Paragraph One Brush your fingers

Paragraph One Brush your fingers gently across the leaves of the plant, and the leaves instantly fold up like tiny green fingers. The stems droop as if ready to fall off the plant. About ten minutes later, the leaves reopen, and the stems rise again! The unusual behavior of this plant has earned itself other common names, such as the"humble plant" and the "touch-me-not". 36. A s__________house plant.
【正确答案】：strange/ special/ sensitive
【题目解析】：本段介绍了“含羞草”这种植物，其特点是：手指轻轻拂过页面，叶子立刻卷起来。花茎下垂，仿佛要掉落一样。十分钟之后，叶片重新张开，花茎又抬起来。此处提到的特点，提示这是一种非常敏感的植物，因此sensitive一词合适。此外，文中还提到the unusual behavior of this plant，可见这种植物的特点比较少见，因此strange和special也都可以作为植物特点的概括性词汇。