They need to be（）at collaborating with colleagues outside their own department．
They need to be（）at collaborating with colleagues outside their own department．
A、​adopt
B、adept
C、adapt
D、abrupt
【正确答案】：B
【题目解析】：adept at, 固定短语，熟练于......adopt意为收养，接受；adapt意为适应；abrupt意为生硬的，根据句意，选B.他们需要能和自己部门外的同事熟练合作。
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