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【单选题】
why didn't steven travel to visit his mother?
A.
he was busy
B.
he was free
C.
he bought a mobile phone to call her
D.
he was unemployed
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【单选题】关于 3×4 行列表 的 X 2 检验,其自由度为
A.
2
B.
3
C.
6
D.
11
【单选题】用标准差比较分析两个同类总体平均指标的代表性的前提条件是(    )。
A.
两个总体的标准差应相等    
B.
两个总体的平均数应相等
C.
两个总体的单位数应相等    
D.
两个总体的离差之和应相等
【单选题】A strong man will __________ with the storm of fate.
A.
struggle
B.
decide
C.
comfort
D.
force
【单选题】A strong man will ()with the storm of fate.
A.
force
B.
forced
C.
is forced
D.
forceing
【单选题】为了用标准差比较分析两个同类总体平均指标的代表性,前提条件是(    )。
A.
两个总体的标准差应相等    
B.
两个总体的平均数应相等
C.
两个总体的离差之和应相等    
D.
两个总体的单位数应相等
【单选题】A strong man will bear without complaining.
A.
hardship
B.
membership
C.
friendship
D.
salesmanship
【简答题】A strong man will bear _____ without complaining.
【单选题】The earthquake caused to the district.
A.
damages
B.
damage
C.
a damage
D.
the damage
【简答题】用标准差比较分析两个同类总体平均指标的代表性,其基本的前提条件是( )。
【简答题】A strong man will bear ________ (hard) without complaining.
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