In the past, going to a piano teacher was the only way to learn how to play the piano. You could have one lesson a week. If you didn't have private(个人的) lessons, you could still learn piano, but you would have to learn it by yourself. This was easy for some, but very difficult for most. However, with technology as it is today, there is at last another way that you can take piano lessons. You can take an online course.
    An online course can save you lots of money. If a private lesson costs 30 or 40 dollars per week, just think about how quickly that adds up. You can take a complete online course in piano by spending a small part of the money that you would pay for taking weeks of private lessons. Also, private lessons are only usually one hour per week. If you have questions during the rest of the week, or if you forget something that your teacher said, you will have to wait for your next lesson to continue your learning. However, online piano courses are quite different.
     With an online piano course, you can work at your own pace(进度). You can also take as many lessons per week as you'd want, or go back and listen to your last lesson if you have forgotten anything. Most adults who want to learn how to play the piano enjoy being able to go back and listen to lessons they watched before. It can give you a good idea of what you were doing right, what you were doing wrong, and what you should be doing before the next lesson.
    Of course, if you need someone to sit beside you and give you instant feedback(及时反馈) while you are playing, you are not suggested to choose an online course. But most adult learners think they can get their own type of feedback by watching the course again and again.

阅读理解

       A man may usually be known by the books he reads as well as by the company he keeps.One should always live in the best company，whether it is of books or of men.

       A good book may be among the best of friends.It is the most patient and cheerful of companions.It always receives us with the same kindness，amusing and instructing us in youth， and comforting us in age.

       Men often discover their similarity to each other by the common love they have for a book just as two people sometimes discover a friend by the admiration which both entertain for a third.There is an old proverb，“Love me，love my dog.” But there is more wisdom in this：“Love me，love my book.” The book is a truer and higher bond (纽带) of union.Men can think，feel，and sympathize with each other through their favorite author.They_live_in_him_together，and_he_in_them.

       A good book is often the best container of a life preserving the best that life could think out，for the world of a man’s life is，for the most part，the world of his thoughts.Thus the best books are treasures of good words and the golden thoughts，which become our steady companions and comforters.

       Books are by far the most lasting products of human effort.Temples and statues decay (腐朽)，but good books survive.Time is of no account with great thoughts，which are as fresh today as when they first passed through their author’s minds ages ago.

     The great and good do not die，even in this world.Preserved in books，their spirits walked abroad.The book is a living voice.It is an intellect (智者) to which one still listens.

王夫之指出：“封建毁而选举行，守令袭诸侯之权，刺史牧督司方伯之任，虽有元德显功，而无所庇其不令之子孙。”这主要是说（    ）