本期应交所得税等于本期利润总额乘以所得税税率。 ()
A. 正确
B. 错误
数列{an}的前n项和Sn=n2+2n+5，则an+1+an+2+an+3=()
A. n2+6n
B. 6n+15
C. n2+6n+15
D. 6n
E. 以上答案均不正确
Which of the following is the best title for the passage？
A. Human Behavior.
B. Creatures of Society.
C. The Science of Custom.
D. The Functions of Culture.
Which of the following does the author most probably agree with？
A. The goal of the anthropology is to understand the way in which people express themselves.
B. The anthropologist tries to understand why cultures are carried on without any change.
C. The anthropologist's professional interest is as wide as the variety of customs.
D. All of the above.
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