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标题: 揽瓜阁训练营 第六十四天(含CR,RC和DI题目) [打印本页]

作者: 小白斩鸡    时间: 2024-2-15 10:39
标题: 揽瓜阁训练营 第六十四天(含CR,RC和DI题目)
前大家对揽瓜阁精读的反馈很好,就想着自己的时间开始把一些精读的文章根据JJ出题目~ 然后focus上线,IR需求 大家也大。就想着 把揽瓜阁的阅读 逻辑 IR 都放在这贴里打卡

每日的解析在揽瓜阁2024群更新

RC题源:揽瓜阁精读的文章+机经的题目
CR题源:本月中文JJ改编
IR题源: 往届鸡精改编

打卡内容:
一周打卡五篇,科目不限。
每天上午管理员群内发布题目,群成员做完提交打卡,第二天发布解析

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逻辑:写逻辑链分析
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【现在你的笔记越全,越能帮助你捋清思路,之后回顾总结。】
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1.CR
[attach]271403[/attach]
答案:
ab


2.RC
[attach]271404[/attach]
What is the main focus of the passage?
A. The economic impact of invasive species in North America.
B. Strategies for managing invasive species in forest ecosystems.
C. The disproportionate role of exotic insects as major pests in North America.
D. A unified theory of invasion ecology and its implications for forest management.
E. The historical and ecological factors influencing the invasion success of exotic species.
According to Kim and McPheron (1993), what percentage of North American insect pests are of exotic origin?
A. 2%
B. 40%
C. 50%
D. 60%
E. 80%
Why does the passage mention the research by Haack and Mattson?
A. To illustrate the effectiveness of current pest management strategies.
B. To provide an example of successful invasive species adaptation.
C. To highlight the increased propensity for outbreaks among alien sawflies.
D. To contrast the impact of alien vs. native species on forest ecosystems.
E. To question the accuracy of previous research on invasive species.
Based on the passage, which of the following research findings would most likely contribute to the development of a comprehensive theory of invasion ecology?
A. A study showing the economic benefits of certain invasive species.
B. Research identifying specific climatic conditions that deter invasive species.
C. An analysis revealing fundamental similarities in forest compositions between continents.
D. A survey of invasive species that have become beneficial to their new ecosystems.
E. An experiment demonstrating the role of human activity in facilitating species invasion.
What underlying assumption is made in the argument that North America and Europe’s ecological similarities facilitate herbivore exchange?
A. Invasive species are primarily transported by human activities.
B. Ecological and faunal similarities are more critical than climatic conditions.
C. European forest insects are inherently more adaptable than North American species.
D. Historical and geological differences between continents are negligible.
E. Management strategies in North America are inadequate to address the threat of invasive species.
答案:

3.DI
Chinese computer scientists at the Beijing Institute of Technology have been exploring the practical applications of solving NP-complete problems. Their research has focused on two well-known NP-complete problems: the Imperial Courier Problem (ICP) and the Emperor's Treasury Problem (ETP).

The ICP is a modern take on the classic Traveling Salesman Problem, where a courier in ancient China must deliver messages to every province's governor while traveling the shortest possible distance to return to the emperor in the Forbidden City. The objective is to find the most efficient route that connects all points without backtracking. While the ICP is NP-complete, the institute has developed heuristics that are believed to approximate the minimum distance within 2-3 percent.

The ETP is analogous to the Bounded Knapsack Problem, where the emperor's advisor must select the most valuable artifacts for a tribute to the emperor, constrained by the carrying capacity of the imperial caravan. The challenge is to maximize the "value" of the tribute within the weight limits set for the journey. The exact solution for the ETP is NP-complete.
E-mails:


E-mail #1: From a Professor at the Beijing Institute of Technology to the Research Team
Subject: Important: Advancements in Solving NP-Complete Problems and Cultural Significance
Dear Team,
I hope this message finds you well. As we delve deeper into our research on NP-complete problems, specifically the Imperial Courier Problem (ICP) and the Emperor's Treasury Problem (ETP), it's crucial to recognize the significance of our work beyond the realm of theoretical computer science. These problems, rooted in the rich tapestry of Chinese history, offer us unique insights into ancient logistical and treasury management practices.

