室内部分安装防雷器，避雷器安装（）线。
A、保护线
B、防雷线
C、工作线
D、GPS线
参考答案：A
Her many talents were ___________all her friends.
A．envy among
B．the envy of
C．the envy at
D．envy it
道教养生为何讲究“性命双修”？
