6. Which of the following is TRUE, according to the first paragraph?A. Everybody knows that some people never use their arms or legs.B. ITis a fact that some people never use their arms or legs.C. To have a good memory, one has to exercise it regularly.D. To keep fit, one should never sit in a chair or a motor car.7. According to this text, poor memory results from.A. bad habitsB. poor healthC. poor educationD. lack of remembering practice8. The writer of this passage seems to advise us to__A. blame ourselves rather than our parents for the poor memoryВ. blame our parents rather than ourselves for the poor memoryC. complain about nothing but our health.D. play tennis to improve our memory