TOEFL Academic Vocabulary in Context — Questions and Answers
Question 1: In the sentence "The scientist's hypothesis was subsequently corroborated by three independent studies," the word "corroborated" most nearly means:
- disproven
- confirmed (Correct answer)
- challenged
- ignored
Correct answer: confirmed
"Corroborated" means confirmed or supported by evidence. The context — independent studies backing a hypothesis — makes "confirmed" the correct choice. "Disproven" and "challenged" are opposites of what the sentence implies.
Question 2: Read the passage: "Despite the ostensibly simple design of the experiment, the underlying mechanisms proved remarkably complex." What does "ostensibly" mean?
- apparently (Correct answer)
- genuinely
- experimentally
- theoretically
Correct answer: apparently
"Ostensibly" means apparently or seemingly — something that appears to be true on the surface but may not be. The contrast with "proved remarkably complex" signals that the simplicity was only superficial.
Question 3: Which sentence uses the word "proliferate" correctly in an academic context?
- Researchers proliferated their findings at the annual conference.
- The number of online learning platforms has proliferated rapidly in recent years. (Correct answer)
- The professor proliferated the exam to make it easier for students.
- Scientists must proliferate all data before publication.
Correct answer: The number of online learning platforms has proliferated rapidly in recent years.
"Proliferate" means to increase rapidly in number or spread widely. The second sentence correctly uses it to describe the rapid growth of online platforms. The other sentences use the word incorrectly — it cannot mean "present," "simplify," or "verify."
Question 4: In academic writing, the word "albeit" is used to:
- introduce a main argument
- provide a counterexample to refute a claim
- introduce a concession or qualification (Correct answer)
- signal a cause-and-effect relationship
Correct answer: introduce a concession or qualification
"Albeit" means "although" or "even though" and is used to introduce a qualification or concession. For example: "The results were promising, albeit inconclusive." It acknowledges a limiting factor without negating the main point.
Question 5: The passage states: "The delegation reached a consensus on the primary objectives, though several ancillary issues remained unresolved." The word "ancillary" most nearly means:
- primary
- secondary (Correct answer)
- controversial
- financial
Correct answer: secondary
"Ancillary" means supplementary or secondary in importance. The contrast with "primary objectives" already resolved confirms that ancillary issues are lesser or supporting ones. It comes from the Latin for "helper."
Question 6: Choose the sentence in which "mitigate" is used correctly:
- The new policy will mitigate the problem entirely.
- Researchers mitigated a new theory about climate change.
- The medicine was designed to mitigate the severity of symptoms. (Correct answer)
- Students should mitigate their essays before submission.
Correct answer: The medicine was designed to mitigate the severity of symptoms.
"Mitigate" means to lessen the severity, seriousness, or painfulness of something. Sentence C correctly uses it to describe reducing the severity of symptoms. "Mitigate entirely" (A) is contradictory, and the other options misuse the word entirely.
TOEFL Academic Vocabulary in Context
In the sentence "The scientist's hypothesis was subsequently corroborated by three independent studies," the word "corroborated" most nearly means: