At the request of Mr.Xizhen Chen,my former student in the Department of Computer Science,Beijing Univ.of Sciences,I am glad to write this letter furnishing my uation ofhis academic aptitude for your reference.Mr.Chen is interested in your graduate program in Computer Science.I came to know him in September 1987 when Mr.Chen enrolled in my class on FORTRAN IV Programming,a three semesterscourse.In the class he was one of the most outstanding students.At the semester final he earned ahigh grade of 81,which should beAaccording to our grading system.I also ound him good at other studies.After the class,he had personal talks with me several times.