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