文章內容涉及到馬鈴薯對免疫系統所起的作用的論述。
2. 直接解題。
1 What form(形式，表格，構成) of potato is the most nutrient(最有營養的)to the human(人， 人類的，人的) body(身體，尸體)?
a) Potato soup(湯) .
b) Potato cake(蛋糕).
c) Potato salad(沙拉).
d) Hot(熱的， 辣的) boiled(煮熟的) potato.
1.C. 細節題。 利用問題句中以最高級的形式出現的修飾結構及細節信息結構(the most nutrient， human body)及被選項中的細節信息詞(A： soup; B： cake; C： salad; D： boiled potato)共同作為答案線索， 在文章中查找答案相關句：
(第一段)Eating potatoes is not only(不僅...而且...) good for(對...有益) bowel(腸) health(健康)， but also for the whole(所有的，整個的) immune (免疫的)system(系統)， especially(尤其) when they come(來，出現) in the form of (以...的形式)a potato salad or eaten cold(冷的，不熱情的， 感冒). In a study on an animal model， researchers in Spain found that pigs fed large quantities of raw potato starch (RPS)1 not only had a healthier bowel， but also decreased levels of white blood cells， such as leucocytes and lymphocytes in their blood. White blood cells are produced as a result of inflammation or disease， generally when the body is challenged.
答案相關句說，“吃土豆有益于腸道健康，而且對整個免疫系統也有益，尤其是吃土豆色拉，等土豆涼下來的時候吃”，因此C是答案。
2 What does the reduction in (在...方面的減少)leucocyte(白細胞) levels(水平， 使...水平) in the body mean(意味著)?
a)It may mean the reduced(減少的) levels(水平) of inflammation(炎癥， 怒火).
b)It may mean somewhere(某處) in the body is inflamed(發炎的).
c)It means that the body is challenged(被挑戰).
d) It means that the body cannot (不再...)produce(產生) leucocytes(白細胞) any more.
2. A. 細節題。 利用問題句中的細節信息詞(leucocyte)及被選項中的細節信息詞和修飾詞(A：inflammation， B： inflamed; d： leucocyte)共同作為答案線索，在文章中查找答案相關句：
(第一題答案相關句)Eating potatoes is not only good for bowel health， but also for the whole immune system， especially when they come in the form of a potato salad or eaten cold. In a study on an animal model， researchers in Spain found that pigs fed large quantities of raw potato starch (RPS)1 not only had a healthier bowel， but also decreased levels of white blood cells， such as leucocytes and lymphocytes in their blood. White blood cells are produced as a result of inflammation or disease， generally when the body is challenged.
The general down-regulation(下調)(與問題句中的核心詞reduction詞義相關) of leucocytes observed by the Spanish researchers suggests an overall beneficial effect， a generally more healthy body.2 The reduction in leucocyte (白細胞)levels (這個結構是問題句中的核心結構)was about 15 percent(百分之...). Lower(較低的) lymphocyte levels are also indicative of(顯示) reduced(減少的) levels(水平) of inflammation(炎癥)， but the observed(被觀察到的) reduction in both lymphocyte(淋巴細胞) density(密度) and lymphocyte(淋巴細胞) apoptosis(細胞自然死亡) is surprising(令人感到吃驚的).
答案相關句(第二段第三句)說“淋巴細胞水平低顯示炎癥水平下降”，故其它B、C、D三個選項均不正確。
3 For what purpose(目的) did the researchers(研究者) use raw(沒有加工的) potato starch(淀粉) in their experiment(實驗)?
a) They wanted to (想要)observe(觀察) how the leucocyte(白細胞) levels reduced(減少) in the experimental(實驗的) pigs(豬)?
b) They wanted to simulate(模仿) the effects(影響，結果) of a diet(飲食) high(高的， 高處的，高等的) in resistant(抵抗的， 有抵抗力的) starch(淀粉).
c) They wanted to see(了解，看見) how much (多少)potato an experimental pig (實驗豬)ate(吃) every day(每天).
d) They wanted to see how much body weight (體重)each experimental pig gained(增加，獲得) in the end(最后， 最終).
3.B. 細節題。利用問題句中的細節信息結構(raw potato starch)及被選項中的細節信息詞(A： leucocyte， B： resistant starch; C： experimental pig; D： body weight)共同作為答案線索， 在文章中查找答案相關句：
Eating potatoes is not only good for bowel health， but also for the whole immune system， especially when they come in the form of a potato salad or eaten cold. In a study on an animal model， researchers in Spain found that pigs fed large quantities of raw potato starch (RPS)1 not only had a healthier bowel， but also decreased levels of white blood cells， such as leucocytes and lymphocytes in their blood. White blood cells are produced as a result of inflammation or disease， generally when the body is challenged.