My car just wouldn’t move any further. It was complete | 小题1: |
dead, and I was a few miles far away from anywhere on a cold, | 小题2: |
wet night. I decided walk around a little before accepting I’d | 小题3: |
have to spend the night in the car. Maybe I can find a | 小题4: |
telephone. Actually, I didn’t have to walk far after I | 小题5: |
found a small house standing on a field with a light | 小题6: |
shone from the sitting room. I knocked at the door and | 小题7: |
was very happy when a pleasant old man opened the | 小题8: |
door but listened to my story carefully. He said he didn’t | 小题9: |
have telephone, and there wasn’t one within walking distance. | 小题10: |
Color use in nature | |
___小题1:____ for colors in nature | Many colors are caused by 小题2: which produce most blacks, browns, reds and yellows. |
Other colors exist due to 小题3: , like blue bird’s feathers, which appear blue but actually contain black pigment. | |
Color use in Plants | Flowers have bright hues and patterns to attract insects, and then insects’ moving from one flower to another makes seeds 小题4: . |
Fruits use colors, ripe color for example, to protect and help 小题5: . | |
Color use in animals | Colors help many animals 小题6: their killers. For example, damaging shapes can break up their outline, so an enemy will not recognize them. |
Some animals, like snowshoe hares, 小题7: change colors to camouflage them. | |
Using warning colors to make themselves more小题8: , thus frightening their enemies away. | |
Harmless creatures 小题9: to be those harmful ones to scare off their enemies. | |
Social use in nature | Animals use colors to defend their territories and attract the 小题10: sex. |
© 2017-2019 超级试练试题库,All Rights Reserved.