打电话时除一般寒暄外，要把打电话的内容用（）的时间准确简洁地表述清楚。
A.较少
B.较多
C.大部分
D.全部
参考答案：A
简述500kV线保护的配置原则。
What he had said and done in the school ______ his parents and teachers.
A．was pleased
B．pleased
C．pleased by
D．pleased with
