单项选择题
A．He wears a coat bought in the mall B．He got a new job at the barbershop C．He had a finger hurt last night D．He had his hair cut yesterday
A．Evolution of monarch butterflies. B．Living habits of monarch butterflies. C．Migration patterns of monarch butterflies. D．Environmental impacts on monarch butterfly life.
A.advantages B.assess C.bother D.conserved E.deduction F.discount G.embarrass H.features I.fluctuate J.indefinite K.insured L.major M.naturally N.potential O.simultaneously