Requirements are not the ______ of a software system.

puter's design _____ the light of the requirements of customers.

(A) on (B) for (C) in (D) with

his life.

A) across B) throughout C) over D) within

on the computer's design _____ the light of the requirements of customers.

(A) on (B) for (C) in (D) with

A.Production Order

B.Material requirements planning

C.Realtime

D.Direct procurement

A.Vendor master

B.Source list

C.Info record

D.Quota arrangement

By almost any measure , there is a boom in Internet-based instruction . In just a few years , 34 percent of American universities have begun offering some form of distance learning (DL), and among the larger schools , it’s closer to 90 percent . If you doubt the popularity of the trend, you probably haven’t. It enrolls 90,000 student, a statistic used to support its claim to be the largest private university in the country.

While the kinds of instruction offered in these programs will differ, DL usually signifies a course in which the instructions post syllabi(课程大纲), reading assignments , and schedules on Websites , and students send in their assignments by e-mail . Generally speaking, face-to-face communication with an instructor is minimized or eliminated altogether.

According to the passage , distance learning is basically characterized by_____

A) A considerable flexibility in its academic requirements

B) The great diversity of students’ academic backgrounds

C) A minimum or total absence of face-to-face instruction

D) t the casual relationship between students and professors