某研究性学习小组采用盆栽实验，探究土壤干旱对某种植物叶片光合速率的影响。实验开始时土壤水分充足，然后实验组停止浇水，对照组土壤水分条
I didn’t want to drive all the way to New York by myself, so I _____ Anna, my best friend of ten years, to ride with me. A. convinced B. consulted C. adopted D. admitted
--- I forgot what the homework was yesterday, sir. --- . Please do your homework right now. A. I hope so B. You have nothing to do with it C. It'
一个同学使用电流表时，本应使用“+”和“3”两接线柱，但误将“+”和“0.6”两接线柱接入电路，而电流还是从“+”流入，从“0.6”流出，这样做的
绿色化学的核心是反应过程的绿色化，即要求原料物质中的所有原子完全被利用且全部转入期望的产品中，下列过程不符合这一思想的是A．氢气、CO合
We know that many animals do not stay in one place. Birds, fish and other animals move from one place to another at a certain time. They move for different reasons most of them move to find food more
阅读下面的文字 最后一趟生意 (新西兰)吉姆·拉蒙特 (1)漫天的沙尘渐渐退去，蓝天和烈日又一次出现在沙漠上空。 他开着那辆破旧的黄色出
China has many special forms of traditional art, ______ sky lanterns, paper cutting and Chinese clay art. A. such as B. instead of C. except for D. because of
的最大值为 。 