GRE閱讀文章結構分析 (GRE Passage Structure)

Section 1：GRE RC Passage Types

海洋酸化那篇到了第三段，有研究者提出生物可能適應的看法，後面卻用 However 指出變化速度太快。如果只把這段記成「生物能適應」，就會讀反作者的回應。GRE 閱讀理解（Reading Comprehension，簡稱 RC）需要分清楚每段在做什麼，也要分清楚那是誰的話。

1.1 Argument Passage（論證型）

作者提出主張，再用證據支持。讀到 argue 或 claim，先圈出主張的內容，別只記住「這是論證型」。

結構模式：

P1: Claim (主張) →
P2: Evidence 1 (證據一) →
P3: Evidence 2 (證據二) →
P4: Conclusion (結論/強化主張)

識別信號："argue," "claim," "contend," "assert," "maintain"

1.2 Phenomenon Passage（現象解釋型）

文章先描述現象，再找原因或比較可能的解釋。例如後面的安慰劑文章，先交代現象，再討論原有解釋不夠完整的地方。

結構模式：

P1: Phenomenon (現象描述) →
P2: Theory A (解釋A) →
P3: Theory B (解釋B) →
P4: Evaluation (評估哪個更合理)

識別信號："phenomenon," "one explanation," "another theory," "however"

1.3 Book Review / Scholarly Debate（書評/學術辯論型）

文章可能先介紹一本書或某位學者的主張，再呈現其他人的批評。這種文章的人名要特別留意：書的作者、批評者、這篇文章的敘述者，立場未必一樣。

結構模式：

P1: Scholar's argument (學者觀點) →
P2: Evidence/support (支持論據) →
P3: Criticism (批評) →
P4: Author's evaluation (作者的評價)

識別信號："X argues that," "X's work," "critics contend," "while X is correct that..."

1.4 Multiple Viewpoints（多觀點型）

文中有兩種以上的看法，可能互相反對，也可能在末段合併修正。作者未必選邊站，不能看到最後出場的學者就當成作者本人。

結構模式：

P1: Viewpoint A (觀點A) →
P2: Viewpoint B (觀點B) →
P3: Comparison (比較) →
P4: Author's position (作者立場)

識別信號："some scholars believe," "others argue," "traditional view," "revisionist view"

Section 2：Structural Reading Method

2.1 先標出段落功能，再回頭讀細節

結構式閱讀（Structural Reading）就是先記住文章如何展開。以海洋酸化篇為例，可以記成「現象與規模 → 對生物的影響 → 適應的可能與限制」。數字不必第一遍全背下來，但要知道它們放在哪裡、用來說明什麼。

下面的時間是練習節奏的參考，讀不清楚時就放慢。只掃首末句還無法判斷段落關係，就得補讀中間的句子。

心智地圖（mental map）是把主題、段落關係和態度縮成幾筆提示。下面示範格式；實作時按文章真的出現的段落填，沒有解決方案就不要硬補一段：

Topic: 海洋酸化
Structure: 現象 → 原因 → 後果 → 解決方案
Attitude: 擔憂但謹慎樂觀

2.2 段落功能標記法

符號用來幫你回找內容，不是每段只能選一個標籤。海洋酸化第三段同時有他人的反方看法和作者的回應，就需要分別標記。

2.3 作者態度判斷

判斷語氣時，把態度詞連同它修飾的對象一起讀。flawed 是「有缺陷的」，但如果它只出現在某位批評者的話裡，就不能直接當成作者的態度。下面的詞可以幫你辨認評價方向，再回全文確認。

