The recent surge in the number of airplaneflights has clogged the nation’s air-traffic control system, to lead to 55percent more delays at airports, and prompts fears among some officialsthat safety is being compromised. (A) to lead to 55 percent more delays atairports, and prompts (B) leading to 55 percent more delay at airportsand prompting (C) to lead to a 55 percent increase in delay atairports and prompt (D) to lead to an increase of 55 percent indelays at airports, and prompted (E) leading to a 55 percent increase in delaysat airports and prompting
B 选项的 55 percent more delay 为什么不clear?
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