen, which is consistent with reflective orientation. The latter requires abilities related to social emotional awareness.
35. What does the last paragraph focus on
A. Distinctions between human needs.
B. Similarity in rating wisdom.
C. Methods of gaining wisdom.
D. Interflow among cultures.
Text 7
(南宁名校2025届高三第一次适应性测试考前演练)The media we consume, and the people we're around affect how we dress and express ourselves. When I was in high school, I was afraid to wear the clothes I wanted. When I wore an item that seemed normal for a girl like me but was considered strange by my classmates - a bright purple dress- people laughed at me in the hall. I remember putting it into the back of my closet(衣柜）and never wearing it again.
25. What does the author aim to show in paragraph 2
A. It's hard to insist on our decision.
B. Dignity is linked with what people wear.
C. Views of the majority can be wrong.
D. People may be pressured to satisfy others.
Text 8
（太原市2025年高三年级模拟考试）As I was digging deep, titles like "Fewer than 100Foley Artists Remain Active Worldwide" indeed struck me hard. I stumbled upon the sad truth that while Foley work is an incredible addition to movies, the small number of working artists today may put it on the path to becoming a dying art. However, Foley work, to my relief, may change as virtual reality develops. Next time you're watching a movie, remember those subtle sounds.They are like secret messages from Foley artists, reminding us they're always there.
26. What does the last paragraph imply
A. Foley work may be redefined in the future.
B. Modern audiences are well aware of Foley work.
C. Foley artists may soon be replaced by virtual reality.
D. Foley work is no longer a must as technology develops.
Text 9
（太原市2025年高三年级模拟考试）If you're digitally skilled, it has likely been a while since you spent much time writing by hand. The laborious process of tracing out our thoughts, letter by letter, on the page is becoming a thing of the past in our screen-dominated world, where text messages and thumb-typed grocery lists have replaced handwritten letters and sticky notes. To keep up, many schools are introducing computers as early as preschool, meaning some kids may learn the basics of typing before writing by hand. Although electronic keyboards offer obvious efficiency benefits, giving up handwriting may come at a significant cost.
28. What does the author intend to convey in paragraph 1
A. Abandoning handwriting is unwise.
B. Digital literacy is essential nowadays.
C. Handwritten communication is out of date.
D. Computer courses are urgently needed in preschools.
Text 10
(甘肃一诊暨2025年甘肃省高三月考试卷)And age is no object: “It’s not incredible being 102. You just get up every day and go about your business. It’s the present moment which counts--and this one was very special indeed,” the centenarian says.
What does the author imply in the last paragraph
Age is a barrier to flying.
Age benefits charity flights.
Age can’t limit one’s activities.
Age only counts in business.
Text 11
（2024-2025学年海口市重点中学高三年级仿真考试）Ice cream has the sweetness and fat people long for; it's cold and the only food people eat that way. The attractiveness is also mental. Almost everyone has memories of being a kid, going to an ice cream truck or grocery store, and getting ice cream, and they're drawn to things that bring happiness, like those memories of a summer day, eating ice cream with family. It's the ultimate comfort food.
26. What does paragraph 3 mainly talk about
A. Ice cream's bond with childhood.
B. The composition of ice cream.
C. The mental impacts of ice cream.
D. Reasons for ice cream's appeal.
Text 12
（石家庄市2025接普通高中毕业年级教学质量检测）One common explanation is that organized sports haven't bounced back. When people learned to exercise with less money, equipment, space, time and organization, they kept individual activities. Meanwhile,there are now fitness apps for users to tailor workouts based on their heart rates and sleep quality. The rise of wearables has also got some of us addicted to our own exercise routines.
