科学的首要目标是否应是改善人类生活

The response addresses the task with a clear position of agreement and relevant, supported main ideas, though development is uneven and the second example is muddled and repetitive.

Progression is broadly clear with basic linking devices, but cohesion is partly mechanical and the repeated, incoherent sentence in the third paragraph disrupts the flow.

Vocabulary is adequate for the topic with some appropriate collocations, but there are noticeable word-choice errors such as 'science safe many lives' and imprecise phrasing.

A mix of simple and complex sentence forms is used, yet frequent grammar errors in tense, agreement, and structure reduce accuracy without fully blocking meaning.

The position is clear and relevant with some supporting examples, but the response is under length, lacks an introductory framing of the question, and the final ethical caveat is raised but not developed.

Paragraphing is logical and ideas progress cohesively with appropriate linking devices, though the abrupt opening without an introduction slightly weakens overall progression.

Vocabulary is flexible and precise, with natural collocations such as eradicated once-deadly diseases and harness responsibly, showing good awareness of style.

A wide range of complex structures is used accurately, including relative clauses and concessive constructions, with only rare minor slips that do not impede communication.

The response addresses the question directly, states a clear position, and supports it with relevantly developed ideas and examples, though some points remain somewhat general.

Ideas are logically organised with clear paragraphing and cohesive devices used appropriately, although referencing and transitions are occasionally mechanical.

Vocabulary is flexible and mostly precise, including phrases like 'resource depletion' and 'alleviating human suffering', with occasional awkward collocations such as 'immense possibility towards contributions'.

A range of complex structures is used with generally good control, and errors such as the comma splice 'It, should' and minor article or punctuation slips are occasional and non-impeding.

The position is clear and main ideas are developed with relevant examples, but the response is 29 words short of the minimum and the conclusion raises environmental conservation that is never developed, leaving coverage uneven.

Ideas progress logically across cohesive paragraphs with appropriate linking devices and a clear overall structure.

Vocabulary is flexible and precise, using natural collocations such as extended life expectancy and scientific innovation, with only minimal inaccuracy.

A wide range of sentence structures is used with generally good control, including complex forms and effective subordination, with only occasional minor slips.

The response addresses the question directly with a clear 'largely agree' position, well-developed main ideas, and relevant supporting examples, though the treatment remains somewhat one-sided and conventional.

Ideas progress logically across clear paragraphs with a range of cohesive devices and referencing used naturally, with only occasional slightly mechanical transitions.

Vocabulary is flexible and natural, with good awareness of style and collocation such as 'reduce human suffering' and 'altruistic purposes', with only minor imprecision.

A variety of complex structures, including concessive clauses and relative constructions, is used with good control and frequent error-free sentences, with only rare minor slips.

The position is clear and consistently maintained, with relevantly developed main ideas and concrete supporting examples, though the argument is somewhat one-sided and leans on assertion rather than deeper analysis.

Ideas progress logically across well-managed paragraphs with effective cohesive devices, although some linking and framing language is mechanical and formulaic.

Vocabulary is wide and often precise (e.g., 'watershed moment', 'bolstered food production'), though frequent rhetorical inflation produces occasional unnaturalness and reduces precision.

A wide range of complex structures is used with generally strong flexibility and control, with only rare, non-impeding slips in wording and construction.

The position is clear and consistently maintained, with relevant main ideas supported by examples, though development is somewhat general and the response is slightly under length.

Ideas are logically organised in clear paragraphs with a range of cohesive devices used naturally, although progression within paragraphs is occasionally list-like rather than fully extended.

Vocabulary is sufficiently flexible and precise for the topic, with good awareness of style and collocation, and only rare, minor lapses in word choice.

A variety of complex structures is used with generally good control, and most sentences are error-free, with only occasional minor grammatical slips.

The position is clear throughout, main ideas are developed with relevant examples, and the conclusion matches the stance, though the ethical-dilemma point is less directly tied to the question of science's primary aim.

Paragraphing is logical with a clear progression and varied cohesive devices, although transitions such as 'Moreover' connect the ethics point somewhat loosely to the preceding argument.

Vocabulary is flexible and largely precise, with strong collocations like 'curiosity-driven research' and 'immediate application', alongside occasional less exact phrasing such as 'restricted to human welfare'.

A wide range of complex structures, including conditionals and relative clauses, is used with good control; errors are minor and do not impede meaning, but full flexibility is not consistently demonstrated.

The response fully addresses the question with a clear, consistent position that both aims are complementary, and ideas are well developed and supported with relevant examples.

Ideas are logically sequenced across clear paragraphs with a wide range of cohesive devices used naturally, though linking is at times slightly mechanical.

Vocabulary is flexible and precise, with effective use of less common academic items such as 'garner public trust', 'intrinsic quest', and 'underpinning themes of inquiry' conveyed through natural collocation.

A wide range of complex structures, including concession clauses and relative constructions, is used with flexibility and generally strong accuracy, with only minor slips.