For this part, you are allowed 30 minutes to write a letter. Suppose you are Wang Lin. Write a letter to your friend Liu Qiang. You should write at least 120 words according to the situation given below in Chinese: 假设你的好朋友是大学四年级学生,正在考虑是考研究生继续深造,还是大学毕业后就踏上工作岗位。请给他写封信表明你的态度。