题干
Your mother prepared delicious food for us yesterday. Please say thanks ____ her.
A：for
B：to
C：with
D：of
答案(点此获取答案解析）
B
Your mother prepared delicious food for us yesterday. Please say thanks ____ her.
A：for
B：to
C：with
D：of
的近似正方形图案.当得到完整的菱形共221个时，n的值为（ ）
