The Critical Reading (formerly Verbal) section of the SAT is made up of three scored sections: two 25-minute sections and one 20-minute section, with varying types of questions, including sentence completions and questions about short and long reading passages. Critical Reading sections normally begin with 5 to 8 sentence completion questions; the remainder of the questions are focused on the reading passages. Sentence completions generally test the student's vocabulary and understanding of sentence structure and organization by requiring the student to select one or two words that best complete a given sentence. The bulk of the Critical Reading questions is made up of questions regarding reading passages, in which students read short excerpts on social sciences, humanities, physical sciences, or personal narratives and answer questions based on the passage. Certain sections contain passages asking the student to compare two related passages; generally, these consist of shorter reading passages. The number of questions about each passage is proportional to the length of the passage. Unlike in the Mathematics section, where questions go in the order of difficulty, questions in the Critical Reading section go in the order of the passage. Overall, question sets towards the beginning of the section are easier, and question sets towards the end of the section are harder.