题干
This is the novel _______ is written by Zheng Yuanjie.
A：who
B：what
C：that
D：/
答案(点此获取答案解析）
C
This is the novel _______ is written by Zheng Yuanjie.
A：who
B：what
C：that
D：/
在(-1,+∞)上是减函数,则b的取值范围是( )
