单项选择题

Airport baggage screeners in the USA, displaying seized chain saws, machetes and knives, (21) travelers to check their luggage for offensive objects before boarding a (22)
Officials of the Transport Security Administration (TSA) (23) that since February 2002 more than 7.5 million (24) items had been seized. They included 50,000 box cutters--a (25) said to be used by the Sept. 11, 2001 hijackers --and 1,437 firearms as (26) as 2.3 million knives.
The TSA officials told a news conference most people with (27) items in their bags intended no malice but advised (28) to consult the website www.tsatraveltips.usa for advice on what to leave behind when (29) a trip.
Since the Sept. 11 attacks screeners have confiscated seemingly (30) items like nail clippers and cigarette lighters (31) passengers.
But some carry more obviously (32) items. Chain saws, a weed cutting machine, hand saws and machetes, steak knives, bottles of camping stove fuel and perfume bottles shaped like hand grenades were among items (33) as a sample of objects seized at New York’s John F. Kennedy International Airport.
While some carry-on items may have been (34) --a hockey stick or a child’s plastic sword --other (35) by TSA have yielded razor blades in tennis shoes and a bayonet hidden in a hollowed-out artificial leg.

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