Isha,
Reading articles is not so easy if you are honest in reading.Am I right?
Reading article does not mean that you have to read every word slowly. You may read like a newspaper and go quickly through contents. In this headings and subheadings are useful. If you find an article interesting, you may read again thoroughly and slowly but without earning points.
However, there is limit to points on articles. You get only one point for an article in your entire life. If you read all articles in a month, you will earn nothing in next month.
I may suggest that read quickly but sincerely the articles in first attempt. Then read again the more interesting and useful articles and add your comments also on which there are points.