【单选题】

Friend is better than fortune. Friend is worse than poison in some (56) . The above two statements are opposite and seem to be (57) but they can be explained (58) : The latter (59) all evil friends who (60) us astray; the former (61) all good friends who drive us towards gooD、

My (62) friend is of course a good friend (63) goodness is shown (64) . He has no bad (65) , as smoking and drinking. He lives frugally. He studies diligently (66) waste his golden time. (67) he (68) his parents and loves his brothers; at school he re-spects his teachers and (69) his schoolmates. He treats those truly who are (70) him.He never speaks of others’ evils (71) boasts of his own merits. (72) , he has all the good characters better than (73) I can follow him as a model.By his precepts I am (74) the danger of doing a wrong action.By his help I (75) all difficulties.
Indeed, if I have such a person as my friend, I shall never feel difficult and I shall never know the existence of the word "failure. \
A．unreasonable
B．unspeakable
C．unthinkable
D．unseasonable