Our efforts to develop efficient algorithms for these NP-complete problems could lead to groundbreaking advancements in modern logistics, optimization, and even financial planning. The ICP, inspired by the historical challenge of optimizing imperial courier routes, and the ETP, reflective of managing the emperor's treasury, are not just puzzles to solve—they are bridges to our past and tools for our future.

The cultural importance of these problems underscores the need for innovative thinking and collaboration. I encourage you to approach these challenges with creativity and a deep appreciation for their historical context.

Let's continue to work together towards solutions that honor our heritage while pushing the boundaries of what's possible in computational mathematics.

Best regards,
[Your Name]
Professor and Research Lead
Beijing Institute of Technology
E-mail #2: Research Assistant to the Professor
Subject: Request for Clarification on Computational Resources and Funding

Dear Professor [Your Name],

Following our recent discussions on the ICP and ETP projects, I've been analyzing the computational demands of expanding our research scope, particularly in terms of increasing the number of provinces for the ICP and artifacts for the ETP.

Our preliminary estimates suggest that doubling the number of provinces in our ICP simulations could lead to a fivefold increase in the required calculations, posing significant challenges to our current computational capacity. Similarly, for the ETP, adding even a single artifact appears to double the computation time required, based on the exponential nature of the problem.

Given these considerations, I wanted to inquire if there are plans to secure additional funding for expanding our computational resources. Enhancing our capacity would not only allow us to tackle these complex problems more effectively but also accelerate our progress towards developing practical solutions.

I look forward to your guidance on this matter and any steps we might take to address these challenges.

Sincerely,

[Your Name]
Research Assistant
Beijing Institute of Technology
E-mail #3: Professor to Research Assistant
Subject: Response to Computational Resource Concerns and Funding Update
Dear [Research Assistant's Name],
Thank you for bringing your concerns regarding the computational demands of our projects to my attention. Your diligent analysis highlights a critical aspect of our research into the Imperial Courier Problem (ICP) and the Emperor's Treasury Problem (ETP), particularly as we aim to expand the scope of our investigations.
I understand the challenges posed by the increasing complexity of these NP-complete problems, especially the exponential growth in computational time required for the ETP with each additional artifact and the significant increase in calculations for the ICP as we consider more provinces. Your insights are invaluable as we navigate these challenges.
I have good news to share. After discussing our needs with the institute's administration and presenting our case, highlighting the potential breakthroughs our research could lead to and its cultural significance, we have secured additional funding specifically allocated for enhancing our computational resources. This funding will allow us to upgrade our computing infrastructure, providing us with the capacity to handle the increased computational demands of our projects more effectively.
Furthermore, I am in talks with several technology partners who have expressed interest in supporting our research through the provision of advanced computing technologies and cloud-based resources. This collaboration could significantly reduce our computational time and open new avenues for our research.
I will keep you updated on our progress with these partnerships and the deployment of our upgraded resources. In the meantime, please continue with your current work and prepare for an upcoming meeting where we will discuss our strategy for utilizing these new resources effectively.
Your commitment to our research is greatly appreciated, and I am confident that together, we will overcome these challenges and make significant contributions to our field.
Best regards,
[Your Name]
Professor and Research Lead
Beijing Institute of Technology
[attach]271405[/attach]
What is the estimated time to solve the ETP if the number of artifacts increases from 20 to 21?A) 2,048 hoursB) 1,024 hoursC) 512 hoursD) Cannot be determined from the data providedIf the ICP requires 5,000 calculations for 10 provinces, how many calculations would be needed for 80 provinces?A) 625,000 calculationsB) 25,000 calculationsC) 125,000 calculationsD) Cannot be determined from the data providedBased on the e-mails, what is the relationship between the number of provinces and the number of calculations required for the ICP?A) The number of calculations increases exponentially.B) The number of calculations increases fivefold with each doubling of provinces.C) The number of calculations increases by a constant multiplier.D) The relationship cannot be determined from the information provided.Considering the research assistant's concerns, which problem would likely require a greater increase in computational resources when expanded?A) ICP with an increase in provincesB) ETP with an increase in artifactsC) Both require the same increaseD) Cannot be determined from the information provided




