【判断题】We have used molecular computers to solve more sophisticated problems successfully.10.We have used molecular computers to solve more sophisticated problems successfully.
【单选题】在被子植物体内,起输导水分和无机盐作用的是
【单选题】There is no doubt ____ we will host the 2010 World Expo successfully.
【判断题】We have used molecular computers to solve more sophisticated problems successfully.
【单选题】We start to understand that trading successfully is going to take more time and more knowledge than we______.
【简答题】微分方程是【____(2字)】过程,本专题建模目的是研究【____(2字)】充分长以后过程的变化趋势 --平衡状态,是否【____(2字)】!
【简答题】判断题 (1)海带有根起固定作用,所以它不是藻类植物.______ (2)在植物学中,种皮指果实中子房壁发育成的皮.______ (3)在绿色开花植物体内,运输水分和无机盐的是导管.______ (4)桃树和人体的结构层次组成是一样的______ (5)被子植物的种子比裸子植物的种子得到了更好的保护______.
【单选题】下列关于几种植物的叙述,正确的是
B.
葫芦藓属于苔藓植物,靠茎、叶吸收水分和无机盐
D.
蒲公英属于被子植物,植株矮小是因为体内输导组织不发达
【简答题】被子植物____起输导水分的作用,____起机械支持的作用。