Choose what to eat is no longer as easy as it once was. Our eating habits  1.       

have changed , as have our way of life. And the fuel we need for our      2.        

body is also different. Tradition diets often have too much fat and too     3.        

much calories for the 21^st-century person. If we want to keep up with the  4.       

high pace of modern life, we had better to learn to make the right choices  5.       

about what and how we eat. Because we have so much to choose, many    6.       

companies offer advice about what we should eat. It’s good if we spend our  7.      

time and money in buying food and keep a balanced diet. Instead of eating   8.     

expensive diet or going on unhealthy diets, we can simply try to eat little    9.    

sugar and take more exercise. I hope that everyone keeps a good health.    10.                                          

下列哪项不是慢性贫血患者的特点（）。

A.属正常血容量性贫血

B.红细胞2，3-DPG增高

C.氧离曲线左移

D.部分患者合并全血细胞减少

E.老年人对贫血的耐受能力较差