作者: 渣渣璐    时间: 2024-2-15 12:31
看一下
作者: 徐公子~    时间: 2024-2-15 12:50
CR1
我的答案:A
正确答案:A
P:某地区pasta是主食,制造商开始生产一种低热量pasta
C:公司认为如果新的低热量pasta被广泛接受,它有助于帮助大众减重
任务类型:前提
预判分析:排除他因导致体重增加
选项分析
A:正确,排除他因弥补减少的热量
B:没有其他低热量食物,取非如果有也不影响这款新产品的有效性——NOT NECESSARY
C:人们的口味偏好不会阻止他们选择新的低热量产品——反前提,前提假设如果popular
D:价格和有助于大众减重无直接关联——IRRELEVANT
E:人们不会在低热量pasta之外吃高热量的食物,高低热量对总热量摄入的关系未知——VAGUE

CR2
我的答案:D
正确答案:B
P1:新兴经济体的快速增长导致市场预计对原油的需求量会大幅增长
P2:原油生产量目前刚好满足工业国家的需求并且预计未来每年增幅有限
C:全球原油供给短缺不可避免
任务类型:前提
预判分析:供给缺口=(工业国家需求量+新兴国家需求量)-生产量>0,总需求量大于生产量,已知前提生产量基本稳定,前提需要保证总需求量增加
选项分析
A:新兴国家需求量无法降低,只解释了部分问题——NOT NECESSARY
B:工业国家需求量无法降低,只解释了部分问题——NOT NECESSARY
C:取非,只要需求增幅高过生产的涨幅,仍有可能存在缺口——NOT NECESSARY
D:原油使用效率不会大幅提高,总需求量不会大幅下降——CORRECT
E:取非,只要需求增幅高过生产的涨幅,仍有可能存在缺口——NOT NECESSARY

RC
我的答案:CBCDB
正确答案:EBCCB
文章类型:现象阐述型
文章主旨:介绍新进入北美的动植物对生态的危害,以及不同研究对此的解释
文章结构:
P1-介绍一种现象。过去500年,北美成了2000多种昆虫和2000多种草类植物的新的繁衍地,其中大部分演变成了有害动植物。不同数据和研究证据表明引入这些动植物对生态有负面影响。学者呼吁需要重新考虑如何遏制引入动植物的负面影响。
P2-目前没有关于入侵生态的统一的理论,但目前有一个关于“植物-草食动物互动关系”的研究提供了有价值的信息
作者: E杀G必成功    时间: 2024-2-15 13:23
CR

1. 新推出的Pasta,减少总卡路里摄入,达到减重,受欢迎

答案:A (在E中纠结不选E因为卡路里高低和摄取总量的关系不够清晰)

2. 原油需求上升,但目前生产量只能满足工业化国家和预期上涨不多。所以原油短缺的结果是不可避免的。

答案:B (基于的假设是工业国家需求量不会下降)

RC

- 在过去500年,北美变成了2000多种昆虫和杂草植物的新栖息地。
- 这些动植物慢慢演变成北美主要的生物,给当地生态系统造成了威胁
- exotic insects 占2%虫比,占40%害虫比
- Sawflies
- 开始警觉去减少这些新物种到来的不利影响

- 尽管很多研究通过气候和生态因素来探究生物侵入的成功,为啥成功的真正原因还是难解。
- 植物和食植物昆虫之间互动的研究解释了被侵入国家植物和侵入昆虫之间的关系。
- 北美和欧洲在生态系统环境和植物群的类似性助使食草动物的迁移。
- 然而,侵入北美如此成功可能在于北美的历史、地质、气候原因

