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【多选题】
如果变量X和变量Y之间的相关系数显著，则下列说法正确的有( )。(中财2008年研)A.
X变化可能是影响Y变化的原因
B.
Y变化可能是影响X变化的原因
C.
两者相关可能出于其他变量的影响
D.
两者之间的相关可能是伪相关
E.
二者之间在现实中一定存在关联
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举一反三
【简答题】上个月经理忙于一项对营销活动的研究工作。(be involved in)
【单选题】The old man has two sons, ( ) are lawyers.
A.
both of them
B.
both of who
C.
both of whom
D.
both of they
【单选题】The old man has two sons, ___ are lawyers
A.
both of whom
B.
both of them
C.
all of whom
D.
both
【简答题】健康的海洋可以帮助缓解我们的人口对这个星球造成的负担,但是为了有效保护海洋,我们必需能够探索、观察和了解海洋的全部。
【单选题】The man has two sons, and ____ of them are strong. One is tall and ____ is short.
A.
All, another
B.
Neither, the other
C.
Both, another
D.
Both, the other
【简答题】The man has two sons, and ____of them are strong. One is tall and ____is short.
【简答题】上个月经理忙于一项对营销活动的研究工作。
【单选题】The man has two sons, and ____ of them are strong. One is tall and _____ is short.
A.
all, another
B.
neither, another
C.
both, the other
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