单选题
I always think of books with unutterable feelings, being deeply indebted to them, as I am, for the warmth they have brought me.
【正确答案】
C
【答案解析】[解析] unutterable“非言语所能表达的，十足的”。本句意为：我对书籍总是怀有深厚的感情。由于书籍为我带来的温暖，我对它们有着深深地感激之情。A．preferred首选的，优先的；B．mixed混合的；C．profound深刻的，意义深远的，造诣深的；D．dissatisfied不满意的，不高兴的。因此C为答案。