GMAT OG 2021上新了,作为GMAT考生的备考圣经,GMAT新题必做噢,广州申友GMAT老师Cheryl带你刷题, GMAT OG 2021 CR新题逐题解析,欢迎讨论交流。Cheryl老师建议点评GMATOG官方资料:OG最基础且全面,它包含了逻辑部分的考察方向及一百多道题目和解析,覆盖各种题型和推理方式。OG题目含金量高,考生可以通过深入分析题目的逻辑链和选项解析来感受出题思路,充分理解其思维方式。难度适中、解析详尽、覆盖全面,使它成为逻辑最好的入门资料。
728 Professor: A marine biologist argues that transmission of sea lice from farm salmon to wild salmon is unlikely in the Broughton Archipelago, British Columbia, citing numerous studies suggesting that salinities less than 30 parts per thousand are unfavorable to sea-lice survival. The biologist concludes that the archipelago's 25-30 parts per thousand salinity range between March and June, the critical period for wild salmon migration, tends to suppress sea-lice proliferation. But a review of the literature shows that salinities of 25-30 parts per thousand in combination with British Columbia's cool spring temperatures favor the flourishing of sea lice.
In this passage, the professor attempts to undermine the biologist's argument by
(A) pointing out that a condition claimed to be necessary for sea-lice survival is not sufficient for it
(B) citing studies that suggest that salinity levels were not measured reliably
(C) claiming that there is evidence showing that one of its premises is false
(D) questioning the reliability of the biologist's scientific sources
(E) showing that its conclusion is inconsistent with its premises
广州申友GMAT老师Cheryl带你分析
CR题型:weaken&conclusion
逻辑链:条件推理
sea-lice---cool spring temperature
|
Salinities
|
Wild salmon migration
选项分析:
A. 指出sea-lice需要的条件不止是说的条件,没说需要的,说的是无法让它生存的
B. 测量方式有误,没说到测量方式
C. 证据表明条件有误,正确,即关于salinities的条件有误
D. 质疑来源可靠性,没说到来源
E. 结论条件不符,没说
答案:C
难度:650-680
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