六、短文填空
In nature,you may see many insects and animals of different colours. Have you ever wondered why? Locusts(蝗虫)are super delicious (1) for birds,but it is not always an easy job for birds to catch them. It is (2) because locusts are good jumpers or runners nor because they are smarter than their enemies. The (3) is that the colours of locusts (4) with the colours of crops. When crops are young,locusts look (5). But when autumn comes,locusts change to the yellow and brown colour as crops do.
Brown bears,tigers and other animals move quietly (6) forests. They can't be seen easily by their enemies. This is because they have colours (7) to the trees. For the same reason,polar bears that live on a land of snow and ice are white. Butterflies and bees living among the flowers are (8) like flowers. Soil insects are mostly dark-coloured and they live under the soil(土壤)in a dark and wet (9). However,insects with colours different from plants can easily be found and eaten by others. So in order to (10),they have to hide themselves in the daytime and appear only at night.

1.food 2.neither 3.reason 4.change 5.green 6.through 7.similar 8.colourful 9.environment 10.survive

1. 由常识及“for birds”可知蝗虫是鸟的食物，填food。
2. “neither...nor...”为固定搭配，表“既不……也不……”，填neither。
3. 前文问原因，此处回答“原因是……”，填reason。
4. “change with”表“随……变化”，蝗虫颜色随庄稼变化，填change。
5. 庄稼年轻时是绿色的，蝗虫颜色与之匹配，填green。
6. “through forests”表“穿过森林”，填through。
7. “similar to”表“与……相似”，它们的颜色与树相似，填similar。
8. 蝴蝶和蜜蜂在花中，颜色像花一样鲜艳多彩，填colourful。
9. “dark and wet environment”表“黑暗潮湿的环境”，填environment。
10. 为了生存，它们白天躲藏，填survive。