听力 1. What is the main purpose of forming Left-Handers International? A. To study the job preferences. B. To start the study of hand preference. C. To tell the society that they are normal. 2. At what age do children begin to develop hand preference? A. 6 years old. B. 3 years old. C. 2 years old. 3. What jobs are the left-handers particularly good at? A. Jobs requiring patience. B. Jobs requiring confidence. C. Jobs requiring a good sense of space.