单项选择题
A．has come into being B．had come into being C．came into being D．comes into being
36（）A．thatB．whichC．whatD．it
单项选择题36（）
A．that B．which C．what D．it
47（）A．provedB．builtC．confirmedD．allowed
单项选择题47（）
A．proved B．built C．confirmed D．allowed
46（）A．principalsB．principlesC．possibilitiesD．probabilit...
单项选择题46（）
A．principals B．principles C．possibilities D．probabilities
