At a very young age, Professor Field used to books on radio.
A. devote to translating
B. devote himself to translate
C. be devoted to translate
D. be devoted to translating
网友回答
A. devote to translating
B. devote himself to translate
C. be devoted to translate
(答案→)D. be devoted to translating
解析：考查非谓语动词.句意:在他非常年轻的时候,菲尔德教授常常致力于翻译有关无线电的书籍.used to中to是不定式符号,后面接动词原形,be devoted to致力于,to是介词,后面接名词或者动名词作宾语,故选D.