The recent surge in the number of airplane flights has clogged the nations's airtraffic control system, to lead to 55 percent more delays at airports, and prompts fears among some officials that safety is being compromised.
B. leading to 55 percent more delay at airports and prompting
E. leading to a 55-percent increase in delays at airports and prompting.
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发表于 2005-6-27 11:37:00
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