问题补充：
to his scientific research, the professor cared little about his family.
A. Devoting
B. Devoted
C. Having devoted
D. To devote
答案：
A. Devoting
(答案→)B. Devoted
C. Having devoted
D. To devote
解析：考查形容词用法。固定词组be devoted to 致力于…本句中的形容词短语devoted to his scientific research是形容句子主语the professor。
