听力原文

Their branches provide shelter for a wealth of small and vulnerable creatures, many of them beautifully camouflaged.
他们的枝条为成群弱小敏感身披神奇自然保护色的小生物提供了天然庇护所。
But the ultimate master of disguise has to be the octopus, able to change not only its shape and colour, but its skin texture, too.
然而最终极的伪装者非章鱼莫属。他们不仅能改变外形与颜色，甚至能变化皮肤纹理。

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重点讲解

重点讲解：
1. a wealth of
大量；丰富；
eg. The city boasts a wealth of beautiful churches.
这座城市拥有众多美丽的教堂。
eg. There really is a wealth of unrecognised talent out there.
确实有很多怀才不遇的人。
2. be able tod o sth.
能做到…的；
eg. In her place I wouldn't have been able to resist it.
如果我是她就可能抗拒不了。
eg. Few people nowadays are able to maintain friendships into adulthood.
如今很少有人能将友谊维持到成年。
3. not only...but (also)
不仅……而且；
eg. Not only you but I am to blame.
不仅你，连我都要受责难。
eg. He not only wants to be taken seriously as a musician, but as a poet too.
他不仅希望被人当成一个真正的音乐家，还希望被看成一个诗人。