- Before you leave the classroom ,please __the lights.
- —Which do you like ______, tea or coffee?—A cup of tea, please.
- There are few _______in the fridge. Let ’s go and buy some peas ,carrots and cabbages.
- I usually walk to school, but ____ bus when it rains.
- 根尖结构中吸收水分的主要部位是()
- Whose eraser is this?--It's ________.
- 参天大树的根部吸收的水,能够达到树冠的顶部,主要的动力来自()
- 对于植物繁衍后代来说,花中最重要的结构是()
- 在研究植物光合作用产物的实验中,把天竺葵放到黑暗处一昼夜的目的是()
- 下列能正确表示光合作用的公式是()
置顶