29. What is paragraph 3 mainly about
A. Negative effects of collective sports.
B. Methods of choosing wearables.
C. Reasons for the shift to individual fitness.
D. Tailored workouts with fitness apps.
Text 13
（2025年济南市高三模拟考试）It's a classic complaint in relationships, especially romantic ones,"She said she was okay with me forgetting her birthday! Then why is she throwing dishes in the kitchen Are the two things related "
28. What does the complaint in Paragraph 1 mainly indicate
A. The inconsistence between words and meaning.
B. The importance of remembering vital moments.
C. The necessity of straightforward communication.
D. The unavoidability of argument in a couple's life.
Text 14
（新疆维吾尔自治区2025年普通高考第二次适应性检测）The tax is designed to clean up the country's agricultural pollution and eventually restore some farmland to its natural form, like peatlands(泥炭地）.Denmark's quest is also part of a reflection for many agricultural powerhouses, as these countries face calls to reduce pollution from farms. Globally, the food system accounts for 25% of greenhouse gases, and reducing those emissions requires making tough choices on diets,jobs and industries. Meanwhile, farmers are victims of the threat of climate change, with heat, droughts and floods worsened by the burning of fossil fuels, which makes food an extremely annoying climate problem to take on.
34. What does paragraph 5 mainly focus on
A. The challenges of farmers.
B. The significance of the tax.
C. The restoration of peatlands.
D. The development of food system.
Text 15
（重庆市高2025届学业质量调研抽测）What followed were years of additional testing of the drug's effectiveness for a range of cancers in multiple human studies involving over 200 patients. The positive effects displayed again and again. YIV-906 not only reduced the side effects of radiation treatment, but also led to faster recovery and longer survival rates.
26. What does paragraph 3 mainly talk about
A. The steps of the drug testing.
B. The application of YIV-906.
C. The effects of the clinical trial.
D. The effectiveness of YIV-906.
Text 16
（2025年陕西省高考适应性检测）Looking ahead, Long is excited to welcome college life. She hopes to give back to society and become a volunteer like her teachers and help more children plant the seeds to grow and thrive.
27. What can we know about from the last paragraph
A. More seeds will grow into plants.
B. Society will support Long's future life.
C. Long will work as a volunteer teacher.
D. Long will struggle to learn in the college.
Text 17
（长春市2025届高三质量检测）Each birthday, Charlie Jeffers would receive brand-new building block sets. One day in 2020 he was home building with them when it struck him that many kids couldn't play with building blocks because of its cost." Building blocks bring me a lot of joy, and I want to spread that joy to other kids," he said. Given that some unwanted building block bricks may end up in landfills,he decided to do something to address the problem.
24. What do we know about Charlie from paragraph 1
A. He had much interest in receiving holiday gifts.
B. He showed concern for kids without building block bricks.
C. He only wanted to give his deserted toys to others.
D. He was eager to collect outdated building block bricks in landfills.
Text 18
(成都市2025届高中毕业班第二次诊断性检测)However, undeniable convenience as these systems offer, there's something special autonomous about the tasks they aim to replace. Learning to drive,or even folding laundry is not just chores but the very fabric of our human experience. The first time you got behind the wheel of a car gave you a moment of growth and independence. Folding laundry can be a quiet,reflective moment- a reminder that life is made up of simple rhythms.
33. What does paragraph 3 mainly focus on
A. The value of routine experiences.
B. The freedom through technology.
C. The reflections on personal growth.
D. The room for improving autonomous systems.
Text 19
（南昌市2025届NCS高三模拟检测）While maintaining a positive mindset can go a long way, burnt toast theory is not without its drawbacks. Be mindful that only allowing yourself to focus on positive thoughts can mean that you are denying yourself the chance to properly engage with challenging or difficult emotions, instead focusing on creating a false positive profile.
30. Which aspect of the theory does the last paragraph focus on
A. Would-be projects.
B. Real-world applications.
C. Potential weaknesses.
D. Practical advantages.
Text 20
（2025年广州普通高中毕业班综合测试）The situation is made worse by the loss of special taste components. These elements work together to create a rich flavor. They can make our brain sense more sweetness even when the sugar level stays the same. However, in modern farming, people have accidentally removed the genes(基因）for these taste components while focusing on higher output and disease mercial pressures also play a role. For easier shipping, tomatoes are harvested before they are mature and subjected to cold storage. These practices unintentionally affect how flavor-giving chemicals are released, leaving tomatoes structurally undamaged but flavorless.
