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”。
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