21. According to the Better Business Bureau, if you fail to advertise the highest price in a range of prices for a service or product as prominently as that of the lowest, it violates the New York Consumer Protection Law. (A) if you fail to advertise the highest price in a range of prices for a service or product as prominently as that of the lowest, it (B) if one fails to advertise the highest price in a range of prices for a service or product as prominently as the lowest price, it (C) failure to advertise the highest price in a range of prices for a service or product as prominently as the lowest (D) failure to advertise as prominently the highest price in a range of prices for a service or product as the lowest (E) failing to advertise as prominently the highest price in a range of prices for a service or products as that of the lowest
答案是C。由于C和D太像了,很容易选错。为什么C的as the lowest不需要补全that of the lowest?因为是指price呀。 如果C比较的是宾语,那么D呢?如何快速所定正确答案呢?
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