Because of the poor harvest wheat prices have in the last six months.A. addedB. jumpedC

问题补充：

Because of the poor harvest, wheat prices have in the last six months.

A. added

B. jumped

C. amounted

D. developed

答案：

A. added

(答案→)B. jumped

C. amounted

D. developed

解析：jump (=rise suddenly in price) 指“(价格)暴涨”。