问题 填空题

有科学家提出回收利用C02的构想:将工厂排出的气体(含较多C02)吹入碳酸钾溶液,从溶液中提取出C02,又在合成塔使之变为燃料甲醇(CH3OH).

该技术流程如下:

(说明:吸收池中盛有饱和的K2C03溶液,主要反应为K2C03+H20+C02=2KHC03

下列有关说法错误的是______

A.该方法可以减少碳排放

B.可循环利用的物质A是K2C03

C.分解池中的主要反应属于分解反应

D.合成塔中的主要反应属于化合反应.

答案

A、由题意可知,本方法中将二氧化碳吸收合成了甲醇,所以减少了碳排放.故A说法正确;

B、吸收池中含有碳酸钾,碳酸钾吸收工厂排出的气体中的二氧化碳,生成碳酸氢钾,碳酸氢钾受热分解生成碳酸钾、水、二氧化碳,二氧化碳进入合成塔,分解池中物质又进入吸收池,因为吸收池中含有碳酸钾,所以可循环利用的物质是碳酸钾.故B说法正确;

C、分解池中发生的反应是碳酸氢钾分解生成碳酸钾、水、二氧化碳,所以反应类型属于分解反应.故C说法正确;

D、合成塔中发生的反应是氢气和二氧化碳反应生成甲醇和水,所以不属于化合反应,故D说法错误.

故选D.

阅读理解

根据短文内荞,从短文后的选项中选出能填入空A处的最佳选项。选项中冇两项为多余选项。

Make the right choices

What is life’s greatest gift? 小题1:______ Choice is the ability to select one course of action from a set of alternatives to achieve a goal. What is so great about choice? It transforms us from dumb animals into artists. Each of us becomes another Michelangelo. Choice becomes nothing other than the tool we use to sculpt (雕刻)our life. The tool doesn’t come free, however, for the price of choice is responsibility. 小题2:______ The reward is happiness.

Life is not still. It is a flow. 小题3:______ We constantly need to monitor where we are on

our journey. We need to ask questions: Am I moving closer to my goals? If not, what corrective measures can I take? What action will I take now to readjust myself to my goals? Choice is power. Choice is at the heart of life. It is the creative power of life.

小题4:______ And your life becomes more convenient or comfortable because of them. For example, you decide which stores to shop at and which gas station to go to. But the decisions that we make to sculpt our lives are far more important than deciding where to shop. The more we appreciate the difference between minor and major decisions, the greater the probability that we will experience happiness and fulfillment.

All chess lovers realize that it isn’t necessary to win to enjoy the game. The pleasure is in the playing. Life is like a chess game. 小题5:______

A.It is free will or choice.

B.You have to make choices every day.

C.Make the best moves you can under the circumstances.

D.But when we accept and carry it out, we get a great return.E. Every choice we make leads us closer to or farther from our goals.

F. Life is full of hard choices, and the bigger they are, the harder they get.

G. Choose to carry out responsibilities not because you have to, but because you want to.

单项选择题