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Read the following information on learning. Then answer Questions 22-25. Learning experts agree that some habits help you learn while others hinder your progress. For example, studies done with high school students revealed some interesting data. The studies showed that students did best in their most difficult classes at 11 A.M. Yet math homework was best done at 6:30 PM. At that hour, students dealt best with calculations. When are you at your peak for math? Experts also suggested that breaks in the study routine were important. A 5-minute break every 30 minutes worked well. That means, for example, getting up to stretch, walking around, or taking a drink of water. A different kind of break is important too. That is a break to review what you have studied. If yoe review what you have learned every 10 minutes, you will greatly increase future recall. Of course, reviewing at the end of a week also helps. More good advice from the learning experts: Take care of your body and your mind. Exercising boots the growth of now cells in the part of the brain called the hippocampus. That part of the brain is responsible for memory and learning. Some activities, however, work against the brain. For example, social drinking three or more times a week decreases cognitive, or knowledge gaining, skills. Variety is the spice of life and great for your brain function. Doing puzzles, for example, sharpens analytical skills. Puzzles also improve memory and learning. In addition, occasionally you should try look ing at everyday things differently. Take a different route to work or school. You'll force your brain to use its mapping ability. To stimulate your brain, wear your watch upside down. You'll force yourself to see things differently. 22 | 24 In the first paragraph, calculation means A instructions from the teacher. B answers that are obviously wrong. C exercises while you're studying. D steps in working out the answer to a math problem. Including exercise in your schedule and variety in the way you do things A affect your brain positively. B make you too tired to study. C prevent you from seeing your friends. D guarantee success in your studies. 23 25 The opposite of the word variety (used in the last paragraph) is A mixture B assortment. C diversity D sameness. A major point made by some learning experts is that A most habits hinder your learning. B some habits help you learn while others hinder it. C everyone has the same habits. D the only good habit is to review often