个长度为10米的铁线，其直径为1mm，其中铁的电阻率为110-1，其导线电阻为（）.

A.1.17

B.1.27

C.1.37

D.1

When you call on a Frenchman, you may chat for an hour or so,        not even a coffee or water is offered.[ ]

A．during that time

B．by that time   

C．during which time  

D．by which time