资料题：According to the passage, some managers don't have to do any letter writing because（　）。

Like fine food, good writing is something we approach with pleasure and enjoy from the firsttaste to the last.And god writers, like good cooks, do not suddenly appear full-blown.Quite the contrary, just as the cook has to undergo an intensive training, mastering the skills of his trade, the writer must sit at his desk and devote long hours to achieving a style in his writing,whatever its purpose -schoolwork, matters of business, or purely social communication.You may be sure that the more painstaking the effort, the more effective the writing, and the more rewarding.There are still some remote places in the world where you might find a public scribe to do your business or social writing for you for a fee.There are a few managers who are lucky enough to have the service of that rare kind of secretary who can take care of all sorts of letter writing with no more than a quick note form.But for most of us, if there is any writing to be done, we have to do it ourselves.We have to write school papers, business papers or home papers.We are constantly called on to put words to paper.It would be difficult to count the number of such words, messages, letters and reports put into the mails or delivered by hand, but the daily figure must be enormous.What is more, everyone who writes expects, or at least hopes, that this writing will be read.We want to arouse and hold the interest of the readers.We want whatever we write to be read, from first word to last, not just thrown into some"letters-to-be-read" file or into a wastepaper basket.This is the reason we bend our efforts toward learning and practicing the skills of interesting, effective writing.