题干

类比(比较)是研究物质性质的常用方法之一,可预测许多物质的性质。但类比是相对的,不能违背客观实际。下列各说法中,正确的是(    )

C:IVA族元素氢化物沸点顺序是:GeH4 > SiH4 > CH4;则VA族元素氢化物沸点顺序也是:AsH3 > PH3 > NH3

A:CH4是正四面体结构,SiH4也是正四面体结构

B:NaOH是强电解质,饱和溶液导电能力很强;Ca(OH)2也是强电解质,其饱和溶液导电能力也很强

D:CaCO3与稀硝酸反应生成CO2,CaSO3与稀硝酸反应生成SO2

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A

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How to Be Healthy and Happy

    We all want to be healthy, happy, free of stress and more productive in life.

    ⒈Get enough sleep. It not only keeps you healthy but also you will be happier. It is said that “Early to bed, early to rise makes a man healthy, wealthy and wise.”____

    ⒉Drink plenty of water. ____ The benefits of water are amazing. Water helps keep your skin clear, leaving you feeling happier and better about your body. Water is just simply an amazing source in itself for your overall health. Try to drink 8 glasses a day.

    ⒊Smile and laugh. Don't get sad over small problems or take any joke seriously which hurt you. Instead, if you feel so hurt, you prefer to stay away from that friend. ____ Respect your friend from a good perspective. Smile and laugh all the time and you will be happy.

    ⒋____Help your mom do the dishes, help out your dad in the kitchen, clean your room, or do anything that could help your family. It will not only make them love you more, but you will feel happy knowing you have done good even if you moved out twenty years ago and are a father yourself.

    ⒌Have goals. Always believe you can achieve. If you can dream it, you can achieve it, no matter what. ____ Organization plays a very important role in achieving goals, so organize yourself.

A. Help out your family.

B. Don't get in touch with him/her.

C. So make sure you go to sleep earlier.

D. Of course keep goals and dreams realistic.

E. Water is good for everything in your body.

F. The majority of our body is made up of water.

G. However, don't show him that you don't like him.