问题 选择题

下面关于动脉血和静脉血的叙述中,正确的是(  )

A.含氧的血是动脉血;含二氧化碳的血是静脉血

B.含营养多的是动脉血;含废物多的是静脉血

C.血色鲜红、含氧较多的是动脉血;血色暗红、含氧量较少的是静脉血

D.干净的血是动脉血;脏的血是静脉血

答案

动脉血是氧气与血红蛋白结合后,含氧气较多,含二氧化碳较少,颜色鲜红的血液;静脉血是氧气与血红蛋白分离,含氧气较少,颜色暗红的血液.动脉血、静脉血的区别主要是含氧量的高低以及颜色是鲜红还是暗红.可见C符合题意.

故选:C

阅读理解

阅读理解。

    Every country has its favorite food. Italians like to eat pizza. Indians like to eat hot food. Japanese like

to eat fish. Often they don't cook it.

   In England, one of the most  popular kinds of food is fish and chips. People usually buy it in a fish and

chip shop. They put it in paper bags, and take it home,  or  to  their workplace. Sometimes they eat it in

the park or on the road. The  world's  favorite  food is American fast food. If you go to some important

cities in the world, you can find people eating hamburgers and chips.

   Fish and chips and Chinese take-away  food are very popular in England. But they are less popular in

the USA, they eat take-away food, too, like chicken. But  the  most  popular kind of take-away food is

the hamburger. It looks like bread with meat in it. Ham (火腿) is a kind of pork, but the hamburger does

not have any pork in it. The beef is inside a kind of cake hamburgers are delicious. They are also popular

in England and Australia.

1. Italians like to eat __________. 

A. dumplings        

B. pizza      

C. hot food          

D. fish

2.Fish and chips are very popular in _____.   

A. England          

B. Australia  

C. the USA          

D. Canada  

3. In different countries people eat ______ food.

A. different          

B. the same  

C. the different      

D. same

4. The hamburger does not have any _____ in it.

A. beef              

B. pork      

C. fish              

D. chips 

5. Hamburger is a kind of ______.    

A. meat              

B. drink    

C. food              

D. Vegetable

填空题