填空题
The Pitman Shorthand System

● Distance learning was called 1 courses more than 150 years ago.
● Pitman began teaching the courses of 2 by mail with the development of a reliable postal system in 1840.
● This idea was introduced to the U. S. and adapted to 3 languages.
The Open University

● It was established in 4 and offered courses through mail.
● Each student had a 5 to help them with the course work.
● It develops fast and offers the courses using the Internet, 6 , satellite broadcast and email.
● It is now Britain"s largest 7 , with more than 200,000 people studying its courses every year.
John Hendricks and the Discovery Channel

● Discovery Channel is the first cable TV channel exclusively devoted to 8 and nature programmers in June 1985.
● The company"s programmes now reach over 150 million subscribers in more than 9 countries. And the Discovery Channel"s 10 , educational approach proves that TV is not just about mindless entertainment.