试题与答案

According to traditional Cherokee beliefs,

题型:填空题

题目:

According to traditional Cherokee beliefs, we are part of (1) . We don’t (2) with it and we’re not trying to (3) it. We are a part of the Great Life. And within the Great Life, there are three great Laws of Nature, which tell us how we have to live in (4) with everything else. The First Law of Nature is that you don’t take any life without real (5) . So we shouldn’t (6) needlessly. We believe everything is alive, including animals, plants and (7) . And so to us, taking the life of a plant is just as grave a 8() as taking the life of an animal. The Second Law is that everything we do should (9) the Great Life. And everything we do (10) the Great Life, and everything that (11) within the Great Life affects us. So it’s very important that what we do will not (12) other parts of the Great Life. The Third Law basically is that we don’t (13) where we live. And where we live is not our (14) , small community. It’s this (15) . We don’t pour chemical (16) down the drain because they all wind up in the water. It might seem a little difficult to live by those three laws in this (17) society. But there are still a lot of things that we can do to bring these laws into our lives, such as (18) , using the (19) as little as possible, and (20) gardening.

答案:

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参考答案:A解析:[知识点] 糖的鉴定

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题型:实验题

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探究一:以下是该小组探究影响H2O2溶液反应速率部分因素的相关实验数据.

实验序号H2O2溶液

浓度%

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51200.1416.75
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⑵ 通过实验①和②对比可知,化学反应速率与               有关;

从实验③和④对比可知,化学反应速率与温度的关系是:                  

⑶ 通过上述实验        (填“能”或“不能”)说明使用MnO2可以加快H2O2溶液反应速率.

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已知:在空气中,温度超过40℃,白磷(化学符号为P)就可以自燃,即和氧气反应生成五氧化二磷。

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⑴请写出白磷与氧气反应的文字或符号表达式                       

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