There is a difference between the types of articles used in the academic and general reading tests. However, the types of questions and the techniques for answering them are the same. For this reason, I recommend using both types of exam paper for practice.
The main technique for finding answers in both reading tests is the 'keyword' technique: search in the passage for the key words in each question.
Here's a table of keywords from the GT test in Cambridge book 6, page 118: