题干
Did you hear ______?
A：what did I say
B：what I said
C：I said what
D：what I say
答案(点此获取答案解析）
B
Did you hear ______?
A：what did I say
B：what I said
C：I said what
D：what I say
满足
，
，通过求
，
猜想
的一个通项公式为（ ）
是虚数单位，
=
（ ）