题干
In this experiment, they are woken up several times during the night, and asked to report what they＿＿＿＿.
A：had just been dreaming
B：are just dreaming
C：have just been dreaming
D：had just dreamt
答案(点此获取答案解析）
C
在
内单调递减；命题Q：不等式 
的解集为R．如果“P或Q”是真命题，“P且Q”是假命题，则实数a的取值范围是 （ ）