原题P479、16:- ?( f! i9 X; R" U
Along the curve of islands known as the Florida Keys lies a reef of living coral, $ R: F/ A1 w! D: K. x D
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the only one of a kind in the continental United States. No error' r& Q' ]2 N+ X# k; l8 A0 ^
C D E - S$ ]5 I# z5 z* `: [D怎么错了 % e+ r. S( v2 q/ E, d- x* [因为划不上下划线,