You have 60 minutes to do 7 passages, so you should be spending 8-9 min/passage. I think a good pace would be to spend about 2.5-3 minutes reading the passage. Don't focus on details or examples, but instead try to extract main points and the author's views. This will give you about 1 minute to read a question, refer back to the passage, and then answer the question. Naturally you'll answer some questions a lot faster than others, but this is a good pace to keep. Don't spend more than 9 minutes on any single passage unless you're very comfortable with every other passage already.