Programming is a (46) that has various engineering and (47) aspects. Although most of these aspects are interrelated, each of them covers a number of (48) and goals winch are very specific. The progress being made in teaching (49) is reflected by the fact that most (50) science curricula contain a broad spectrum of programming courses, each emphasizing a different aspect of programming.
（50）处是（）
A.notation
B.physical
C.function
D.discipline
E.philosophy
F.softwareengineering
G.characteristics
H.mathematical
I.mathematical
J.program
K.method
L.computer