Color is also used to attract mates（配偶）. Many male birds like the northern cardinal are brightly colored to attract females. Bright feathers can be a sign of how healthy the bird is! Female birds are naturally attracted to healthier males because their offspring will be healthier. Female birds are often less colorful. This helps hide them when they are nesting.

　　Advertising color is also used to warn animals away. The ladybug has bright orange wings with black spots. Its coloring warns meat-eating animals that the ladybug tastes terrible. The striped skunk(臭鼬)has white strips that are a warning to meat-eating animal that they may be in for a nasty surprise if they try to attack.

　　Some animals, like the red-eyed tree frog, may scare predators away with their color. Red-eyed tree frogs sleep during the day. If a meat-eating animal came up to them and they opened their eyes, the bright red color of their eyes might shock the predator long enough to give the red-eyed frog time to hop away to safety!

　　66. The writer wrote his text mainly to tell us__________

　　A. animals and plants use color to either warn or attract animals

　　B. what the accurate definition of the advertising coloration is

　　C. animals use various ways to protect themselves from being attacked

　　D. plants can also use color to keep other animals or plants away

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