---Which one is different from others?---I think it is .A. shortB. worldC. horseD. sport

问题补充：

---Which one is different from others?

---I think it is .

A. short

B. world

C. horse

D. sport

答案：

A. short

(答案→)B. world

C. horse

D. sport

解析：ACD中or的发言是/?:/,而world中的or的发音是/c:/,所以本题选B。