30. What is paragraph 3 mainly about
A. The advantages of gene selection.
B. The roles commercial practices play.
C. The challenges tomato farming faces.
D. The reasons behind less-flavored tomatoes.
Text 21
(武汉市2025届高中毕业生二月调研考试)Genetic analyses reveal two plant hormones, auxin and ethylene, play a role in how corn roots respond to water. While auxin was already known to help control this process, ethylene's involvement was a new discovery. In experiments with thale cress - a model plant often used in research-the researchers found auxin signaling promotes root branch development toward water, while ethylene stops branching when the root is exposed to air.
34. What does paragraph 5 mainly talk about
A. Model plants in research.
B. Hormones' role in root growth.
C. Genetic analysis methods.
D. Findings of previous research.
Text 22
（南京市、盐城市2025届高三年级第二次模拟考试）Brandon Shaw described the experience
as transformative, saying it helped him connect with his own weaknesses, something he had previously kept hidden. He sent the letter he wrote to his father. It arrived soon. He said he didn't expect a response and just hoped his father would read it. As Bridgewater puts it, fatherhood is just about "being honest and sharing".
27. What is the main idea of the last paragraph
A. The severity of parental issues.
B. DSSC's influence on its members.
C. The necessity to identify weaknesses.
D. Bridgewater's devotion to fatherhood.
Text 23
(郑州市2025年高中毕业年级第二次质量预测)Jurman believes that butterflies play a crucial role in our ecosystems. They're very low on the food web, so they support a lot of different species that rely on them.They're an indicator species for the health of the environment. Once they disappear, everything else is soon to follow.
24. What does paragraph 2 mainly talk about
A. The food chain of insects.
B. The competition between species.
C. The potential danger to butterflies.
D. The vital role of butterflies in nature.
Text 24
(2024-2025学年第二学期杭州市高三年级教学质量检测)When Alexander Fleming returned to his lab in1928, he found a bacteria culture he had grown was infected by fungus(霉菌), killing any colonies it touched. Rather than simply starting over, Fleming switched his focus to the fungus. He identified the bacteria-killing substance, which he called " penicillin", and seemingly at a single stroke, created the new field of antibiotics(抗生素）.
That's how most people see innovation: A flash of brilliance. Then eureka! A new world is born. The truth, however, is messier. It wasn't until 1943 that penicillin came into widespread use.
28. What are the first two paragraphs mainly about
A. An account of a lab story.
B. Redefinition of a traditional view.
C. Correction of a popular misconception.
D. An analysis of a scientific phenomenon.
Text 25
（2025年高考综合改革适应性演练）Jim Johnson, a mail carrier, was an institution in the leafy Westmoreland, Westhaven and Westover Hills neighborhoods, just north of downtown Wilmington, where he delivered much more than the mail. He knew all the kids and their pets by name; he carried in the groceries; he took note of unlocked doors, offered gardening advice, and taught more than a few young boys the art of the curveball. When he wasn't doing all that, Jim was running across a checkerboard of green lawns(草坪）to ensure the local postal service did not fall short of its daily promise.
24. What do we know about Jim Johnson from the first paragraph
A. He's open-minded.
B. He's sharp-eyed.
C. He's warm-hearted.
D. He's strong-willed.
Text 26
（高考考前冲刺满分模板卷）Like the echolocation(回声定位）system bats use, the iAid maps environments using sound waves. Basically, the iAid is a belt with four sensors, attached to a small joystick. When it's used inside, sound waves bounce off objects. The sensors communicate with the joystick, which turns in the direction the user should go,allowing the person to navigate(导航）around barriers without using a walking stick. When used outside, the iAid uses a positioning system, Bluetooth, and a cloud service to send information to the user's smartphone.
