在线学习任务 Online Learning Tasks：

1) Read through the text and understand both the story and the theme

2) Grasp the key words and expressions used in the text

3) Finish all the exercises related to the text

线下学习任务 Off-line Learning Tasks：

1) Recite the new words and expressions in the text

2) Review the text again and memorize paragraph 15 in the text

3) Try to describe the human qualities required for the fight against natural disasters.