it is proBABly BECAusE ______ thAt thE miDDlE pArt oF thE nEAnDErthAl FACEs projECts ForwArD.
A．thEy hAvE to ADjust to thE ColD ClimAtE
B．thEir siDE FACiAl musClEs BEComE lEss importAnt
C．thEir Front tEEth ArE usED quitE oFtEn in thEir DAily liFE
D．oF Any oF thE ABovE