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【多选题】
在中国知网 CNKI 数据库中,可以检索到下列哪些类型的文献? ( )A.
期刊论文
B.
会议论文
C.
学位论文
D.
标准
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反馈参考答案：
举一反三
【单选题】，the wind died down and people began to appear on the street.
A.
A bit less
B.
Little by little
C.
A little bit
D.
Not a little
【多选题】肿瘤的二级预防里,适合进行筛检的肿瘤应具备什么特征
A.
发病率较高而且预后严重的恶性肿瘤
B.
应有能被检出的临床前期，最好是有能被检出的扩散前期
C.
有简便经济准确及可接受性强的早期发现的方法
D.
若早期发现，及时诊断治疗，有治愈的可能
【单选题】________，the wind died down and people began to appear on the street. [ ]
A.
A little bit
B.
Not a little
C.
A bit less
D.
Little by little
【简答题】Nowadays, some students have dropped off school to start their own enterprises. They have their own idol: Bill Gates who has left Harvard to devote his energy to Microsoft and became the leader of the...
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