正面的態度詞：

• convincingly, persuasively, admirably, astutely, remarkably

負面的態度詞：

• flawed, questionable, misguided, oversimplified, untenable

中立/混合的態度詞：

• cautiously, qualified, nuanced, tempered, ambivalent

Section 3：Signal Words for Structure Mapping

3.1 Continuation Signals（延續信號詞）

表示文章繼續同一方向：

• moreover, furthermore, additionally, in addition, similarly, likewise, also

這些詞表示延續，仍要看新句子增加了什麼。有時它補的是關鍵證據；若題目問到這個證據，就不能因為方向相同而跳過。

3.2 Contrast Signals（轉折信號詞）

這些詞提醒你前後有轉折或讓步，先確認轉的是哪個觀點：

• however, nevertheless, yet, nonetheless, although, despite, whereas, on the contrary, conversely

轉折處可以放慢，但別把後一句自動認作作者立場。要看主詞是作者、支持者還是 critics，再確認下一句有沒有回應。

3.3 Cause-Effect Signals（因果信號詞）

• because, therefore, thus, consequently, as a result, hence, so

3.4 Emphasis Signals（強調信號詞）

• importantly, significantly, notably, crucially, above all, in fact

強調詞表示作者特別凸顯這個內容，值得標記；是否與題目有關，還要回題幹核對。

3.5 Conclusion Signals（結論信號詞）

• in conclusion, ultimately, therefore, in summary, as a result

Section 4：GRE-Style Passages

GRE Passage 1：Phenomenon：Ocean Acidification

The world's oceans have absorbed approximately 30 percent of the carbon dioxide (CO2) released by human activities since the Industrial Revolution. While this absorption has helped mitigate the effects of climate change on atmospheric temperatures, it has come at a significant cost: the chemistry of the oceans is changing. When CO2 dissolves in seawater, it forms carbonic acid, lowering the water's pH. Since the late 18th century, the average pH of ocean surface waters has decreased by approximately 0.1 units, a change that, because the pH scale is logarithmic, represents roughly a 26 percent increase in acidity.

The consequences of ocean acidification are particularly alarming for organisms that build shells or skeletons from calcium carbonate, including corals, oysters, clams, and certain species of plankton. As acidity increases, the concentration of carbonate ions in the water decreases, making it more difficult for these organisms to construct and maintain their protective structures. Laboratory experiments have shown that under projected acidity levels for the year 2100, some shellfish will be unable to form shells at all.

Some researchers have questioned the severity of these predictions, noting that certain marine organisms have shown a remarkable capacity to adapt to changing conditions. Deep-sea corals, for example, have survived periods of high atmospheric CO2 in the geological past. However, the current rate of acidification is unprecedented in at least 300 million years, and adaptation typically requires many generations, a luxury that many species may not have.

Structural Analysis:

P1: Phenomenon (ocean acidification), description and scale
P2: Consequence, impact on shell-building organisms
P3: Counterargument + Rebuttal, adaptation possible but rate too fast
Author's Attitude: concerned, scientifically cautious

Questions:

1. The primary purpose of the passage is to ___. (A) argue that ocean acidification is the most serious environmental problem (B) describe the phenomenon of ocean acidification and evaluate its potential consequences (C) compare different methods of measuring ocean acidity (D) challenge the theory that CO2 affects ocean chemistry

2. The author mentions "a 26 percent increase in acidity" primarily in order to ___. (A) illustrate that a seemingly small pH change represents a significant chemical shift (B) show that the pH scale is easy to understand (C) prove that scientists have been measuring acidity correctly (D) suggest that 26 percent is an acceptable level of change

3. The author's response to researchers who question the severity of ocean acidification is that ___. (A) their research is methodologically flawed (B) past episodes of high CO2 were less severe than the current one (C) the current rate of change may be too rapid for adaptation (D) deep-sea corals are not relevant to the discussion

GRE Passage 2：Multiple Viewpoints：Nature vs. Nurture

The debate over whether intelligence is determined primarily by genetics (nature) or by environment (nurture) has persisted for over a century. In the early 20th century, the nature perspective dominated, fueled by the eugenics movement and studies of identical twins raised apart. These studies appeared to show that twins raised in different environments still exhibited remarkably similar cognitive abilities, suggesting a strong genetic basis for intelligence.

