51.B 因为：A plant(植物) makes its own food in its leaves .52. B 因为：The green coloring in the leaves uses the water and air to make the food for the plant . It also needs sunshine because a plant can make food only when the sun is shining.53.A 因为：Air gets into the leaves through very small holes（孔）.4. C. 因为：It also needs sunshine because a plant can make food only when the sun is shining.55.C.因为：Animals and people could not live without green plants.
麦兜兜次鱼丸
