54. Anger is the natural reaction we experience when we feel threatened o r .\r1 55. Low lighting and soft m u sic the atmosphere in the room.\r1 56. It is highly recommended that old people check their diet against healthy food recommendations and\rwhere necessary.\r1 57. It i s impossible to travel in a vehicle without experiencing some form of vibration.\r1 58. Good presentation is an essential of effective communication, but that is not all一\rclarity of thought, understanding of subject, equal respect for the audience are equally important.\r1 59. The students are immature and curious, so they can hardly resist t h e and indulge in net\rsurfing.\r1 60. Humans a r e with the power to make choices for themselves.
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