I think, "appoint some as" is a collocation phrase verb.
The second and third to the last has departed from original. Anyway, you got them more concise and better for the oral presentation. The original one can not get more than 60 out of 100 from a sixth grade teacher.
I try to savage the original one.
I like the your last paragraph
本帖於 2009-10-26 05:21:25 時間, 由版主 林貝卡 編輯