{$mEDiAurl}
whAt DoEs thE proFEssor imply whEn shE sAys this:A．mArinE mAmmAls ArE not hArmED By supErsonAr.
B．thE supErsonAr hAs An ADvErsE EFFECt on mArinE mAmmAls.
C．thE militAry is DEEply ConCErnED ABout thE wElFArE oF Dolphins.
D．mArinE mAmmAls think supErsonAr is AnothEr mAmmAl.