问题 推断题

A-F和X都是初中化学中的常见物质,其中A、C是无色气体,B是赤铁矿的主要成分,F是红色固体,其中只有D、F为单质,X为蓝色溶液,它们的转化关系如下图所示(部分生成物已省略):

(1)写出几种物质的化学式B       , F          

(2)写出反应①的化学方程式                                            。

(3)写出反应②的化学方程式                                            ,该反应属于       (填写基本反应类型)反应。

答案

(1)Fe2O3  Cu (2)3CO+Fe2O32Fe+3CO(3)Fe+CuSO4==FeSO4+Cu(其他合理答案也给分)置换

题目分析:根据B是赤铁矿的主要成分可知B是氧化铁,综合题干信息及转化关系可知,A是一氧化碳, D是铁,X是铜盐溶液,F是铜,C是二氧化碳,E是碳酸钙;化学反应①表示的是一氧化碳与氧化铁在高温下反应生成铁和二氧化碳的反应,化学反应②表示的是铁与硫酸铜(或氯化铜等的铜盐溶液反应)溶液反应生成硫酸亚铁(氯化亚铁等的亚铁盐溶液)溶液,根据以上信息书写化学议程式,由于②的反应物是一种单质和一种化合物,生成物是另一种单质和另一种化合物,所以该反应属于置换反应。

多项选择题
完形填空

阅读短文,并按照题目要求用英语回答问题。

Many people spend a lot of time making money because they believe the money itself will make them happy, or will guard them against things that will make them unhappy. They make great efforts to achieve that perfect relationship, the perfect house, the beautiful body, the approval of others, all in an attempt to be happy.

Sometimes these things make people happy; other times, people stress over not having reached the goals, or reach them and find they’re still unhappy. Other times, people focus on just one goal and don’t have time for other things that will make them truly happy.

Some experts studying human happiness and the factors that contribute to it have identified several key areas of life that seem to be more related to personal happiness. Some of them are the things like money, friends, health and living conditions; others are things you may not think of in your daily life, such as your neighborhood and sense of meaning in life.

So while setting your goals, remember all of the areas of life that are important to you and find a balanced lifestyle including social support, personal development, physical health and meaningful pursuits(追求) besides career success and financial security. _____________, your attitude about life and the things that happen to you each day can also have a great effect on your level of happiness and life satisfaction. In addition to being optimistic, happy people tend to believe they are the masters of their fate, rather than the victims of circumstance.

 Explore the state of your life, assess how truly happy you are, and find a direction to work toward that will likely bring more happiness. Reach your goals, set new ones and live a life that truly makes you happy.

小题1:What does the first paragraph mainly talk about? (Please answer within 15 words.)

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小题2:Which sentence in the text is closest in meaning to the following one?

It’s impossible for those that stick to one thing only to experience happiness from other things.

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小题3: Fill in the blank in Paragraph 4 with proper words. (Please answer within 5 words.)

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小题4: Do you think money could bring true happiness? Why? (Please answer within 30 words.)

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小题5:Translate the underlined sentence in Paragraph 5 into Chinese.

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