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。 ygJr=_
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　　1. After people have learned that magnets attract things, centuries passed ____ they took note of the fact that magnets sometimes also repel things. IJYL s  
　　A. before B. until C. after D. since M>9-=$ 7  
　　2. He is off to Paris again tomorrow. He tells me that, with this journey, he ________ there and back twenty times. o8/;;*  
　　A.will be B. will have been xsd_Uu *  
　　C.will go D. will have gone {'?)FX*W  
　　3. Many ways have been found_____small and simple machine to process large and complicated machine parts. |F,R&<2  
　　A. by using B. to use C. using D. used f=C亚洲国产精品va在线观看麻豆