完形填空题在高考题中的分值是较高的，是大多数学生考试中的拦路虎。完形填空题在高考英语试题中难度最大、综合性最强，最能考查出学生的语言理解水平和对英语的驾驭能力。完形填空要求考生根据短文中的相关信息，从所给的四个选项中选择最佳选项将短文补充完整。这种题型一方面考查考生对词汇的辨析、搭配等的运用能力;另一方面考查考生对句子结构、短文内容的理解能力以及对信息的综合推断和处理能力。

Eating Potatoes Gives Your Immunes System a Boost

Eating potatoes is not only good for bowel health, but also for the whole immune system, especially when they come in the (51) of a potato salad or eaten cold. In a study on an animal model, researchers in Spain found that pigs (52) with 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 (53).

The general down-regulation of leucocytes (54) by the Spanish researchers suggests an overall beneficial effect, a generally more healthy body. The reduction in leucocyte levels was about 15 percent.Lower lymphocyte levels are also indicative (55) reduced levels of inflammation, but the observed reduction in both lymphocyte density and lymphocyte apoptosis is (56).

In what was the longest study of its (57), pigs were fed RPS over 14 weeks to find out the effect of starch on bowel health. "The use of raw potato starch in this experiment is (58) to simulate the effects of a diet high in resistant starch，” said study leader Jose Francisco Perez at the Universitat Autonoma de Barcelona3，Spain.

Humans do not eat raw potatoes, (59) they do eat a lot of foods that contain resistant starch,such as cold boiled potatoes, legumes, grains, green bananas, pasta and cereals. About 10 percent of the starch (60) by human is resistant starch starch that is not digested in the small intestine and so is shunted into the large intestine (61) it ferments. Starch consumption is thought to reduce the risk of large bowel cancer and may also have an effect (62) irritable bowel syndrome (IBS)4.

Immunology expert Lena Ohman's team previously found that the overall lymphocyte levels do not (63) for IBS patients, but that lymphocytes are transferred from the peripheral blood to the gut,which support the hypothesis of IBS being at least (64) an inflammatory disorder. She says the decrease in lymphocytes observed by the Spanish is therefore interesting, and a (65) of resistant starch may be worth trying in IBS patients.

51 A type B class C manner D form

52 A sent B brought C fed D taken

53 A challenged B considered C delivered D encouraged

54 A caused B observed C participated D covered

55 A of B to C into D in

56 A amusing B frustrating C surprising D charming

57 A shape B way C fashion D kind

58 A designated B designed C discovered D displayed

59 A so B but C since D as

60 A eaten B produced C searched D located

61 A when B which . C why D where

62 A on B onto C under D beneath

63 A choose B value C vary D increase

64 A totally B partially C luckily D pleasantly

65 A role B secret C function D diet