ZYJ7型电液转辙机动作电流不大于2安培，道岔因故不能转换到位时，电流不得大于（）.
A.2.3A
B.2.4A
C.2.5A
D.2.9A
参考答案：A
I hear the children have problems ______ the zoo. [ ]
A to get to
B to getting
C getting to
D getting at
我国领土南北跨纬度很广，大部分地区属于
A．热带
B．南温带
C．北温带
D．北寒带
