阅读下面短文，掌握其大意，然后从方框中选出能填入文中空白处的最合适的单词，注意，其中有两个多余选项。

A. color     B. bones   C. shape     D. cells     E. hide     F. dangerous G. change   H. go     I. reflect     J. another   K. odd     L. amazing

Octopuses are masters on disguise (伪装). They can change their appearance in less than a second.

How do they do this? An octopus can disguise itself in three ways. One is by using 【小题1】. An octopus's skin has special 【小题2】 called chromatophores. These cells are filled with yellow, brown, and red pigment (色素). When an octopus moves its muscles in a certain way, the cells produce colorful spots on its skin. Chromatophores can also 【小题3】 light. In blue light, for example, an octopus's skin will look blue. An octopus can also change its skin texture (皮肤结构). When the octopus moves its muscles, its skin can 【小题4】 unsmooth. It might then look like a plant, or coral. And 【小题5】 way an octopus disguises itself is by changing its 【小题6】. Some, for example, roll their bodies into balls so they look like rocks. One type of octopus can change its form to look like other sea creatures — especially 【小题7】 ones, such as sea snakes.

Why are octopuses so good at disguising themselves? They have to be. The ocean is not a safe place for them. Because they have no 【小题8】 in their bodies, octopuses are like large pieces of meat. Many predators (捕食者) want to eat them — and they can eat them whole. To survive, octopuses have developed the 【小题9】 ability to change their appearance very quickly in order to 【小题10】 from predators.