【C3】A．refersB．appliesC．happensD．concerns

【C7】A．concernsB．concernC．concerningD．concerned

【C18】A．confirmedB．ensuredC．assumedD．concerned

【C14】A．happenedB．would happenC．happensD．happen

A．adaptsB．appliesC．relatesD．appeals

【C13】A．detailedB．givenC．involvedD．concerned

56._________A. refersB. concernsC. turnsD. comes