Directions: The following passage will be shown at 50 words a minute. You can change the rate by clicking “Slow” or “Fast”. Choose the best answers to the questions after the passage. You can move the mouse to any of the underlined parts for its meaning in Chinese.

练习说明： 下面的短文将以每分钟50词的速度显示。点击 “Slow” 或 “Fast” 可改变显示速度。选择阅读理解题的最佳答案。你只需将光标移至下划线部分就能显示中文意思。