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【单选题】
( )是把总体中的所有个体按照某种顺序排列编号,然后依固定的间隔抽取样本,间隔的大小视总体与样本数量的比率而定。A.
简单随机抽样
B.
系统随机抽样
C.
分层抽样
D.
整群抽样
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举一反三
【简答题】—I have never finished doing my homework. —___________. A. Neither do I. B. So have I. C. Neither have I.
【简答题】用什么茶具泡茶最好?
【单选题】My brother is younger than I. But he is not so tall ________ I. [ ]
A.
to
B.
than
C.
as
D.
that
【单选题】---What’s the chief ______ of the world this year? ---I think the Twin- Tower was destroyed.
A.
business
B.
matter
C.
event
D.
affair
【简答题】如果BC=C，则B=I．无关．
相关题目：
【单选题】My brother is younger than I. But he is not so tall ________ I. [ ]
A.
to
B.
than
C.
as
D.
that
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