【正确答案】:
(1)EACH OF THE THREE WORDS CONSISTS OF THREE MORPHEMES, DISHEARTEN(DIS+HEART+EN), IDEALISTIC(IDEAL+IST+IC), UNFRIENDLY(UN+FRIEND+LY).
(2)OF THE NINE MORPHEMES, ONLY HEART, IDEAL AND FRIEND ARE FEEE MORPHEMES AS THEY CAN EXIST BY THEMSELVES.
(3)ALL THE REST DIS, -EN, -IST, -IC,-UN AND -LY, ARE  NONE OF THEM CAN STAND ALONE AS WORDS.
【题目解析】:(1)这三个词中的每一个都包含三个词素:使失去勇气(dis+heart+en)、理想主义的(ideal+ist+ic)、不友好的(un+friend+ly)。(2)在这九个词素中,只有心、理想和朋友是可以独立存在的自由词素。(3)其余的dis、-en、-ist、-ic、-un和-ly都不能单独作为单词。