答案:E B C C B





作者: Rita糖糖    时间: 2024-2-15 14:32
RC
E, B, C, B(C), B
2000 insect species came to North America,  large portion transitioned to pests, and alien sawflies outbreak more frequently than native.
the unified theory of invasion ecology is elusive. study of plant-herbivore interaction, invasion success rate depend on many different reasons
CR
A, B
作者: 为了G700    时间: 2024-2-15 16:15

R64 CR
第一题,结论是基于哪一个,加强选A.( 比E更全面的支持卡路里减少)
P:某地P是饮食的主要部分,一个制造商开始生产一种低卡路里的P。
C:如果新P畅销的话,会减少总卡路里的摄入,从而减少人口平均体重。

A.当地居民不会增加总食物的消耗去弥补新P的低卡路里.(取非,如果增加其他食物去弥补则无法减少总卡路里。)
B.当地没有其他的可替代的低卡路里食物。(无关)
C.居民的口味不会阻止他们选择低卡路里的P多于普通的P.(是畅销的前提)
D低卡路里P的单价和老P一样有竞争力,使得能够大多数居民能吃到.(是畅销的前提。)
E.习惯吃P的居民不会在新的P之外消耗其他卡路里丰富的食物.(可能本来的习惯里就有吃,只要总数不增加则好。)

第二题,结论是基于哪一个,加强选B.
P: 新兴经济的快速发展导致原油的需求上涨,但是现在全球原油的生产刚好满足工业国家的需求,而且预期在未来几年的增长是很少的。
C: 原油的短缺是必然的。

A. 新兴经济没有找到可替代原油的能源.(可能不缺,但是不是必然)
B. 工业国家油的消耗在未来不会发生很大的减少。(一个不变+增加=增加)
C. 工业国家原油生产率不会增加超过设定的水平.(重复了增加有限)
D.没有技术可以增加油的使用效率. (可能不缺,但是不是必然)
E. 现在油的生产是可持续生产的最大量.(生产量已经是条件之一。)
作者: 为了G700    时间: 2024-2-15 17:02

1.E
2.D
3.C
4.D
5.C

作者: 迷茫的小狗    时间: 2024-2-15 17:26
同意!               
作者: 为了G700    时间: 2024-2-15 17:31
Day 64 RC
第一段:在过去半个世纪,北美变成了大概2000种昆虫和杂草的新居所。这些昆虫的大部分变成了农业和森林害虫,威胁到生态系统。占北美昆虫2%的外来昆虫占据了主要害虫的40%,这种现象需要一个快速的管理评估去减少北美森林的不良影响。
第二段,一些基础的研究被导向去理解入侵成功的气候和生态决定因素,入侵生态的统一理论是不可捉摸的。但是植物与食草动物的相互作用的研究提供了有价值的洞察。但是在北美,欧洲森林昆虫的入侵成功比率取决于两个洲之间历史,地理以及气候的差异。

1.E,主旨题第一段和末尾段读出来。
2.❌D,答案B,单词exotic(外来的)不熟悉导致。
3. C,第一段倒数最后两句。
4. C,排除其他答案得出。
5.❌C,答案B,显然没读懂最后一段,所以错了。

