( The rising of costs ) of data-processing operations at many financial insititutions has created a growing opportunity for independent companies to provide these services more efficiently and at lower cost.
A. The rising of costs
B. Rising costs
C. The rising cost
D. Because the rising cost
E. Because of rising cost
D E 没有主语,排除。谓语是单数,B 排除。A是成本的上升,C是上升的成本,句意是创造了更多的机会去提供服务。感觉意思都说的过去,纠结好久。答案是C。做题时没有关注到后面的 at lower cost,不知道这里和前面的cost有没有关系,是否可以根据这里把A排除?麻烦老师讲解。
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【请May老师回答】这题鸡精提供的答案是D 可是我觉得第二个条件不能得出呢 假设n三次方是x平方 除以n平方 是可以得到x/ n 平方 但是x/n 不一定是整数呀?