【单选题】【消耗次数：1】
当自变量的数值确定后，因变量的数值也随之安全确定，这种关系属于
①
相关关系
②
函数关系
③
回归关系
④
随机关系
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相关题目
【单选题】
在下列变量之间的关系中，不是相关关系的是（）
①
在销售价格不变的情况下，某种商品的销售额与销售量之间的关系
②
儿子的身高与他父亲的身高之间的关系
③
家庭的支出与其收入之间的关系
④
个人的血压和年龄之间的关系
随机题目
【单选题】
9.We should really take some effective ______ to prevent such terrible things from happening again.
①
measures
②
steps
③
means
④
ways
【单选题】
11.Andrew was determined to ______ a computer career after graduation.
①
apply
②
shave
③
purse
④
select
【单选题】
At the bus stop _____ a soldier and two young people on their way to North Carolina.
①
were
②
was
③
is
④
waiting
【单选题】
12.Among these articles, which do you think are most ______ to interest our students?
①
competent
②
likely
③
awkward
④
unexpected
【单选题】
2.I couldn’t understand why he pretended ______ in the bookstore.
①
to see me not
②
not to see me
③
not see me
④
to see not me
【单选题】
In the meantime, the question facing business is whether such research is _____ the costs.
①
worth
②
worth of
③
worthy
④
worthwhile
【单选题】
7. They hope to_________the source of the infection.
①
track down
②
look down
③
look at
④
back down
【单选题】
1.The movie star ______ with your sister, didn’t he?
①
was used to dance
②
used to dancing
③
used to dance
④
was used to dancing
【单选题】
7.We had warned him________the danger but he turned a deaf ear to our warning.
①
to
②
along
③
in
④
of