单选题 ______it may seem, gun ownership is declining over all in the United States — nearly a third of American households having an adult with a gun, which is down from nearly half of households in 1973.
【正确答案】 A
【答案解析】解析:本题考查倒装。as和though均能引导倒装形式的让步状语从句,这类倒装句置于句首的可以是形容词、副词、动词或名词等。需注意的是:用though时也可以不倒装,用as时必须倒装。而although和as though均不能引起倒装,首先排除[C]和[D]。空后的seem是系动词,后只能接形容词,可看作是“seem to be+形容词”句式的一种简化形式,故答案为[A]项。