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【单选题】
一组数据有9个样本,其样本标准差是0.96,该组数据的样本平均数本标准误是( )。A.
0.11
B.
8.64
C.
2.88
D.
0.32
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【单选题】听力原文：W: I think there should be greater restrictions placed on the press and the stories they print. I can't open a newspaper or magazine without reading stories full of false information about myself...
A.
A little known actress and a literary critic.
B.
A well-known actress and a newspaper editor.
C.
A movie star and one of her fans.
D.
A movie star and a TV interviewer.
【单选题】执行下列程序段后，输出的结果是 For k1=0 To 4 y=20 For k2=0 To 3 y=10 For k3=0 To 2 y=y+10 Next k3 Next k2 Next k1 Print y
A.
90
B.
60
C.
40
D.
10
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