单选题 We are engaged in the interdisciplinary field of the science and technology of materials.
  • A. take up
  • B. busy with
  • C. interested in
  • D. take in


【正确答案】 B
【答案解析】be engaged in“忙于某事”；take up“开始从事某事”；be busy with“忙于某事”；be interested in sth．“对某事感兴趣”；take in“屈服”。