环形接地体和内部环形导体应连通道钢筋或金属立面等其他屏蔽构件上，应每隔（）米连接一次。
A.5
B.10
C.15
D.20
参考答案：A
绝对值大于1且不大于5的整数有（ ）个．
— Is this your pen?
— _____. It's Tony's pen. [ ]
A. Yes, it is
B. No, it isn't
C. Yes, I am
D. No, I am not
