Distance education is enrollment and study with an educational institution that provides lesson materials prepared in a sequenti

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问题    Distance education is enrollment and study with an educational institution that provides lesson materials prepared in a sequential and logical order for study by students on their own. When each lesson is completed, the student mails or transmits the assigned work to the institution for correction, grading, comment, and subject matter guidance by qualified instructors; Corrected assignments are re turned promptly to the student. This exchange provides a personalized student-teacher relationship. If a student slows his or her pace or fails to send assignments, the school provides encouragement. Al though some institutions provide employment information and assistance, no famous school ever guarantees a job to graduates.
   Distance education and self-study are different. Self-study materials provide no instructional service. Corrected assignments, examinations, and special help provided by a qualified facility are vital to a good learning situation. However. these are not part of self-study. There are many self-study courses and recordings available, and they may have value, but they clearly are not correspondence or distance education courses. Some institutions offer combination courses that provide training-in-residence for students who complete their distance education lessons. In-service or on the-job training is required or provided with other courses and is a feature of many vocational distance education programs.
   Quality distance education institutions screen possible students to assure that only those who can benefit from the courses are enrolled. While there are educational: requirements for some academic subjects ,interest and ability are the primary factors leading to success in most distance education courses. Because they provide alternative educational opportunities, distance education institutions try not to deny a student the opportunity to succeed in a course interest and experience are good indicators of future success.
   Distance education courses vary greatly in scope, level, and length. Some have few lessons and require only weeks to complete, while others have a hundred or more assignments requiring three or four years of conscientious study. Also, a wide variety of subjects is offered. Subjects include yacht de sign, accounting, medical transcription, nutrition, robotics, travel agent training, gun repair, gem identification ,computer programming, catering and cooking, and earning an entire high school diploma ,just to name a few.
   There is an increasing recognition of "distance education" and many colleges offered it for their distance learning courses or accept some distance education credits of resident students working to ward a degree. In fact, many distance education institutions award their own academic degrees. Also, the employing organization may set its own credit acceptance policies.
We can infer from Paragraph 4 that

选项 A、the length of the courses in distance education is shorter than that of college courses.
B、distance education only provides courses of low levels.
C、students need not spend a lot of money on getting a diploma in distance education.
D、students can enjoy a great variety of subjects provided by distance education.

答案D

解析 文章第四段指出远程教育所提供的课程不仅范围、长度和层次各种各样,而且科目也是多样的,文中还列举了很多例子。A与文意不符,文中只是说远程教育中课程学习所需要的时间长短不一,有的才几周,并未说课程学习所需要的时间比大学短。B与文意不符,本段第一句指出远程教育提供各层次的课程。C文章未提及。
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