属于等级资料的变量为
A．白细胞分类
B．血型
C．尿蛋白化验结果
D．性别
E．职业
参考答案：C
It was in the garden of the old house _____ he bought last year ______he dug up a pot of gold.
A．which; which
B．that; which
C．what; that
D．that; that
股息
