GRE阅读长难句练习4

　　句子1

　　Unless they succeed, the yield gains of the Green Revolution will be largely lost even if the genes in legumes that equip those plants to enter into a symbiosis with nitrogen fixers are identified and isolated, and even if the transfer of those gene complexes, once they are found, becomes possible.

　　主干(主+谓+宾): the yield gains will be largely lost

　　翻译: 除非他们能取得成功, 不然的话, 绿色革命的产量收益将在很大程度上损失殆尽, 即使豆科植物中使这些植物有条件进入到与固氮细菌共生关系的基因可被辨识出来和分离开来的话, 且即使这些基因综合体(gene complex), 一旦被发现之后, 其移植得以成为可能的话。

　　1.becomes的逻辑主语是: ：

　　A. Green Revolution

　　B. The symbiosis

　　C. The transfer

　　答案：C

　　2.are的逻辑主语是: ：

　　A. Fixers

　　B. The genes

　　C. Yield gains

　　答案：B

　　句子2

　　They were fighting , albeit discreetly, to open the intellectual world to the new science and to liberate intellectual life from ecclesiastical philosophy and envisioned their work as contributing to the growth, not of philosophy , but of research in mathematics and physics.

　　主干: They were fighting

　　翻译: 他们战斗着, 尽管是谨慎的, 来为学术界打开新科学的大门, 而且去把学术生活从宗教哲学中解脱出来, 而且他们把自己的工作看成是对科学和物理学而不是对哲学成长做出了贡献。

　　1.与liberate intellectual life并列的成分是: ：

　　A intellectual world

　　B The new science

　　C Ecclesiastical philosophy

　　答案：B

　　2.与envisioned并列的成分是: ：

　　A were fighting

　　B To open

　　C Contributing to

　　答案：A