题目

下列对“验证绿叶在光下制造淀粉”实验的相关描述错误的是（ ） A．将叶片放在酒精中隔水加热是为了脱去叶片中的叶绿素 B．叶片的遮光部分与暴露部分可以形成对照 C．叶片脱色后，滴加碘液，遮光部分变蓝 D．把天竺葵放在暗处一昼夜，是为了将叶片内的淀粉运走耗尽 答案：C根据句意及汉语的提示,补全单词.1. He is _____ (高的) of the two boys.2. Which desert is_____ (大的) in the world?3. Things have gone from bad to _____ (更差).4. The trees can prevent the wind from _____ (刮) the earth away.5.  He jumped twice as _____ (高) as his friend.