26. What does paragraph 3 mainly discuss about iAid
A. Its usage conditions.
B. Its navigating sensors.
C. Its operating principle.
D. Its application platform.Text 1
D 理解段落主旨要义 根据第二段的“This continual climb in methane emissions... cleaner options""The increasing release of methane... and animals too”可知，甲烷排放量的持续攀升主要是由于化石燃料的持续使用。由于气候变暖，自然湿地释放的甲烷越来越多，这也是原因之一。此外，垃圾场、融化的永冻土和动物也会产生甲烷。由此可知，第二段主要介绍的是甲烷排放的促成因素。
Text 2
25.C 理解段落主旨要义 根据第四段内容可知，如果觉得爆米花太贵，纯粹的捐助也可以。如果没带现金，信用卡也是可以的。他把地点设在当地的商店门口，一天营业12个小时。他甚至和一个汽车经销商达成协议以卖出更多爆米花。所以可知该段主要讲述了为了把爆米花卖出去，Jonathan使用的一些营销策略。
Text 3
D 理解段落主旨要义 第二段第一句讲到了 Cassandra 和她的团队为了让项目取得成功，积极开展各项准备工作，涉及学习生物柴油精炼知识、自制生物柴油并注重安全、争取资金和社区支持等方面；第二句讲到了他们将一个不可持续的紧急供暖计划，以及将用过的脂肪和油倒进下水道的问题确认为他们社区的关键问题；接下来提到了她和团队的思考以及最终的解决方案来源。综上，该段主要讲述了Cassandra和她的团队是怎么推进项目的。故选D项。A项“青少年发表的那篇文章”；B项“循环利用的科学依据”；C项“团队面临的财务问题”；D项“推进项目的落实”。
易错点拨：本题易错选B项，B项虽提及“biodiesel refining process,youth seed grants,emergency heating program”等，但该段并不是在讲回收的科学原理，这些词只是在推进项目落实工作的过程中被提及的词语而已。
Text 4
B 理解段落主旨要义 最后一段讲这不仅显示了中国在太空探索方面取得的卓越成就，也反映了中国的文化自豪感和科技的快速进步，通过将中国传统文化元素与现代科技相结合，中国向世界展示了其独特的魅力和强大的力量，同时公众命名活动鼓励公民参与太空计划，在太空和人之间建立更紧密的联系。由此可知，本段主要讲述中国太空探索背后彰显的文化自信与科技进步，故选B。A项“新航天服的技术说明”；C项“中国载人航天工程办公室的未来前景”；D项“空间技术的国际发展”。
Text 5
30.A 理解段落主旨要义 第三段第一句谈到我们偶尔会喜极而泣，然后谈到了因高兴哭泣的四个时刻，所以该段主要说明了新的研究发现的因高兴而哭泣的四个原因，故答案为A。A项“快乐的哭泣的原因”；B项“对快乐的哭泣的反应”；C项“不寻常的感情时期”；D项“负面情绪的时刻”。
Text 6
B 理解段落主旨要义 最后一段指出，世界各地的人们在评价他人智慧时存在一个令人惊讶的共同点，即两个关键维度在所有文化中都得到了类似的权重。这表明不同文化对智慧的评价有相似之处。选项中的Similarity和文章中的commonality属于同义表达。A项“人类需求的区别”；B项“评价智慧的相似性”；C项“获得智慧的方法”；D项“文化之间的交流”。
Text 7
25.D推断根据第二段的“The media we consume,and the people we're around affect how we dress and express ourselves"和"people laughed at me in the hall... never wearing it again"可知，作者认为我们接触的媒体和周围的人会影响我们的穿着和自我表达，在高中时她喜欢的一件裙子被人嘲笑，她就把它放到了衣柜的最里面，再也没有穿过。结合首句中作者的观点以及作者的经历可知，作者想要说明人们有时候会迫于压力去迎合他人。A项“坚持我们的决定是困难的”；B项“尊严与人们的穿着有关”；C项“大多数人的观点可能是错误的”；D项“人们可能会被迫迎合他人”。故选D项。
Text 8
26.A 推断 根据最后一段的“However,Foley work,to my relief, may change as virtual reality develops”可知，随着虚拟现实的发展，电影音效工作可能会发生变化，也就意味着可能会被重新定义，故选A,“may be redefined”与文中的“may change”存在语义关联。B项“现代观众很了解电影音效工作”；C项“电影音效师可能很快被虚拟现实取代”；D项“随着技术的发展，电影音效工作不再是必需的”。
Text 9
