言语障碍分为言语缺陷和语音缺陷，前者包括（）。
A.学语滞迟
B.发声困难
C.言语困难
D.构音困难
E.失语症
参考答案：A, B, C, E
The student union’s president was appalled by the complacency of his classmates; not one of the seniors seemed to care about the theme of the band.
A．compliment B．complement C．commitment D．contentment
循环冷水温度控制指标为（）℃。
A.≯25
B.≯28
C.≯32
D.≯35
