题干
I shall never forget those years ____ I lived in the country with the farmers, ____ has a great effect on my life.
A：that; which
B：when; which
C：which; that
D：when; a
答案(点此获取答案解析）
B
,若
在区间
上是减函数,且对任意的
,总有
,则实数
的取值范围是( )
