The houses of the rich are generally larger than of the poor. A. thoseB. onesC. the oneD.

问题补充：

The houses of the rich are generally larger than of the poor.

A. those

B. ones

C. the one

D. that

答案：

(答案→)A. those

B. ones

C. the one

D. that

解析：根据文章内容The houses of the rich，可知答案为A，具有可比性。