Thanks to today's technology,   (52)     for us to learn something new. With a computer connected to the Internet, you can start a course right away. You can take courses at any place and any time you want. It's also a great chance to be classmates with people from different countries.
    There are hundreds of courses with different subjects provided online for people to learn. In fact,   (53)     it might be difficult to decide which one is the best for you. Here are two popular learning platforms that you must visit:
 Coursera
      As one of the biggest online platforms, Coursera works with many famous schools and teachers around the world. It has more than 2,000 courses on its platform. Though you don't have much money, you can still find some courses that are   (54)    .
 Khan Academy
      Khan Academy is a great online platform for students to watch all kinds of video lessons on, for example, math, science, sports,or languages.   (55)     by watching interesting videos and doing exercises. And best of all, the video lessons are all FREE!

 technology科技 connect連接 course 課程 provide提供 platform平臺
52.
(A) school is just a place
(B) school is the best place
(C) school is not only the place
(D) school is the only place