In the 1960s and 1970s, the nurture perspective gained prominence. Psychologists such as Richard Lewontin argued that environmental factors, including nutrition, education, and socioeconomic status, played a far larger role than genetics in determining cognitive outcomes. Lewontin pointed out that most twin studies involved twins raised in relatively similar environments, even when separated, because adoption agencies typically placed children in families of comparable socioeconomic backgrounds. This placement bias, he contended, inflated the apparent influence of genetics.

Modern researchers have largely moved beyond the nature-versus-nurture dichotomy, recognizing that intelligence arises from a complex interaction between genetic predispositions and environmental influences. Studies now suggest that heritability of intelligence increases with age, a counterintuitive finding known as the "Wilson Effect." One explanation is that as people grow older, they increasingly select environments that match their genetic predispositions, amplifying the apparent role of genes.

Structural Analysis:

P1: Viewpoint A (nature), early 20th century, twin studies
P2: Viewpoint B (nurture), 1960s-70s, Lewontin's criticism
P3: Synthesis (interaction), modern view, Wilson Effect
Author's Attitude: objective, synthesizing

Questions:

1. The passage suggests that Lewontin would agree with which of the following? (A) Twin studies provide strong evidence for genetic determinism. (B) Adoption agencies in the mid-20th century were well-managed. (C) Twin studies overestimated the role of genetics due to placement bias. (D) Identical twins always have identical intelligence.

2. The "Wilson Effect" described in the passage refers to the finding that ___. (A) environmental factors become less important over time (B) the heritability of intelligence increases with age (C) twins raised apart are always different (D) genetic factors are irrelevant to intelligence

3. The passage is organized by ___. (A) presenting two opposing views and then a synthesis (B) describing a single experiment in detail (C) arguing strongly for the nature position (D) listing statistical data chronologically

GRE Passage 3：Book Review：Rewriting History

In her controversial book The Myth of the Andalusian Paradise (2016), historian Darío Fernández-Morera challenges the widely held belief that medieval Muslim-ruled Spain (al-Andalus) was a model of interfaith harmony and cultural flourishing. According to the conventional narrative, Muslims, Christians, and Jews coexisted peacefully in al-Andalus, producing remarkable advances in science, philosophy, and the arts. Fernández-Morera argues that this narrative is largely a romanticized fiction.

Drawing on primary sources in Arabic, Latin, and Spanish, Fernández-Morera contends that life for non-Muslims in al-Andalus was characterized by systematic discrimination, periodic violence, and the constant threat of persecution. She points to historical records showing that Christians and Jews were required to pay special taxes, were prohibited from building new places of worship, and were subject to sumptuary laws that restricted their clothing and public behavior.

Several scholars have criticized Fernández-Morera's work for what they see as an overly negative portrayal that replaces one simplified narrative with another. Historian Brian Catlos, while acknowledging the value of Fernández-Morera's archival research, argues that her account understates the genuine moments of cultural exchange and cooperation that did occur. The reality, Catlos suggests, was neither a paradise nor a nightmare but a complex society in which tolerance and intolerance coexisted uneasily.

Structural Analysis:

P1: Book's thesis, challenges conventional narrative
P2: Book's evidence, discrimination records
P3: Criticism, oversimplification in the other direction
Author's Attitude: balanced, presenting the debate without taking sides

Questions:

1. The primary purpose of the passage is to ___. (A) praise Fernández-Morera's groundbreaking research (B) describe a scholarly debate about the nature of medieval Spain (C) prove that al-Andalus was a violent society (D) compare Muslim and Christian civilizations

2. According to the passage, Catlos's main criticism of Fernández-Morera is that ___. (A) her archival research is unreliable (B) she cannot read Arabic sources (C) her account replaces one oversimplification with another (D) she focuses too much on cultural achievements

