2012大学英语四级时态真题训练（5）

2012大学英语四级时态真题训练（5）

1.While people may refer to television for up-to-the-minute news, it is unlikely that
    
    television______ the newspaper completely. (95.6/48)
   
    A. will replace   B. have replaced   C. replace    D. replaced
    2.The fifth generation computers, with artificial intelligence, _______ and perfected now.
   
    (96.1/21)
   
    A. developed  B. have developed   C. are being developed   D. will have been developed
    
    3.It’s reported that by the end of this month the output of cement in the factory_______ by about
   
    10%. (96.1/39)
   
    A. will have risen   B. has risen    C. will be rising    D. has been rising
    
    4.Sir Dennis, who is 78, has made it known that much of his collection ______¬ to the nation.
   
    (96.6/24)wｗw.ExamＷ.CoM
    
    A. has left   B. is to leave   C. leaves   D. is to be left
    
    5.Before the first nonstop flight made in 1949, it_______ necessary for all planes to land for
   
    refueling. (96.6/25)
   
    A. would be   B. has been   C. had been    D. would have been
答案：ACADC