【单选题】【消耗次数：1】
Charles regretted ______ the TV set last year. The price has now come down.
①
buying
②
to buy
③
of
④
from
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相关题目
【单选题】
11.The United Nations managed to ______millions of people from hunger last year.
①
preserve
②
sell
③
save
④
. buy
【单选题】
These children are ______ this year than they were last year.
①
more tall
②
more taller
③
very taller
④
much taller
【单选题】
These children are _________ this year than they were last year.
①
moretall
②
moretaller
③
verytaller
④
muchtaller
【单选题】
16.-This dress was last year’s style. -I think it still looks perfect ______ it has gone out this year.
①
so that
②
even though
③
as if
④
ever since
【单选题】
These children are_______this year than they were last year.
①
moretall
②
moretaller
③
verytaller
④
muchtaller
【单选题】
9. These children are ____this year than they were last year.
①
more tall
②
more taller
③
very taller
④
much taller
【单选题】
They [填空] in Beijing nearly three weeks last year.
①
stayed
②
stay
③
stays
④
staying
随机题目
【多选题】
两个样本均数比较的t检验的应用条件包括（ ）
①
样本量较小，随机的抽取自正态总体
②
两小样本的标准差相等
③
两个样本是配对样本
④
两小样本所属总体的方差相等
⑤
样本量较小，样本所属总体的分布不明
【多选题】
以下关于样本的说法，正确的是（ ）
①
样本是从总体中随机抽取的
②
样本来自的总体应该是同质的
③
样本中应有足够的个体数
④
样本来自的总体中不能有变异存在
⑤
随意抽取的总体中任意个体