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[*] how DoEs thE proFEssor orgAnizE thE inFormAtion thAt shE prEsEnts
A．By CompAring DiFFErEnt rEAsons For Exploring thEArCtiC oCEAn
B、By DEsCriBing thE pAst, prEsEnt, AnD FuturE oF thE northwEst pAssAgE
C．By ExplAining thE CAusEs oF ClimAtE ChAngE in thEArCtiC rEgion
D．By listing populAr tourist AttrACtions in thE northwEst pAssAgE