3. The author of the passage would most likely characterize the conventional narrative about al-Andalus as ___. (A) completely accurate (B) entirely false (C) an oversimplification that contains some truth (D) irrelevant to modern scholarship

GRE Passage 4：Argument：Universal Basic Income

The concept of Universal Basic Income (UBI), a regular, unconditional cash payment to every citizen, has gained significant traction in recent years. Proponents argue that UBI would eliminate poverty, reduce bureaucracy, and provide workers with greater bargaining power in the labor market. A landmark experiment in Finland from 2017 to 2018, in which 2,000 unemployed citizens received a basic monthly payment, appeared to support these claims: recipients reported improved well-being, reduced stress, and slightly higher employment rates compared to the control group.

Critics, however, raise several objections. First, they question whether UBI is financially sustainable at a national scale. Providing every American adult with $12,000 per year, for example, would cost approximately $3 trillion annually, roughly 75 percent of current federal revenue. Second, they argue that UBI could discourage work, particularly among low-wage workers who might choose to live on the basic income rather than accept undesirable jobs. Third, critics contend that UBI, by distributing money universally rather than targeting those most in need, is an inefficient use of limited resources.

The debate is further complicated by the question of whether UBI should replace or supplement existing welfare programs. Some advocates propose UBI as a complete substitute for all other social benefits, arguing that the simplicity of a single universal payment would reduce administrative costs and eliminate the stigma associated with means-tested programs. Others worry that eliminating targeted programs could leave vulnerable populations, such as the disabled or those with high medical costs, worse off than before.

Structural Analysis:

P1: Argument for UBI, with Finland evidence
P2: Arguments against, cost, work disincentive, inefficiency
P3: Additional complexity, replace vs. supplement existing programs
Author's Attitude: neutral, presenting balanced analysis

Questions:

1. According to the passage, the Finland experiment showed that UBI recipients ___. (A) stopped looking for work entirely (B) experienced improved well-being and slightly higher employment (C) spent all the money on unnecessary items (D) were no different from the control group

2. The author mentions the cost of "$3 trillion annually" primarily to ___. (A) suggest that UBI is affordable (B) illustrate the financial challenge of implementing UBI nationally (C) argue for higher taxes (D) compare the U.S. economy to Finland's

3. It can be inferred that the author views the UBI debate as ___. (A) settled in favor of UBI (B) settled against UBI (C) complex and unresolved, with valid arguments on both sides (D) irrelevant to modern policy

GRE Passage 5：Phenomenon：The Placebo Effect

The placebo effect, the phenomenon in which patients experience real improvements after receiving an inert treatment, has long fascinated and frustrated medical researchers. In clinical trials, placebos are used as a baseline to measure the effectiveness of new drugs. Yet the placebo effect itself is surprisingly powerful: studies have shown that placebos can alleviate pain, reduce symptoms of depression, and even affect measurable physiological indicators such as blood pressure and heart rate.

Traditionally, the placebo effect was attributed to patients' beliefs and expectations. If a patient believed that a pill would help, the theory went, the brain would initiate healing responses that produced genuine relief. However, recent research has revealed a more complex picture. In a striking 2010 study, researcher Ted Kaptchuk found that patients with irritable bowel syndrome experienced significant improvement even when they were explicitly told that they were receiving a placebo. This "open-label placebo" effect suggests that the therapeutic benefits of placebos cannot be explained entirely by patient belief.

Several mechanisms have been proposed to account for the placebo effect. Classical conditioning may play a role: patients who have previously experienced relief from medication may unconsciously associate the act of taking a pill with healing, triggering the same physiological responses even when the pill is inert. The patient-practitioner relationship also appears to be important: patients who feel cared for and listened to tend to show stronger placebo responses, suggesting that the social and emotional context of treatment matters as much as the treatment itself.

