书面表达。

     请根据下面Linda信中提出的困惑，以读者Mei的名义为她写一封80词左右的回信，帮她解决问题。

Dear Editor,

     I had my ears pierced without asking for permission from my mother, and she is angry with me now.

She can't accept the fact that teenagers get their ears pierced. I think it isn't a big deal for me to do this.

I argued with my mother and we were both unhappy. Can you tell me how to solve this problem?

                                                                                                                            Linda

Dear Linda,

     I read your problem from the Newsletter. In my opinion,___________________________________________________________________________________________________________________________________________________________________________________________________

     Good luck to you!

                                                                                                                                      Mei

笨重、巨大的物件和可能破坏铁路设备、干扰行车的物体通过道口时，应采取安全和防护措施，并经（）的许可。

A、道口工

B、道口交警

C、线路（道口）工长

D、值班员