具体指导操作的过程中，应采取集中指导的方法，也可采用个别指导的方法，并要做到“______”
参考答案：五勤
—What is the matter with Mary?
—______.
[ ]
A. She is a student.
B. She is reading.
C. She has a bad cold.
SOA模型具有松散耦合、粗粒度服务、标准化接口等特征。