Structural Analysis:

P1: Phenomenon, description of the placebo effect
P2: Challenge to traditional theory, open-label placebo study
P3: Proposed mechanisms, conditioning and patient-practitioner relationship
Author's Attitude: intellectually engaged, presenting evolving understanding

Questions:

1. The passage suggests that the traditional explanation for the placebo effect is ___. (A) completely wrong (B) sufficient to explain all placebo responses (C) incomplete and needing revision (D) unrelated to modern medicine

2. The Kaptchuk study is significant because it shows that ___. (A) placebos never work (B) patients must be deceived for placebos to work (C) placebos can work even when patients know they are receiving them (D) irritable bowel syndrome cannot be treated

3. According to the passage, which of the following may contribute to the placebo effect? (A) The color of the pills (B) Classical conditioning and the patient-practitioner relationship (C) The cost of the medication (D) The patient's knowledge of pharmacology

Answer Key

GRE Passage 1: Ocean Acidification

1. (B)：第一段說明酸化現象，第二段談對造殼生物的影響，第三段討論適應是否來得及。(B) 包含描述與評估，(A) 的「最嚴重」則是原文沒有比較過的。
2. (A)：作者把 pH 下降 0.1 和酸度增加 26% 放在一起，是要解釋小幅的 pH 數字變化並不等於化學影響很小。pH 採對數尺度，不能把兩種數字當成同一把尺。
3. (C)："the current rate of acidification is unprecedented" and "adaptation typically requires many generations, a luxury that many species may not have."

GRE Passage 2: Nature vs. Nurture

1. (C)：第二段說收養家庭的社經背景相近，因此雙胞胎分開成長，也未必代表環境差很多。placement bias（安置偏誤）在這裡就是指這個比較上的限制；文中的 Lewontin 認為它會讓基因的影響看起來更大。
2. (B)："heritability of intelligence increases with age" is the Wilson Effect.
3. (A)：前兩段分別呈現基因和環境的看法，第三段把兩者接起來，討論它們如何互相作用。這個綜合觀點，對應選項裡的 synthesis。

GRE Passage 3: Rewriting History

1. (B)：前兩段介紹書中的主張與材料，第三段換成其他學者的批評。全文在呈現這場爭論，不能把書作者的主張直接當成這篇文章要證明的結論。
2. (C)："her account replaces one oversimplification with another" (paraphrased)。
3. (C)：第三段的批評是：把社會描寫得全然負面，也會漏掉曾有的文化交流。因此傳統敘事包含部分事實，但把情況說得太單純；不宜選 entirely false。

GRE Passage 4: Universal Basic Income

1. (B)："recipients reported improved well-being, reduced stress, and slightly higher employment rates."
2. (B)：這筆金額放在 critics 質疑財政可行性的段落，用來顯示全國推行的負擔。題目問它的作用，不是要你計算 UBI 的成效。
3. (C)：末段又提出取代或補充福利制度的分歧，表示討論還沒有解決。作者同時呈現支持理由、成本疑慮和制度選擇，不能讀成某一方已獲勝。

GRE Passage 5: The Placebo Effect

1. (C)：傳統說法把效果歸於病人的信念，但第二段又介紹知情使用安慰劑仍改善的例子。作者因此說信念無法解釋全部情況；「不完整」不等於「完全錯誤」。
2. (C)：文中的研究對象明知拿到安慰劑，症狀仍有改善，對應 (C)。重點是 knows they are receiving them 這個條件，不能把這個例子擴大成所有病症都適用。
3. (B)："Classical conditioning" and "patient-practitioner relationship" are the two mechanisms mentioned.

做完後，先遮住每篇附的 Structural Analysis，自己標一遍段落功能。若標得不同，回到連接詞和說話者去查，不必急著把自己的筆記全改成範例。

可以從書評那篇開始：把 Fernández-Morera 和 Catlos 的主張分開，再問作者是在介紹、批評，還是替某一方背書。接著用第 1 題的選項核對，看看你有沒有把「文中有人說」誤認成「作者要證明」。