题干
. –Mike, than you for helping me.
--_____.
Which is a wrong one below?
A：My pleasure
B：With pleasure
C：You’re welcome
D：That’s alright
答案(点此获取答案解析）
B
A：My pleasure
B：With pleasure
C：You’re welcome
D：That’s alright
是非空集合，定义集合A*B为阴影部分表示的集合。若
,则A*B
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