2017考博英語詞匯語法模擬試題及答案

詞匯語法題大多數博士研究生招生院校都有此類題型，考博生們在平時復習可以多練習找找語感。 ;Fw{p{7<  
　　1. After people have learned that magnets attract things, centuries passed ____ they took note of the fact that magnets sometimes also repel things. T,z7U2O  
　　A. before B. until C. after D. since $['_m~ 2  
　　2. He is off to Paris again tomorrow. He tells me that, with this journey, he ________ there and back twenty times. :x"Q[079  
　　A.will be B. will have been BYj亚洲国产精品va在线观看麻豆