1、题目关键词：use points, explain, defend

 2、答题要领：

 (1)summarize the strategies used by the passion plant and the potato briefly.

 (2)explain each of the strategies.

 3、听力材料要点：

 (1)The passion plant has physical features that prevent insects from landing on them. Their leaves have hairs all over them that leave no room for insects to land on the leaves.

 (2)The potato uses chemical defense. When insects start to eat the leaves, the plant will react by releasing a kind of chemical that makes the insects feel full and don't want to eat any more.

 4、模板

 (1)In the listening material, the professor discusses two types of defense strategies for plants.

 (2)The first one used by the passion plant is ...

 (3)The second one used by the potato is ...