材料作文自选厅

• 出 处: 语文教学与研究
• 发表日期: 2013年36期

红嘴的鸟在印度洋海岛上,有一种红嘴的鸟,它的颜色深浅决定了在异性眼里受欢迎的程度。那些一心想让自己变得更受异性欢迎的鸟,必须调整体内的胡萝卜素。研究表明,胡萝卜素是促使颜色变红的主要原因,但同时也是鸟体内免疫能力不可或缺的重要元素。在异性鸟眼里,深度红嘴的鸟是鸟中精英,因为它有足够的胡萝卜素。尽管生物学家证明有

Red-billed bird On the Indian Ocean island, there is a red-billed bird whose depth of color determines the degree of popularity in the opposite sex. Those who are bent on making themselves more receptive to the opposite sex have to adjust the body’s carotene. Research shows that carotene is the main cause of reddening, but it is also an indispensable element of the bird’s immune system. In the opposite sex bird, the red-billed bird is the bird’s elite because it has enough carotene. Although biologists have proved it