题干


In the final exam of last term, our maths teacher Mr.Wu gave us  ________we all couldn’t work out .
A.such a difficult problem thatB.so a difficult problem as
C.so difficult a problem thatD.as difficult a problem as
上一题 下一题 0.85难度 单项选择 更新时间:2010-09-09 09:12:08

答案(点此获取答案解析)