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【单选题】
寒武纪生物大爆发的最主要特点是( )A.
一个相当混乱的时期
B.
出现了数量众多、种类单一的海洋生物
C.
有三叶虫、海绵、海蜇及一些类似蠕虫的生物
D.
现存生物门类有了各自的祖先
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举一反三
【单选题】______ of danger in the street last night, she had to go home, with a friend following her.
A.
To be warned
B.
Warned
C.
Having warned
D.
Warning
【单选题】She w al k alone in the street at night. [来源:Z*xx*k.Com]
A.
did not dare to
B.
not dare
C.
dared not to
D.
are not daring
【单选题】病人,男性,71岁,因“呼吸窘迫综合症”入院,护士系统的运用视,触,叩,听,嗅等评估手段和技术收集资料,其中通过触觉观察获得的资料室
A.
意识状态
B.
营养状态
C.
脉搏节律
D.
皮肤颜色
E.
呼吸的频率
【判断题】公司当年度税后营业利润很多，却不能偿还到期债务，说明企业的短期偿债能力存在问题，所以主要分析的指标是流动比率，但流动比率可信性的影响因素是存货周转率和应收账款周转率。（ ）
A.
正确
B.
错误
【简答题】Today is Tom’s birthday. After school he walks past the shop on the street corner. He looks at the window. That pair of trainers is still there. He really wants to have them very much. He was very sad...
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