根據(jù)短文內(nèi)容及首字母提示，在答題卡標(biāo)有題號(hào)的橫線上，寫(xiě)出一個(gè)語(yǔ)法上及語(yǔ)義上都正確的單詞。

      In the animal world the colour is very important to nature's animals. Often it can s 

1 their lives.

      Nature is beautiful, and we can see its beauty everywhere. Nature is full of c  2 Plants and animals have many beautiful colours. The colour, h  3 , for animals, is not only beauty. It means life to them because it helps them hide when they meet d 4 

animals.

      One kind of butterfly is orange and black. Birds do not like e 5  them because they have a bad taste. Once a bird eats this kind of butterfly, it remembers the bad taste.

A  6  that, it will never eat another orange and black butterfly!

      Some moths（蛾）use colours to make b  7  afraid of them. A bird can remember the colours or the marks on the moth's body. The bird sees the colours or the marks and doesn't eat the moth!

      One kind of fish can change its colour. The colour is the s  8  as the sea plants or rock around it. O  9  fish can't see it.

      Of course, the chameleon（變色龍）is the most famous because he can change the colour of his body as he walks from a tree to green plants. You can see him t  10  green as you watch.