陌生词:
pests:害虫
disparity:差距
weedy plant:杂草
exotic :外来的
disproportionate: 不成比率的
exacerbating:加剧了
invader: 入侵者
climatic and ecological determinants of invasion success:入侵成功的气候和生态决定因素
unified: 统一的
elusive: 难以捉摸的
plant-herbivore interactions: 植物与食草动物的相互作用
host plant: 寄主植物
invasion ecology: 入侵的生态学
faunal:动物区系
facilitate the exchange:促进交流
作者: Katelynns    时间: 2024-2-15 17:53
CR:1.AC纠结 两者取非都会对argument带来致命影响  A说明消费者不会额外摄入弥补减少的热量 对于argument结论的作用更直接;C则说明消费者偏好不会让顾客不选新款 如果影响,顾客对新品不感冒,那么公司推出新产品以减小当地人均体重方案无效 2. C
RC:
examples of invasive species in NA
what contributed to successful invasion?
EBBCB
作者: 凤梨罐头    时间: 2024-2-15 19:26
CR:AB
作者: 凤梨罐头    时间: 2024-2-15 19:40
RC:EBBDB
作者: 匕    时间: 2024-2-15 22:02
CR:
1)A
P:某制造商开始生产一种低卡路里的意面
C:吃这种意面会导致卡路里摄入减少,进而降低居民平均体重
Q:加强
思考方向:意面是主要的卡路里来源

2)B
P:新型经济体需油,但是现在油只能满足已工业化的国家且产量在未来几年不会增加很多
C:油的供应会出现短缺
Q:加强
思考方向:供给不会增加,需求不会减少
作者: Eunice12    时间: 2024-2-15 22:30
我的选项:AB
正确选项:
第一题:假设题
Premise: 面食是主食,低卡的面食变得流行
Conclusion : 降低整体卡路里的摄入➡️降低人口的平均重量
A:弥补样本偏差
B:无关
C:无关
D:价格无关
E:只针对部分群体

第二题:假设题
Premise: 发展经济体经历快速工业发展➡️预计原油需求会显著上升
Premise: 当前原油国际产量刚好满足发达国家的需求,预计接下来几年微小增长
Conclusion: 国际油供应会不可避免产生短缺
供给(发达国家、发展中国家)、需求(发达国家、发展中国家)
A:无关
B: 能弥补样本偏差
C:解释前提
D:纠结
E:无关
作者: rururu23    时间: 2024-2-15 22:49
滴滴
作者: pinx    时间: 2024-2-15 23:49
感谢分享!               
作者: pinkyland    时间: 2024-2-15 23:51
eacad
作者: Lorena700    时间: 2024-2-16 01:10
[attach]271407[/attach]

作者: victorfeng1234    时间: 2024-2-16 09:42
先对答案
作者: victorfeng1234    时间: 2024-2-16 09:46
CR 逻辑分析
第一题
我的答案 A 参考答案 A前提1: 推出了低脂产品
前提2: 低脂产品变得流行
结论:总脂肪摄入量变少
A 人不会增加产品消费总量

第二题
我的答案 A/B 参考答案 B
前提1: 发展中经济的石油用量会上升
前提2: 现在的石油总量只够工业化国家用
前提3: 石油产量不会显著上升
结论:石油将会短缺
A 发展中经济没法找到替代能源
B 工业化国家石油需求不会显著下降
考虑到significantly,还是B好一些

作者: Aaron_Qian    时间: 2024-2-17 23:28
B(E)A(B)A(C)CC(B)
P1:  北美昆虫总数仅2%的外来昆虫却占据了40%的主要害虫;
P2: 欧洲森林昆虫在北美的入侵成功率的差异可能归因于这些地区之间的重大历史、地质和气候差异;

Q1: 主旨题:选E;更多地探讨了侵入成功的因素,非管理策略
Q2: 外来害虫的比例,而不是所有昆虫的比例;B
Q3: C更直接,B更推理错;
Q4: 环境的影响的重要性大于气候,选C
Q5: C错在过度推导,B更直接
作者: WayneDD    时间: 2024-2-18 11:24
D64
CR A B
前提:Pasta是饮食一部分,低卡路里Pasta流行后
结论:人口减重

前提:oil需求增加,但供给只能满足工业国家需求
结论:oil短缺

RC
外来害虫对生态影响,需要改变管理策略
外来害虫的爆发因素,历史和生态因素



作者: Josephkiki    时间: 2024-2-18 20:20
Day64
CR
1.假设题
P:pasta 是staple
C:减少average weight by 减少overall 卡路里 intake
存在样本偏差,单个pasta卡路里intake减少不等于总卡路里减少
A:弥补了gap,有效加强 √
B:无关
C:和taste无关,主要是说卡路里的gap
D:与price无关
E:与pasta本身有关,与其他食物无关

