对于新版gre考试句子填空部分，考生都会觉得难度增加了。其实这主要是平时对于这部分的内容复习不到位造成的。如果你能了解这些句子的逻辑关系，相信对于选出答案就十分容易了。

　　新版gre考试句子填空——根据明显的指示词寻找重复 such/ this/that/which/the

　　1. Longdale and Stern discovered that mitochondria and chloroplasts ________ a long, identifiable sequence of DNA; such a coincidence could be ________only by the transfer of DNA between the two systems.

　　A. manufacture ... accomplished

　　B. reveal ... repeated

　　C. exhibit ... determined

　　D. share ... explained

　　E. maintain ... contradicted

　　2. The proponents of recombinant DNA research have decided to ________ federal regulation of their work; they hope that by making this compromise they can forestall proposed state and local controls that might be even stiffer.

　　A. protest

　　B. institute

　　C. deny

　　D. encourage

　　E. disregard

　　3. Laws do not ensure social order since laws can always be ________, which makes them ________ unless the authorities have the will and the power to detect and punish wrongdoing.

　　A. contested ... provisional

　　B. circumvented ... antiquated

　　C. repealed ... vulnerable

　　D. violated ... infective

　　E. modified ... unstable

　　4. Social tensions among adult factions can be ____ by politics，but adolescents and children have no such ____ for resolving their conflict with the exclusive world of adults.

　　A. intensified ... attitude

　　B. complicated ... reli

　　C. frustrated ... justificaiion

　　D. adjusted ... mechanism

　　E. revealed ... opportunity

　　以上这些新版gre考试句子填空的习题是针对解释型重复的逻辑关系。判断出句子的逻辑关系后，才能更为准确地选出答案。

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