28.A理解具体信息第一段先描述了在屏幕主导的世界里，手写逐渐被打字取代，很多学校在幼儿园时期就引入了计算机，一些孩子可能先学打字后学手写的现象，接着指出“Although electronic keyboards offer obvious efficiency benefits, giving up handwriting may come at a significant cost”，即尽管电子键盘具有明显的效率优势，但放弃手写可能会付出巨大的代价。由此可知，作者在第一段想要表达放弃手写是不明智的，故选A。B项“如今数字素养至关重要”；C项“手写交流已经过时”；D项“幼儿园迫切需要计算机课程”。
Text 10
C 推断 通读最后一段可知，作者认为年龄不是问题，Jack说102岁没什么不可思议的，每天照常生活，当下才重要，结合他102岁还进行飞行活动可推断，作者在最后一段暗示“年龄不能限制一个人的活动”，故选C。A项“年龄是飞行的障碍”；B项“年龄有利于慈善飞行”；D项“年龄只在商业中重要”。
Text 11
D 理解段落主旨要义 第三段介绍了冰淇淋具有人们渴望的甜味和脂肪；它是冷的，也是人们唯一以这种方式食用的食物。它的吸引力也在于心理层面。几乎每个人都有小时候去冰淇淋车或杂货店买冰淇淋的记忆，他们被那些带来快乐的东西吸引，如那些在夏日与家人一起吃冰淇淋的记忆。这是终极的安慰食品。分析以上内容可知，本段从身体层面（第一句）和心理层面（第二至三句）分析了冰淇淋吸引人们的原因。故选D。
Text 12
C 理解段落主旨要义 第三段开头提到有组织的运动还未恢复，人们学会在资源有限的情况下进行个人活动，接着指出健身应用程序和可穿戴设备的发展让人们保持着个人健身习惯。整体是在阐述人们转向个人健身的原因。故选C。A项“集体运动的负面影响”；B项“选择可穿戴设备的方法”；C项“转向个人健身的原因”；D项“用健身应用程序定制的训练”。
Text 13
28.A 推断 读题 题目问“第一段中的抱怨主要表明了什
么？”。A项“言语与意义之间的不一致性”；B项“记住重要时刻的重要性”；C项“直接沟通的必要性”；D项“夫妻生活中争吵的不可避免性”。
Text 14
34.B 理解主旨要义 根据第五段的“The tax is designed to clean
up the country's agricultural pollution... reduce pollution from farms"
可知，丹麦征收打隔和粪便税的目的是减少农业污染，并逐步将部分农田恢复为自然状态。丹麦的这一举措也是许多农业大国进行反思的一部分，因为这些国家面临着减少农业污染的呼声。由此可知，本段主要强调的是征收打隔和粪便税对治理农业污染，恢复农田以及对其他农业大国的借鉴意义。因此本段主要聚焦的是征收该税的意义。故选B
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D 理解段落主旨要义 根据第三段中的“testing of the drug's effectiveness" 和" YIV-906 not only reduced the side effects of radiation treatment, but also led to faster recovery and longer survival rates”可知，该段主要说明了药物试验的结果，证明了YIV-906的效果，故选D。A项“药物测试的步骤”；B项“YIV-906的应用”；C项“临床试验的效果”；D项“YIV-906的有效性”。
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27.C 理解具体信息 根据最后一段的“She hopes to give back to society and become a volunteer like her teachers and help more children plant the seeds to grow and thrive”可知，她希望像她的老师(志愿者）一样成为志愿者，帮助更多孩子，据此可知，她将从事志愿教师工作。故选C项。
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B 理解具体信息 根据第一段的“it struck him that many kids couldn't play with building blocks because of its cost. 'Building blocks bring me a lot of joy, and I want to spread that joy to other kids,' he said”可知，Charlie意识到很多孩子因积木的价格而无法玩积木，然而积木给他带来了很多快乐，他想把这份快乐传递给其他孩子。由此可知，他对没有积木的孩子表示关心，故选B。A项“他对收到节日礼物很感兴趣”；C项“他只想把自己废弃的玩具送给别人”；D项“他渴望收集废弃物填埋场里过时的积木”。