2. 假设题
P:production刚够,但demand预估上升很多
C:oil短缺是不可避免的
存在草率结论,production真的不会上升很多吗
A:与其他能源无关
B:decrease与短缺无关
C:production 确实无法上涨,弥补了gap √
D:和usage无关
E:无关干扰
作者: baruru66    时间: 2024-2-18 22:00
day64
CR 选不出来
⒈如果新低卡披萨变得流行➡️大家平均体重会下降
A 当地居民不会增加整体食量来补充新披萨的低卡路里 OK
B 没有别的低卡披萨。无关
C 不会因为口味偏好而不选新披萨 OK
D 新低卡披萨和传统披萨价格差不多,大部分人都能买起 OK
E 习惯吃披萨的居民不会在吃新低卡披萨的同时吃额外的高卡路里食物。同A OK
我觉得ACDE都可以

⒉新兴国家因工业快速发展,对原油的需求增长,但当前全球的原油生产只满足了工业国家的需求,且原油生产增长缓慢,所以全球原油供应短缺是不可避免的。
A 新兴国家不会找原油的替代能源 OK
B 工业国家的原油消耗不会大幅减少 OK
C 工业国家的原油生产率不会增长得超过预期水平 OK
D 没有重大技术进步能增加原油使用的有效性 OK
E 当前全球原油生产已经是能够可持续生产的最大量了 OK
我分不出优次

RC CABBD
①外来昆虫对当地生态造成破环,需要立即重新评估管理策略来减轻它们的不利影响。
②探讨入侵成功的关键因素
作者: Rosie2022    时间: 2024-2-19 00:50
day 64
1. CR
(1) A, ✅
assumption - claim
- Reasoning:
    - premise: pasta is staple
    - when popular - new pasta can lose weight, as caloric intake decrease
A. ok, not compensate for caloric
E. OK, 不如A直接
(2) B ✅
assumption
- Reasoning:
    - economy emerge, demand for crude oil rise.
    - production of crude increase a little
    - cause a shortage
作者: ZoeZoooo    时间: 2024-2-19 00:52
🔴RC
第一段:
北美成了一些虫和植物的栖息地,这些外来者对内地生态系统构成威胁。+各种例子
第二段:
虽然侵略……(负面评价),但是他又有好处……(举例+正面评价)但这个好处有可能有他因。                                                                                                      

EBCCB

作者: DonkeyG    时间: 2024-2-19 09:59
CR
1.     A
2.     D (B 不太理解这种题该怎么选,题干说了demand会显著增加,B重复了一遍在未来用油量不会降低,所以B相当于重复了一遍题干…为啥这算assumption了?不是原文提到过了吗)
RC
C(E) B D(C) B(C) C(B)

作者: 风轻轻    时间: 2024-2-19 13:36
同意!               
作者: Blair1001    时间: 2024-2-21 16:47
同意!               
作者: Blair1001    时间: 2024-2-21 17:29
Cr
制造低卡路里的披萨能够减少人们的平均重量,因为他减少了人们的总卡路里摄入。
假设题 a
工业发展迅速导致石油需求上升。然而,但是现在供求平衡,供给只会上升一点。结论,石油短缺不可避免。假设题 b

RC
北美成为昆虫和植物的新居住地。主要是农业和森林害虫。需要寻找减少这种生态环境影响的策略。
大量研究都在分析入侵成功的环境和生态影响,但是没有统一的入侵理论。植物主和害虫至今的关系。然而,欧洲森林害虫入侵成功归因于历史、地理和环境的变动。
主旨题 d 只是提到了几句话(答案e)
细节题 a 问的是害虫不是所有昆虫(答案b 原文exotic insects, which constitute a mere 2% of North America's insect population, represent 40% of its major pests)
目的题 c
推理题 d(答案cThis paper posits that the deep-rooted ecological and faunal parallels between North America and Europe facilitate the exchange of herbivores between these continents)
细节题 b

DI
D(答案2048?)
A
B
C(答案b?)


