根据税法规定的征税客体性质，属于行为税法的是( )
A．消费税法
B．营业税法
C．印花税法
D．契税法
参考答案：C
【20】 分析是将数据集分割为若干有意义的聚簇的过程，它也称为无制导的学习。
There is probably no better way for a foreigner to appreciate the richness and variety of the English language than () the various ways in which Shakespeare used it.
A. to study
B. studying
C. study
D. by studying
