Why are the lives of plants not well-known to most people?

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问题 Why are the lives of plants not well-known to most people?
  
Although our lives depend on plants for virtually everything that keeps us alive, their lives remain a secret to most of us. The reason is simple — [11B] plants live on a different time-scale from ours. Although not usually obvious in the relatively hyperactive activities of humans, plants are in constant motion as they develop, search for light and nutrients, avoid predators, exploit neighbors, and reproduce.
    Time-lapse photography allows us to easily see the movements of plants and clearly demonstrates that plants are living organisms capable of some extraordinary things. [12A] Time-lapse photography is done by capturing a series of images at intervals ranging from seconds to hours apart. When the images are viewed in rapid succession, much like a flip book, the effect is to compress into a short period, the changes that occurred over a relatively long period of time. The movies on this site show a variety of plants living out their dynamic lives. While we especially hope this site provides material that may captivate the interest of budding plant biologists, even the seasoned plant biologists will find interesting material. New movies will be added to the site as we make or obtain them. However, since making time-lapse movies requires considerable patience, time, and some luck, the rate at which new movies will appear is unpredictable. [13D]Other educational materials are also becoming available on the site. In the meantime, we hope you enjoy the material that is available now.

选项 A、A series of images are captured at different intervals.
B、Extraordinary things are taken all the time.
C、It takes a relatively long time to take images.
D、The images are viewed very slowly.

答案A

解析 文中提到,Time-lapse photography(慢速摄影)能够使人们很容易地观察植物的活动,而且清晰地表明植物是活的有机体,紧接着后面又提到了慢速摄影主要是capturing a series of images at intervals(在不同的时间间隔抓拍物体的影像),再连续播放(viewed in rapid succession),这样就能展示植物是活的有机体了,故答案为[A]。
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