大学英语六级

fabricate fabrication facilitate faction fair fake fall fantastic fascinate fastener faultless fearless feel fell fellowship feminine fence ferrous ferry fertile fighter filament fill filter filth finance finely finite fireplace firework firmness fission fitness fitting fixture flake flame flank flannel flap flask flatten flatter flavour flaw flee flexible flight fling float flock fluctuate fluctuation flush flutter flux fly foam follow follower footpath fore foreign foresee forge formal formerly formidable formulate formulation forsake fort forthcoming fortress forum forward fossil foster foul fowl fraction fracture fragile fragrant frail framework freight frequency frequent freshen fret friction fright frightful fringe fro frock frustrate furious further fury fuse fuss