gre题目解析

P1791，According to the passage, which of the following statements is true of bacteria that engage inphotosynthesis?（细节题）(A) They eventually become two autonomous cells.（无）(B) They cannot normally also engage in nitrogen fixation.（4行“unusually”取反）(C) Oxygen normally inactivates them.（氮气）(D) Cellular products are constantly transferred between suchbacteria.（只有鱼腥藻）(E) They normally lack chlorophyll.2. It can be inferred from the passage that celldifferentiation within Anabaena is regulated by the （细节）(A) amount of oxygen Anabaena cells produce(B) season of the year(C) amount of fixed nitrogen compounds available（文中只有在L7-L9 中提到差别，就是含氮量的不同）(D) number of microscopic channels uniting Anabaena cells(E) amount of chlorophyll in Anabaena cells. The passage supports which of the following inferences about heterocysts? （细节题）(A) Heterocysts do not produce oxygen.（9行）(B) Nitrogen gas inactivates heterocysts.(C) Chlorophyll increases the productivity of heterocysts.(D) Heterocysts allow nitrogen fixation and photosynthesis tooccur in the same cell.(E) Heterocysts are more important for Anabaena’s functioningthan are photosynthetic cells.4. The author uses the example of Anabaena to illustratethe(A选项很具迷惑性，但A肯定不对。

因为Amongphotosynthetic bacteria, Anabaena is unusual。

Unusual 是指Among photosynthetic bacteria。

而非amongunicellular organisms) in order to 题，文章中的例子就是为了反驳，“than“之后的老观点(A) uniqueness of bacteria among unicellular organisms(B) inadequacy of an existing view of bacteria(C) ability of unicellular organisms to engage in photosynthesis(D) variability of a freshwater bacteria(E) difficulty of investigating even the simplest unicellularorganisms12. The passage mentions all of the following as difficulties that self-employed women may encounter EXCEPT:(A) discrimination from suppliers(B) discrimination from consumers(C) discrimination from financial institutions(D) problems in obtaining good employees(E) problems in obtaining government assistance13. The author would be most likely to agree with which of the following conclusions about discrimination against women by private employers and by government employers?(A) Both private employers and government employers discriminate, with equal effects on women’s earnings.(B) Both private employers and government employers discriminate, but the discrimination by private employers has a greater effect on women’s earnings.（原答案有误，36行“IF “表虚拟）(C) Both private employers and government employers discriminate, but the discrimination by government employers has a greater effect on women’s earnings.(D)Private employers discriminate; it is possible that government 28-30行出现过iminate.(E) Private employers discriminate; government employers do not discriminate.14. A study of the practices of financial institutions that revealed no discrimination against self-employed women would tend to contradict which of the following?（细节题）(A) Some tentative results of Fuchs’s study(B) Some explicit results of Brown’s study(C) A suggestion made by the author（24行，suggest ,表示作者自己的观点）(D) Fuchs’s hypothesis(E) Sanborn’s hypothesis.15 According to Brown’s study, women’s earnings categories occur in which or the following orders, from highest earnings to lowest earnings?(细节题)(A) Government employment, self-employment, private employment(B)Government employment, private employment, self-employment(C) Private employment, self-employment, government employmentself-employment(E) Self-employment, private employment, government employment16 The passage explicitly answers which of the following questions?（细节）(A) Why were Black workers excluded from the sample used in Brown’s study?（20行，括号内容为重点）(B) Why do private employers illuminate more against women than do government employers?(C) Why do self-employed women have more difficulty than men in hiring high-quality employees?(D) Why do suppliers discriminate against self-employed women?(E) Are Black women and Black men treated similarly by employers and consumers?17. It can be inferred from the passage that the statements in the last paragraph are most probably which of the following?（细节题）(A) Brown’s elaboration of his research results(B) Brown’s tentative inference from his data(C) Brown’s conclusions, based on common-sense reasoningThe author’s conclusions, based on Fuchs’s and Brown’s results（同14题）(E) The author’s criticisms of Fuchs’s argument, based onBrown’s results18. Which of the following titles best describes the content of thepassage as a whole?（主旨题）(A) The Necessity for Earnings Differentials in a Free MarketEconomy(B) Why Discrimination Against Employed Women byGovernment Employers and Private Employers Differs from Discrimination Against Self-Employed Women by Consumers(C) How Discrimination Affects Women’s Choice of Type ofEmployment(D) The Relative Effect of Private Employer Discrimination onMen’s Earnings as Compared to Women’s Earnings(E)The Relative Effect of Discrimination by GovernmentEmployers, Private Employers, and Consumers on Women’s EarningsP1678. The passage is primarily concerned with doing which of（主旨题）(A) Reviewing a historical study of the status of women in MexicoCity during the nineteenth century(B) Analyzing the effects of economic instability on the status ofwomen in Mexico during the nineteenth century(C) Advancing a thesis explaining wh y women’s status in MexicoCity improved during the nineteenth century(D) Rejecting the thesis that the status of women in Mexico Cityduring the nineteenth century actually improved(E) Praising an author for a pioneering attempt to bridgesignificant gaps in Mexico’s economic history prior to 17909. According to the author of the passage, Arrom’s studycan be characterized as “an important addition to LatinAmerican women’s history” (lines 14) because it（细节题）(A) offers a radical thesis concerning the status of women’s civilrights in Mexican society during the nineteenth century(B) relies on a new method of historical analysis that has notpreviously been applied to Latin American history(C) focuses only on the status of women in Mexican society(D) addresses a period in Mexican history that scholars have tosome extent (to some extent: 某种程度上, (多少)有一点) neglectedgovernment in encouraging women’s education10. It can be inferred from the passage that Arrom wouldagree with which of the following assertions?（细节题）(A) Efforts by the Mexican government to encourage educationfor women during the nineteenth century were hampered by the economic instability of that period.(B) The most significant advances in the rights of Mexican womenduring the nineteenth century occurred prior to 1857.(C) Improvements in the status of women in Mexico City duringthe nineteenth century were accompanied by similar improvements in the status of women in other large Latin American cities.（无）(D) Scholars have in the past accorded the most significance tonineteenth-century Mexican literature that supported the status quo in women’s political and marital rights.(E)Scholars have in the past underestimated the number ofhouseholds headed by females in Mexico City.（3-4行）11. Which of the following best describes the author’sattitude toward Arrom’s work?(A) Uncritical approval（有保留的热情，对应2段让步）(C) Praise for her thesis, despite skepticism regarding the sourcesof her evidence(D) Reluctant acceptance, despite lingering doubts regarding theaccuracy of her thesis。