【单选题】若数列【图片】的通项公式是【图片】,则此数列 ( )
【单选题】听力原文:M: A lovely day, isn't it? W: It is. M: It seems it will be a fine all day. W: I think it will be a dry day. There's hardly a cloud in the sky. M: We'll have a heat wave in the afternoon. I'm afr...
【单选题】听力原文:M: Has Cecilia been working hard on the term paper? W: Day in and day out! Q: What does the woman say about Cecilia? (18)
A.
She's studying all the time.
B.
She's out all the time.
C.
She goes in and out frequently.
D.
She studies twice a day.
【判断题】一个总体下,某一标志的标志值变换为标准分数后的算数平均数等于0,标准差等于1.
【简答题】33,1-m very busy the_ w ______day.
【单选题】听力原文:M: A lovely day, isn't it? W: It is. M: It seems it will be fine all day. W: I think it will be a dry day. There's hardly a cloud in the sky. M: We'll have a heat wave in the afternoon. I'm afrai...