pp grammer questions oak trees furnish more (timber annually) in the united states than (any of) other broad-leafed tree and are （second only） to conifers （in tota）l lumber production.
the answer is b
why?
photographer edward constently (experimented new) techniques and materials (in) his quest (to have) photography accepted (as) a creative art.
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发表于 2003-5-2 05:39:00
