一、考研英语词汇练习 【同源精句175】 Instead of today’s patchwork, governments should share the responsibility to assure that all eligible voters are on the rolls.
本句来源于考研1号考研英语词汇《非常词汇》同源精句175，page.53.
二、考研英语一真题长难句练习 【典型难句】The second half of the 20th century saw a collection of geniuses, warriors, entrepreneurs and visionaries labour to create a fabulous machine that could function as a typewriter and printing press, studio and theatre, paintbrush and gallery, piano and radio, the mail as well as the mail carrier.
三、考研英语二真题长难句练习 【典型难句】Given the current divorce rate of nearly 50 percent that amounts to millions of cases in the United States every year—a virtual epidemic of failed conversation.
本句来源于考研英语(二)2010年真题，Section Ⅱ Reading Comprehension Text 2第三段;考研英语二真题超细解《考研圣经》Page 42.