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A 理解段落主旨要义 第三段首句是段落主旨句，表明尽管这些自主系统带来了无可否认的便利，但它们试图取代的那些往务却有着独特的意义。接着以学习开车和折叠衣服为例，具体说明这些事情是人类经历的重要组成部分。由此可知，本段主要关注日常体验的价值，故选A。选项中的 routine experiences 指的就是第三段讲的学习开车、叠衣服等家务活。B项“通过技术获得的自由”；C项“对个人成长的思考”；D项“改进自主系统的空间”。
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30.C 理解段落主旨要义 根据最后一段内容尤其是其中的" While maintaining a positive mindset can go a long way, burnt toast
theory is not without its drawbacks”可知，烤焦面包理论是有缺点的，要记着只允许自己专注于积极的想法可能意味着你在拒绝自己妥善处理具有挑战性或困难情绪的机会。所以该段主要在说该理论的缺点。故选C。A项“潜在的项目”；B项“现实世界应用”；C项“潜在的弱点”；D项“实践优势”。
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30.D 理解段落主旨要义 读题 题目问“第三段主要讲了什
么？”。A项“基因选择的优势”；B项“商业惯例所扮演的角色”；C项“番茄种植面临的挑战”；D项“番茄味道变差的原因”。
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B 理解段落主旨要义 第五段首句是本段的主旨句，即基因分析显示，两种植物激素——生长素和乙烯——在玉米根系对水分的反应中发挥着作用，接着分别介绍两种植物激素所发挥的不同作用。所以第五段主要讲激素在根系生长中的作用，故选B。A项“研究中的模式植物”；C项“遗传分析方法”；D项“以前研究的发现”。
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B 理解段落主旨要义 最后一段首句讲 Brandon Shaw 认为自己参加DSSC的这段经历改变了自己，它帮助自己面对自己以前一直隐藏的弱点，接着提到Shaw给父亲写信这一具体行为，最后点明身为父亲要“坦诚、分享”。由此可知，本段主要介绍了DSSC对其成员的影响，故选B。
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D 理解段落主旨要义 根据第二段内容可知，首句“Jurman believes that butterflies play a crucial role in our ecosystems"(Jurman认为蝴蝶在我们的生态系统中扮演着至关重要的角色）为段落主旨句，后面内容（蝴蝶在食物网的位置很低，所以它们养活了很多依赖它们的不同物种。它们是环境健康的指示物种。一旦它们消失，其他的东西很快就会跟着消失）都是对这一句话的解释。所以本段主要讲述了蝴蝶在自然中的重要角色，故选D项。
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28.C 理解段落主旨要义 前两段先讲述了 Alexander Fleming
发现青霉素的故事，接着讲述绝大多数人们认为创新是灵光一闪，指出这是对创新的普遍误解，实际上青霉素从发现到广泛应用并非如此简单。所以前两段重点在于纠正这种普遍误解。故选C项。A项“叙述一个实验室的故事”；B项“对传统观点的重新定义”；C项“对一种流行误解的纠正”；D项“对一种科学现象的分析”。
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24.C 推断 读题 题目问“从第一段中我们可以知道 Jim Johnson的什么？”。A项“他思想开明”；B项“他目光敏锐”；C项“他热心”；D项“他意志坚强”。
解题 根据第一段的内容可知，Jim Johnson 不仅仅是送信件。他能叫出所有孩子和他们宠物的名字；他帮忙搬运杂货；他留意没有锁上的门，提供园艺建议，并教了不止几个小男孩曲线球的技艺。由此可知他非常热心，故选C项。
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26.C【命题立意】考查理解主旨要义的能力。
1 明题意 第三段主要讨论了iAid的什么方面？ 根据第三段内容，尤其是“the iAid maps environments using sound waves”
②寻线索
" sound waves bounce off objects. The sensors communicate with the joystick" 和" the iAid uses
a positioning system... send information to the user's smartphone"可知，第三段主要讨论了iAid的工作原理。A“它的使用条件”；B“它的导航传感器”；C“它的工作原理”；D“它的应用平台”
