提問 GWD-10-3 請大N指導

Q3:

Unlike human runners, who broke the
four-minute mile in 1954 and they consistently recorded faster times ever
since, horses in classic races such as the Kentucky Derby have had winning
times with little improvement: 
Secretariat’s world-record-breaking Derby tine of 1:59 2/5, for example,
was set in 1973 and remained unsurpassed more than a quarter of a century
later.

        
1. they consistently recorded faster times ever since, horses in
        classic races such as the Kentucky Derby have had winning times with
        little improvement

        
2. they have consistently recorded faster times ever since, those
        of horses in classic races such as the Kentucky Derby have shown little
        improvement in winning times

        
3. have consistently recorded faster times ever since, horses in
        classic races such as the Kentucky Derby have shown little improvement in
        winning times

        
4. have consistently recorded faster times ever since, in those of
        classic races such as the Kentucky Derby, horses have had winning times
        with little improvement

        
5. consistently recorded faster times ever since, those of horses
        in classic races such as the Kentucky Derby have shown little improvement
        in winning times

    

   Answer:

非牛.

句子中的CONSISTENTLY和EVER SINCE 决定了句子时态应为现在完成时而不是过去时.