词汇
Staple n  主要产品
Weedy a 杂草丛生的
Propensity n 习性
Heuristic a 启发式的
Caravan n 商队牌汽车
Delve v 探究,钻研
Tapestry n 挂毯
Algorithm n 运算法则
Exponential a 指数的
作者: 有机盐    时间: 2024-2-22 08:59
Mark一下!               
作者: fangjue987a    时间: 2024-2-22 22:52
RC
Part1- this paragraph talks about imported insects and plants, and they are becoming pests among the ecosystem. These species have adverse effects on environment and need actions
Part2- talks about the success of plants and insects invasion. There is no concrete conclusion about success of invasion, meanwhile, a study shows some success rates can be attributed to history, geo, and climate.

Q1-E
Q2- B
Q3- B
Q4- B
Q5-B

DI

Q1-  A = 2^11
Q2- A = 125000*5
Q3- B
Q4- D


CR

Facts:a new low-calorie pasta will replace the old pasta, reduce overall calorie intake
P:?
C:overall population will lose weight
Q:what is presumption?
Q1- A


Facts:emerging countries will demand for more oil, current oil production only meets industrialized countries and oil production will not increase significantly
P:?
C:oil production will not meet future demand
Q:what is presumption?

Q2- A

作者: leiyaqing1992    时间: 2024-2-23 15:44
看一下!               
作者: leiyaqing1992    时间: 2024-2-23 15:48
如图
作者: tdcq1993    时间: 2024-2-25 14:59
RC
第1段:K和M和S的研究表明最近半个世纪美国成了2000种昆虫和植被新的栖息地。K和M的研究表明这些外来昆虫只占总数量的2%,但害虫数量却占了总害虫数量的40%,严重不成比例。H和M的研究表明外来sawflies的暴发会比本土物种更频发。C和S和L强调外来物种的管理策略需要重新评估。
第2段:D和L做了很多关于气候和生态对外来物种影响的研究,但是始终没有定论。G和W的研究表明北美和欧洲的生态和植被有很大的相似性,所以外来物种侵入成功。但是侵入非双向的原因和其他因素有关。
C、B、C、B、B

CR
在一个意面是主食的地区,一个厂商正推出低卡的意面
这个厂商声称,如果这款意面盛行,可以帮助大家减重。
问assumption
A:吃低卡意面的人不会吃更多
CD:题干已经假设“if popular”

基于新兴经济体快速的工业发展,对原油的需求将大幅上升
但是,当前全球原油的产量仅能刚好满足工业化国家的需求,并且在未来几年仅会小量增长
所以,未来石油供应紧缺不可避免。
问assumption
B:工业化国家的石油需求不会大幅下降
AD:题干已经假设“emerging economies … demand … rise significantly”


作者: setmefree1    时间: 2024-2-25 22:34
DAY64
RC
- 过去五年,北美成为约2000昆虫和同等数量杂草植物的新栖息地,很大一部分转化为农业和林业害虫,对生态系统造成威胁
- 统一的入侵生态学理论难以捉摸。北美生物植物的相似促进大陆间食草动物的交换。欧洲归因于历史、地质、气候差异

作者: 时间哪    时间: 2024-2-26 09:04
Rc: cbce?d
作者: 薯片家的    时间: 2024-3-23 12:55
CR: A A
RC: E B C B B
P1-近500年,北美成了2千种害虫和杂草的栖息地,大部分是对农业和森林的害虫,对生态环境有威胁。发现外部害虫虽然只有2%但却占害虫的40%,需要采取措施
P2-研究发现食草动物的交换可能是原因,但是更大可能归因于历史 地理和天气使然




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