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:
75%
的考友选择了A选项
18%
的考友选择了B选项
3%
的考友选择了C选项
4%
的考友选择了D选项
你可能感兴趣的试题
Idon''tdoubthowtheplanwillbewellreceived
Watermakesupsome70percentagepointsoftheb
IftheyspendsometimeonChinesehistory,they
Wearenotconsciousoftheextentofwhichworkp
Therecentconferenceontheeffectiveuseofth
An"epigram"isusuallydescriedasabrightorw