Question

3．Different vitamins are found in different foods．Then which foods should be eaten to keep us healthy？Let's look at some important vitamins for the answer．

Vitamin A helps to protect skin from becoming dry．It is also helpful to the eyes．Without vitamin A，you cannot see well in darkness．Vitamin A is found in animal liver and yellow part of eggs．Sweet potatoes，carrots and other dark colored fruit and vegetables have something that the body can change into vitamin A．

Vitamin B changes foods into energy and helps the heart and nervous system（神经系统） to work smoothly．Without it，we will be weak and will not grow．It is found in grains and other foods like beans，nuts，meat and fish． Vitamin B helps to produce red blood cells．It is found in foods like eggs，meat，fish，milk and green leafy vegetables．

Vitamin C is needed for strong bones and teeth，and for healthy blood vessels（血管）．It also helps wounds to heal（意合） quickly．The body stores little vitamin C，so we must get it in foods like oranges，and cabbage．

Vitamin D increases the levels of calcium（钙） in the blood．Calcium is needed for verve and muscle（肌肉） cells to work normally，as well as to build strong bones．Fish liver oil has vitamin D．In some countries，milk producers add vitamin D to milk so that it will be good for children．

36．WithoutA，We cannot see will in darkness．
A．vitamin A      
B．vitamin B       
C．vitamin C       
D．vitamin D
37．According to the passage，vitamin B can be found inB．
A．fish liver oil                                
B．grains，meat and fish
C．milk and vegetables                     
D．animal liver and eggs
38．From the passage，we know that vitamin C is good forC．
A．the skin                                      
B．the heart
C．blood vessels                               
D．nerve and muscles
39．Some milk producers add vitamin D to milk mainly to help children toC．
A．have good eyesight                             
B．produce blood cells
C．get enough calcium                             
D．heal wounds quickly
40．According to the passage above，which of the following is"TRUE"？D
A．We can get vitamins from everything．
B．We can live healthily with few vitamins
C．Vitamins are not important to our health．
D．Different vitamins can help us in different ways．

Answer 1

分析 不同的食物中会发现不同的维生素，我们应该吃哪些食物来保持健康呢？文中重点介绍维生素A、维生素B、维生素C和维生素D对人体保健的作用．

解答 36．答案：A．细节理解题，根据Without vitamin A，you cannot see well in darkness．可知：缺少维生素A，你就不能在黑暗中看得很清楚．故选：A．
37．答案：B．细节理解题，根据It is found in grains and other foods like beans，nuts，meat and fish．可知：维生素B可以在谷物和其他食物，如豆类，坚果，肉类和鱼类中找到．故选：B．
38．答案：C．细节理解题，根据Vitamin C is needed for strong bones and teeth，and for healthy blood vessels（血管）．可知：维生素C对我们血管有好处．故选：C．
39．答案：C．细节理解题，根据 Vitamin D increases the levels of calcium（钙） in the blood．Calcium is needed for verve and muscle（肌肉） cells to work normally，as well as to build strong bones．可知：维生素D可以帮助孩子得到足够的钙．故选：C．
40．答案：D．推理判断题，根据（1）Vitamin A helps to protect skin from becoming dry．（2）Vitamin B changes foods into energy and helps the heart and nervous system（神经系统） to work smoothly．（3）Vitamin C is needed for strong bones and teeth，and for healthy blood vessels（血管）．（4）Vitamin D increases the levels of calcium（钙） in the blood．Calcium is needed for verve and muscle（肌肉） cells to work normally，as well as to build strong bones．由此可以推断出：不同的维生素在不同的方面帮助我们．故选：D．

点评 首先通读全文，了解文章大意，然后弄清题干意思，对照短文信息确定正确答案．