题干
The girl ___________ is sitting under the big tree is Lynn’s cousin.
A：who
B：whom
C：whose
D：which
答案(点此获取答案解析）
A
The girl ___________ is sitting under the big tree is Lynn’s cousin.
A：who
B：whom
C：whose
D：which
（2x2-3x+1）的递减区间为 （ ）