This summer I visited the farm set up by my uncle, he raised fifty .
A. there; cattle
B. where; head of cattle
C. in which; head of cattles
D. where; cattle
网友回答
A. there; cattle
(答案→)B. where; head of cattle
C. in which; head of cattles
D. where; cattle
解析： 考查定语从句和名词的用法。此句为非限制性定语从句，且从句中不缺主语和宾语，先行词为farm，所以应用引导词where；cattle为牛的总称,可用head of cattle，也可以直接用cattle, 但不可加s, 可排除A、D；,而C项中介词应为on, on the farm为固定短语。综上所述答案为B。