Hi, Sunjian:<br /><br /><br />I have uploaded your edited document, and I hope that you find the suggestions helpful. If you have any questions, please send a message to me via Editor World.<br /><br />Another excellent study which I could only slightly improve here and there. &nbsp;<br /><br />Best wishes, George (TypeRighter)<br /><br />I am usually available for editing between 6:00 am and 10:30 pm (EST). If my status says 'unavailable', you can still reach me via Editor World.