In some cases, when a predator approaches, fishes escape on hearing ______.A. the sounds of other speciesB. the sounds of their preyC. the sounds of the approaching enemyD. the sounds of their fellows
In some cases, when a predator approaches, fishes escape on hearing ______.
A. the sounds of other species
B. the sounds of their prey
C. the sounds of the approaching enemy
D. the sounds of their fellows
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单选题When ____ is produced, complete closure of the articulators is involved so that the air stream cannot escape through the mouth.AfricativeBstopCaffricateDlateral
单选题In some cases the organisms that cause blood poisoning enter the bloodstream through contaminated needles or other improperly sterilized instruments.AcontactedBinfectedCcontagiousDinfectious
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