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【单选题】
用来描述样本特征的概括性数字度量称为A.
参数
B.
统计量
C.
变量
D.
变量值
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举一反三
【简答题】There are both similarities and differences between the tourist-attracting countries Italy and Greece. (1) , both the Italians and Greeks are friendly people. (2) , the cultural relics of both countri...
【简答题】A．About four thirty. B．About five thirty. C．About three thirty. D．About three,
【单选题】2) The tourist (____________) the map is a relative of my father.
A.
looking at
B.
looked at
【单选题】I usually exercise __________.
A.
about at ten thirty
B.
at about ten thirty
C.
at ten thirty about
【单选题】He played golf _____. [ ]
A.
about thirty years
B.
for thirty years
C.
thirty years before
D.
for long time
【单选题】There are _____ boys in my class. [ ]
A.
thirty two
B.
thirty and two
C.
thirty-two
D.
thirty-and-two
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