有调车人员随车出入各岔线的围墙和栅栏大门边缘至线路中心线的距离为（）mm。
A、2500
B、3200
C、3600
D、4000
参考答案：B
下列与银杏叶"敛肺、平喘、活血化瘀"功效相关的药理作用中，错误的是（）
A.抗心肌缺血再灌注损伤
B.扩张血管
C.祛痰作用
D.抑制血小板聚集
E.保肝，降血脂
Task 5 Conversation: The following are two business letters. After reading them, you should give brief answers to the 5 questions (No. 56 through No. 60) that follow. The answers should be no more than 3 words. They should be written after the corresponding numbers on the Answer Sheet. Letter OneDear Sirs, On 5th October I bought one of your expensive "Apollo" fountain pens from Julian’s, a big department store of this town. Unfortunately I have been unable to use the pen because it leaks and fails to write without making blots. I am very disappointed with my purchase. On the advice of Julian’s manager I am returning the pen to you and enclose it with this letter for correction of the fault. Please arrange for the pen to be fixed or replace it with a new one and send it to me as soon as possible. Letter TwoDear Sirs, Thank you for your letter of 9th October enlosing the defective "Apollo" fountain pen, received today. We very much regret that the pen you bought has given you trouble. Normally each of our pens is individually examined before being passed into store and it is hard to understand why this one escaped examination. We have passed your pen to our quality control department for inspection and report. Meanwhile, we are arranging to replace your pen with a new one. We extend our apologies for the inconvenience this matter has caused you, but are confident that the replacement pen you will be receiving will prove satisfactory.
When was the Letter One writtenIt was written ______.
