According to a news report, the 309 service staffs working in the Beijing-Shanghai high speed railway were selected from more than 5,000 employees of the Beijing Railway Bureau. These members must meet several requirements: they must be female, be 28 years old or younger, have fair-complexion and a curvy figure, weigh less than 60 kilos and be between 165-170 centimeters in height. Some people think this is discrimination against the otherwise 'unfit' employees. What is your opinion? Should we have these requirements for railway service staffs? Write an essay of about 400 words. You should supply an appropriate title for your essay.