When hunting a job, you'd better communicate with people on a level above you, because （）

单项选择题According to the passage, it is better for one with an urgent task to ask help from ______.

单项选择题If you are not employed by a company, you should NOT （）

A．write a letter to present your thanks for interview
B．write a letter showing the reason why you fail in the interview
C．apply for the same position again several weeks later
D．apply for other available positions in this company some weeks later