某有机物A能与NaOH溶液反应，其分子中含有苯环，相对分子质量小_爱下问搜题

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问题填空题

某有机物A能与NaOH溶液反应，其分子中含有苯环，相对分子质量小于150，其中含碳的质量分数为70.6%，氢的质量分数为5.9%，其余为氧。

（1）A的分子式是。

（2）若A能与NaHCO₃溶液反应放出CO₂气体，其结构可能有种。

（3）若A与NaOH溶液在加热时才能较快反应，且1molA消耗1mol NaOH，则A的所有可能的结构简式是。

（4）若A与NaOH溶液在加热时才能较快反应，且1mol A消耗2mol NaOH，则符合条件的A的结构可能有种，其中不能发生银镜反应的物质的结构简式是：。

答案

（共8份）（1） C₈H₈O₂。2分（2） 4 种。

（3） C₆H₅COOCH₃。2分

（4） 4 种，1分 CH₃COOC₆H₅ 。2分

题目分析：（1）根据题意得：n(C)=150×70.6%÷12≈8，n(H) =150×5.9%÷1≈8，n(O) =150×(1-70.6%-5.9%)÷16≈2。故A的分子式是C₈H₈O₂。

（2）A分子中含有苯环，且能与NaHCO₃溶液反应放出CO₂气体，A分子中含有-COOH，综合分析，结构可能有4种。

（3）A与NaOH溶液在加热时才能较快反应，表明分子中含有酯基，其结构简式为C₆H₅COOCH₃。

（4）A与NaOH溶液在加热时才能较快反应，且1mol A消耗2mol NaOH，表明分子中含有酯基，结构可能有4种，不能发生银镜反应的物质的结构简式是CH₃COOC₆H₅。

点评：本题考查的是有机计算和有机物的性质的相关知识，题目难度中，考查学生对基础知识的掌握程度及计算能力。

选择题

“昨夜江边春水生，蒙冲巨舰一毛轻。向来枉费推移力，此日中流自在行。”（宋?朱熹）此诗中包含的哲理正确的有（）

①主观能动性的发挥不受任何因素的制约　②盲目地发挥主观能动性，必然是劳而无获的　　　③主观能动性的发挥受主观因素的制约　　④要正确发挥主观能动性，必须按客观规律办事，从实际出发

A．①④

B．①③

C．②④

D．③④

完形填空

阅读下列短文，并根据所读内容在文章后表格中的空格里填入最恰当的词。注意：每个空格不超过3个单词。
We’ve all been hurt by another person at one time or another. This pain causes problems. It not only causes us to be unhappy, but can ruin relatioships, distract(使分心) us from work and family and other important things, make us unwilling to open up new things.
We need to learn to let go. We need to be able to forgive, so we can move on and be happy. Forgiveness does not mean you erase the past, or forget what has happened. All it means is that you are letting go of the anger and pain, and moving on to a better place.
It’s not easy, but you can learn to do it.
Think about the advantages and disadvanges. Think of all the pro

blems this pain causes you, and realize you need to change. Then th

ink of the benefits of forgiveness—— how it will make you happier, free you from the past and the pain, and improve your relationships and life in general.
Try to put yourself in that person’s situation. Try to understand why the person did what he did. What could he have felt as he did it, and what did he feel afterward? How does he feel now? You aren’t saying what he did is right, but are trying to understand instead.
Understand your responsibility. Try to figure out how you could have been partly responsible for what happened. This isn’t to say you’re taking all the blame, or taking responsibility away from the other person, but to realize that we are not victims but participants in life.
Allow peace to enter y

our life. As you focus on the present, try focusing on your breathing. Imagine each breath going out is the pain and the past, and imagine each breath coming in is peace, entering you and filling you up.
Title: How to let go and forgive

65. _____ caused by being hurt	Making us unhappy; distracting from daily life; Ruining relationships; making us close to new things.
Definition of forgiveness	Letting go of the 66.______ Moving on to a better place.
Benefits of forgiveness	Making you happier; 67.______ from the past and the pain; Improving your relationships and life in general
68._____	Thinking about the advantages and disavantages; Trying to understand the other person as if you were in the same situation； Figuring out 69._____ Allowing peace to enter your life.