TOEFL IBT. Volume two. Reading.

Test instructions
This section measures your ability to understand academic passages in English. There are three passages in the section. Give yourself 20 minutes to read each passage and answer the questions about it. The entire section will take 60 minutes to complete. You may look back at a passage when answering the questions. You can skip questions and go back to them later as long as there is time remaining. 
Number of questions in the test: 42
You can choose the desired number of questions