【单选题】【消耗次数：1】
分群随机抽样就是每次抽取的单位是一个。该说法：（ ）
①
正确
②
错误
参考答案：
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相关题目
【单选题】
（ ）是最基本的随机抽样方法，它在抽样之前，对总体单位不进行任何分组、排列等处理，完全按随机原则从总体中抽取样本。
①
随机抽样
②
重点抽样
③
类型随机抽样
④
单纯随机抽样
【多选题】
简单随机抽样
①
试用于总体各单位呈均匀分布的总体
②
适用于总体各单位标志变异较大的总体
③
在抽样之前要求对总体各单位加以编号
④
最符合随机原则
⑤
是各种抽样组织形式中最基本最简单的一种形式
随机题目
【单选题】
Medical research has shown that the widespread use of cigarettes contributes ___ the increaseof cancers.
①
to
②
for
③
with
④
towards
【单选题】
I _____ the right to appeal to higher authorities.
①
conserve
②
reserve
③
store
④
remain
【单选题】
It s surprising that this idea took so long to _______.
①
add to
②
dispose of
③
catch on
④
absorb in
【单选题】
The problem is （） it may take time for new facts to become available.
①
that
②
how
③
what
④
if
【单选题】
Mr. Clinton, together with his wife and children, _______ going to the park next weekend.
①
is
②
has
③
are
④
was
【单选题】
Since evidence of the fraud came to light, Congress has been demanding a ______ investigation.
①
horrible
②
thorough
③
thoughtful
④
weird
【单选题】
If it were not for the fact that he was a millionaire, she ____ him.
①
might never marry
②
will never marry
③
would never have married
④
would never marry
【单选题】
On his next birthday he （） married for ten years.
①
has been
②
will be
③
will have been
④
would have been
【单选题】
Hi, welcome back! Had a nice trip?____________
①
Oh, fantastic! Fresh air, and sunshine every day.
②
Come on, I’ve got lots of fun.
③
By the way, I don’t like Saturdays.
④
Well, I’ll look forward to your phone call.