Ключевые слова: apple, back, background, book, cockle, collection, computer, concept, conch, crawl, education, exam, food, fresh, fruit, hardcover, idea, knowledge, laptop, learn, learning, literature, mollusk, netbook, notebook, nutrition, paper, pc, pile, read, rise, school, science, shell, slug, snail, stack, study, textbook, white, wisdom, yellow,