A、really great!
B、very great!
C、I am sorry
第1题:
how many newspapers are there in britain?
A. About 1400.
B. 140.
C. About 150.
D. About 100.
第2题:
第3题:
使用merge方法对DataFrame对象temp1和temp2进行列上的合并时,设置参数________,实现按照两个对象键值的交集进行合并。
A.how=right
B.how=left
C.how=inner
D.how=outer
第4题:
第5题:
第6题:
IMMRD部分各自功能的关键词是什么?
A.Introduction, Materials&Methods, Results, Discussion
B.What/Why, How, Findings, Significance of findings
C.How, What, Meanings, Findings
D.Findings, How, What, Meaning of findings