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【简答题】
美国消费者报告中心对2000名成人进行了一次电话调查,了解他们关注的关于未来的主要经济话题。调查结果显示,其中有1760人的回答认为:他们关注的主要经济话题是对未来的社会保障。要求计算: (1)成人当中关注的主要经济话题是社会保障的人的总体比例的点估计为___%。 (2)当置信度为95%时,成人当中关注的主要经济话题是社会保障的人的总体比例的估计区间为___%到___%。 注:计算结果保留两位小数
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皮皮学刷刷变学霸
举一反三
【单选题】Doris's success lies in the fact ______ she is co-operative and eager to learn from others.
A.
which
B.
that
C.
when
D.
why
【单选题】按组织再生能力的强弱比较,下列哪项正确
A.
脂肪组织 >神经组织>肝细胞
B.
软骨 > 血管内皮细胞 > 腺上皮细胞
C.
骨 > 平滑肌细胞 > 神经细胞
D.
鳞状上皮细胞 > 横纹肌 > 周围神经
E.
肾小管上皮细胞 > 骨髓细胞 > 脂肪细胞
【单选题】Doris’ success lies in the fact _______she is co-operative and eager to learn from others.
A.
which
B.
that
C.
when
D.
why
【单选题】Jane Austin proposed ______.
A.
the Speech Act theory
B.
the Co-operative principles
C.
the Polite principles
D.
pragmatics
【简答题】co-operative ________
【单选题】Doris' success lies in the fact _________ she is co-operative and eager to learn from others.
A.
which
B.
that
C.
when
D.
Why
【简答题】What are the four maxims of the co-operative principle? Which maxim does this speaker seem to be particularly careful about; 'Well, to be quite honest, I dont think she is ill today. '
【简答题】A．North Korea was not co-operative in the negotiations. B．North Korea was quite co-operative in the negotiations. C．North Korea was ready for war against the US. D．North Korea was ready to give up its...
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