甲醇的毒性有哪些？

Directions: Complete the following passage by using the words in the box. Each word can only be used once. Note that there is one word more than you need.

personal    B. further     C. aspects    D. tuition      E. degrees F. launch       G. simply    H.created    I. traditional    J. revolutionized

Back in the last century self-study used to mean trying to learn from books. Then as technology moved on, electric products ___小题1:__ the way people learn a language. Audio cassettes enabled people to practice listening, video provided a vivid cultural environment of the languages, computers made interactivity possible, and the __小题2:__ of the Windows 95 operating system opened the door to full multimedia programs that could offer more than what the traditional materials could do.
Today technology has moved on ___小题3:__ . The Internet has served as a communication center. The general use of email has __小题4:__new opportunities for teachers to assist learning at a distance, which has an impact on __小题5:__ learning structures. As you can make more and more progress on your own, the role of the teacher is changing. Basic information and drill can be provided by computer; the teacher is then free to concentrate on the more important ___小题6:__: motivation and production of language in speech or writing.
The latest development is a direct email link from self-study CD-ROMs to an online teacher. Now you can get __小题7:__ one-to-one tuition from any multimedia PC with an internet connection.
When you need more help you __小题8:__ email the tutor. The tutor will know which course you are following and your results to date so he is able to provide good, relevant advice. All you do is to buy the CD-ROM at normal price and then get additional __小题9:__ as you feel the need. So the self-study becomes distance learning with all its advantages of flexibility and low cost.