题干
The box _______ your English learning materials is on the desk next to Mr Li's.
A：contains
B：containing
C：contained
D：to contain
答案(点此获取答案解析）
B
The box _______ your English learning materials is on the desk next to Mr Li's.
A：contains
B：containing
C：contained
D：to contain
在曲线
=
上，
为曲线在点