Book excerpt: What summer month has no major holidays? Which Australian critters live on eucalyptus leaves? In connection with Mensa, renowned author Helene Hovanec--the creator of 38 kids' puzzle books--gives children a pleasurable brain workout with some challenging kid-centered trivia. It's absolutely fun to see if you know the answers to questions such as: Which kind of test is given to determine if somone is telling the truth? Which hero from children's literature traveled to a land called Lilliput? Some quizzes are multiple choice, while others simply ask the questions or feature fill-ins, and the subjects range from art to music, sports to food, with many categories in-between.