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

視覺風格

選項

切換範本

恢復自動保存: ?