注释：

1.  raw potato starch (RPS)：未经加工的土豆淀粉

2.  The general down-regulation of leucocytes observed by the Spanish researchers suggests an overall beneficial effect, a generally more healthy body.  西班牙研究者们所观察到的全身性下调白血球水平的作用意味着未经加工的土豆淀粉是具有全面的有益的作用的，也就是总的来说身体是更加健康。

3.  Universitat Autonoma de Barcelona是西班牙一个少数民族语---加泰隆语，意为“巴塞罗那自治大学”。这是该大学的原名。

4.  irritable bowel syndrome (IBS)：过敏性肠综合征

5.  Department of Internal Medicine, Goteborg University, Sweden：瑞典哥德堡大学内科医学系

6.  SCI ( Science Citation Index )：科学引文索引。美国科学信息研究所1961年创办出版的引文数据库。

练习：

1.        What a form of potato is the most nutrient to the human body?

A)       Potato soup.

B)        Potato cake.

C)        Potato salad.

D)       Hot boiled potato.

2.        What does the reduction in leucocyte levels in the body mean?

A)       It may mean the reduced levels of inflammation.

B)        It may mean somewhere in the body is inflamed.

C)        It means that the body is challenged.

D)       It means that the body cannot produce leucocytes any more.

3.        For what a purpose did the researchers use raw potato starch in their experiment?

A)       They wanted to observe how the leucocyte levels reduced in the experimental pigs?

B)        They wanted to simulate the effects of a diet high in resistant starch.

C)        They wanted to see how much potato an experimental pig ate every day.

D)       They wanted to see how much body weight each experimental pig gained in the end.

4.        All of the following foods are rich in resistant starch EXCEPT __________.

A)       Pasta

B)        Grains

C)        Legumes

D)       Vegetables

5.        What a kind of starch is resistant starch after all?

A)       It may cause irritable bowel syndrome.

B)        It may bring about at least partially inflammatory disorder.

C)        It may raise leucocyte and lymphocyte levels in the body.

D)       It cannot be digested in the small intestine and ferments in the large intestine.

答案与题解：

1.  C  短文开头第一句就说，“吃土豆有益于肠道健康，而且对整个免疫系统也有益，尤其是吃土豆色拉，喝凉吃”，因此在四个选项中最有营养的非C项莫属。

2.  A  第三段第三句说，“淋巴细胞水平低显示炎症水平下降”，故其它B、C、D三个选项均不正确。

3.  B   第四段第二句引用了研究组负责人自己的话说，“在实验中使用未经加工的土豆淀粉，就是为了模拟富含耐久淀粉的饮食所起的作用”，其它A、C、D三个选项文章均没有提及。

4.  D   第五段第一句列出了一些富含耐久淀粉的食品，其中就没有D项“蔬菜”，而且实际上蔬菜也不是富含淀粉的食物。

5.  D   第五段倒数第二句已经解释了耐久淀粉的特点：“不能在小肠中消化，而是分流到大肠，在大肠中发酵”。其它选项个别词语虽在短文中出现过，但都不是说明耐久淀粉的。