所谓“中间包冶金”的含义是什么？

阅读理解。

     Do you know what couch-potato means? Well, in America, the word is now often used. You see, in

America, many people often spend their free time sitting on a sofa watching TV. As there are many

channels (频道) to choose, the TV can be quite interesting and very addictive (使人上瘾的). One

may sit and watch TV for hours and hours without stop! Well, these people who do nothing all day

except watch TV are called couch-potatoes.

     In America, while watching TV, most often sitting still with eyes looking right into the TV set. Also

because these people are addictive to TV, they don't take exercise and usually get very fat. So in many

ways, these people look like real potatoes! Well, because they look fat, and watch TV on a couch, they

are all called couch-potatoes. Now you know what a couch-potato means. The next time if you see

someone watching TV too long, just say, "What a couch-potato!"

1. The word "couch-potato" is often used in ______.

A. China        

B. America      

C. France    

D. Germany

2. If a person is called a couch-potato, he or she ______.

A. does nothing all day            

B. must be very fat

C. often watches TV in his free time  

D. often listens to music

3. Why does a couch-potato look like a real potato? Because he or she ______.

A. is fat and can't take exercise    

B. likes eating potatoes

C. is fat and round              

D. almost never moves while watching TV and gets fat

4. The passage mainly (主要) tells us ______ .

A. how to watch TV              

B. what couch-potato means

C. why couch-potatoes are very fat  

D. where you can find couch-potatoes

5. Which of the followings do you think may be the writer's suggestion?

A. Never watch TV.                

B. Don't sit on a couch.    

C. Don't watch TV too much.        

D. Don't eat too much

如图所示，a、b、c均为石墨电极，d为碳钢电极， 通电进行电解。假设在电解过程中产生的气体全部逸出，下列说法正确的是

A．甲、乙两烧杯中溶液的pH均保持不变

B．甲烧杯中a的电极反应式为：4OH^――4e^- = O₂↑＋2H₂O

C．当电解一段时间后，将甲、乙两溶液混合，一定会产生蓝色沉淀

D．当b极增重3.2g时，d极产生的气体为2.24L（标准状况下）

以下何种疾病可行脾切除术（）。

A.脾破裂

B.脾动脉瘤

C.遗传性球型红细胞增多症

D.地中海贫血

E.脾囊肿

单位消防安全制度主要包括哪些内容?

分馏法原油稳定装置当原油组分不变时，在一定的温度压力下，原油分馏出的气量也是固定的，轻烃收率与原油处理量的关系是原油处理量（）。

A.越高，轻烃收率越高

B.越低，轻烃收率越低

C.越高，轻烃收率越低

D.不影响轻烃收率