试题查看

【单选题】

Trial and error are the source of our knowledge.
A.is

B.were
C.has
D.have been
查看答案解析

参考答案:

正在加载...

答案解析

正在加载...

根据网考网移动考试中心的统计,该试题:

60%的考友选择了A选项

24%的考友选择了B选项

4%的考友选择了C选项

12%的考友选择了D选项

你可能感兴趣的试题

Wheneverwehearofanaturaldisaster,wefeelsTheXinjiangAirlinesservepassengersandcusOurholidayisdoomedtofailurewithoutyou.A.You''vebeensohelpful!HowcanImakeuptoyouAHehadstudiedhard,hewouldhavebeenabletopaAmericanIndianlanguages,whichdifferwidel