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【多选题】
简单随机抽样的特点是:A.
不适于抽样范围大及工作量大的研究
B.
每个抽样单位均有同等的机会被抽中
C.
方法简便易行
D.
样本代表性好
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反馈参考答案：
举一反三
【单选题】Only when the war was over ____ return to his hometowns.
A.
have the soldiers
B.
the soldiers
C.
the soldiers did
D.
did the soldiers
【单选题】中外合资经营企业的合营期限，根据不同行业和项目的具体情况，由合营各方协商解决。一般项目的合营期限原则上为( )。
A.
5～10年
B.
10～20年
C.
10～30年
D.
15～30年
【单选题】It is not surprising that former soldiers have difficulty in ___________ civilian life.
A.
sticking to
B.
relating to
C.
adjusting to
D.
connecting to
【单选题】If you __________ Johnny Moder until recently, you'd think the photograph on the wall was strange.( )
A.
shouldn't contact
B.
didn't contact
C.
weren't to contact
D.
hadn't contacted
【单选题】What upset the child most was _________to play games on the computer before he finished his task.
A.
his not to be allowed
B.
him being not allowed
C.
his not being allowed
D.
him to be not allowed
【简答题】With his friends _______(give) help, he finished the task in advance.
【单选题】He is the only one of the students who__________finished the task in time．
A.
is
B.
are
C.
have
D.
has
相关题目：
【单选题】中外合资经营企业的合营期限，根据不同行业和项目的具体情况，由合营各方协商解决。一般项目的合营期限原则上为( )。
A.
5～10年
B.
10～20年
C.
10～30年
D.
15～30年
参考解析：
知识点：
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