1) Plants need the sunlight to grow. a) true b) false 2) Potato plants have stems called tubers. a) true b) false 3) The plant is fixed in the soil by the help of its roots. a) true b) false 4) Plants need the nitrogen gas to grow a) true b) false 5) Human can make his own food. a) true b) false

排行榜

视觉风格

选项

切换模板

恢复自动保存: