题干
________I have to sell my house, I'll keep my business going.
A：Even as
B：Even though
C：Even so
D：As though
答案(点此获取答案解析）
B
________I have to sell my house, I'll keep my business going.
A：Even as
B：Even though
C：Even so
D：As though
和
，规定：
，当且仅当
；运算“
”为：
；运算“
”为：
，设
，若
，则
（ ）