哪位科学家通过实验发现光合作用只有在有光的条件下才能进行：
A．袁隆平
B．范.海尔蒙特
C．希特勒
D．列文.虎克
答案：B
题目分析： 1642年，比利时科学家范·海尔蒙特进行了一项著名的实验。他在一个用铁制成的花盆里栽种了一棵2．3 kg重的柳树。栽种前，花盆里的泥土经过高温烘烤干燥后称重为90．8 kg。以后的5年中，海尔蒙特除了给小树浇水外没有在铁花盆中添加任何物质，每年秋天柳树的落叶也没有称重和计算。5年后，范·海尔蒙特重新将柳树和泥土分开称重，发现柳树的重量变成了76．7 kg，而泥土烘干后的重量为90．7 kg，比原来仅减少了0．1 kg。海尔蒙特宣布，柳树获得的74．4 kg物质包括树干、树皮、树根等只是来源于水。在当时来说，海尔蒙特的实验非常精彩，尽管他对实验结果的部分解释是错误的。他当时不知道，74．4 kg物质除了部分来源于水以外，主要还来源于空气中的二氧化碳。
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| Our thoughts, words, and actions often cause harm to others and to us. Without reconciliation (和解), we cannot deepen our understanding and only cause more suffering."Beginning Anew" is a(n) 1 of reconciliation. It involves three steps-sharing appreciation, expressing 2 , and expressing hurt and difficulties. In the first step, we share appreciation. We acknowledge the 3 qualities of the other person. The second step-expressing regret, is to 4 with the other person our regrets for the things we have done or said that might have caused him or her 5 . This requires humility (谦逊), and the 6 to let go of our own pride. In the third step, we 7 our own hurt with mindful and loving 8 without blaming or criticizing. We speak in such a way that the other person can listen and 9 our words. If we 10 the other person, his heart will 11 and he will not be able to hear us. We ask the other person to help us to understand 12 he has spoken and acted as he has, causing us so much pain. Perhaps, later, he can share his feelings 13 we can understand him more deeply. If a strong 14 arises in us while we are expressing our suffering, we should simply 15 and come back to our breathing until the emotion becomes 16 . The other person can 17 us by following his breathing until we are ready to continue. We can enjoy practicing"Beginning Anew" with our partner, our family, or our friends 18 . By doing this, we will 19 misunderstandings from accumulating. Rather, we will take care of them as they arise, 20 we take care of our children. | ||||
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