题干

研究有机物一般经过以下几个基本步骤:分离、提纯→确定实验式→确定分子式→确定结构式,以下用于研究有机物的方法错误的是

A:蒸馏常用于分离提纯液态有机混合物

B:燃烧法是研究确定有机物成分的有效方法

C:核磁共振氢谱通常用于分析有机物的相对分子质量

D:对有机物分子红外光谱图的研究有助于确定有机物分子中的官能团

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C

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    If you are hungry, what do you do? Grab a piece of your favorite meal and stay quiet after that?____But it never lets you know, because you keep it busy thinking about your dream lover or favorite star. So it silently serves your needs and never lets itself grow. When mind loses its freedom to grow, creativity gets a full stop.

    ____Now why reading and not watching TV? Because reading has been the most educative tool used by us right from the childhood. Just like that to develop other aspects of our life, we have to get help from reading.

    Once you read a book, you just don't run your eyes through the lines, but even your mind decodes it and explains it to you. ____Now this is unknowingly used by you in your future to develop new ideas. The same seed if used many times, can help you link and relate a lot of things, of which you would have never thought in your wildest dreams!

    This is nothing but creativity. As the number of books you read is increasing, your mind will open up like never before. ____Within no time you start speaking English or any language fluently with your friends or other people and you never seem to run out of the right words at the right time.

    ____ Now what are you waiting for? Go, grab a book, and let me know!

A. Your stomach needs food. Similarly, your mind can feel hungry too.

B. Why not do some reading while you are hungry?

C. A picture is formed in your brain and left there as a seed.

D. So guys do join me and give food for your thoughts by reading, reading and more reading

E. Also this is beneficial to you if you want to enlarge your vocabulary.

F. Reading can help you make more friends, too.

G. It is commonly thought that reading can actually make your hungry mind satisfied.