2017年職稱英語概括大意精選試題
讀書是最好的.學習。追隨偉大人物的思想,是最富有趣味的一門科學。以下是小編為大家搜索整理的2017年職稱英語概括大意精選試題,希望能給大家帶來幫助!更多精彩內容請及時關注我們應屆畢業生考試網!
概括大意與完成句子(第23~30題,每題1分,共8分)
下面的短文後有兩項測試任務:(1)第23-26題要求從所給的6個選項中為第2-5段每段選擇1個最佳標題;(2)第27-30題要求從所給的6個選項中為每個句子確定1個最佳選項。
The Processes of Immunity
1 Immunity can be defined as the power of an individual to resist or overcome the effects of a particular disease or some other harmful agent. Sometimes the words “immunity” and “resistance” are used interchangeably; but it is more accurate to think of immunity as a process which causes the effect of the invading bacteria to be unable to work before they have had a chance to set up an infection.
2 The chemical processes that produce immunity can be described briefly as follows. Every disease-producing bacterium that enters the body carries within itself a substance.
3 These antibodies destroy the poisonous substance of the disease-producing bacteria, or else act on them in a way that will make the bacteria more sensitive to the action of the white blood cells or other phagocytes. Antigens vary in their chemical structure and specific antigen will stimulate the body to produce only a specific antibody in response to it.
4 The antibody, then, will react only with the kind of antigen that caused its production and no other. This is the reason for the selective nature of immunity so that immunity to one disease does not necessarily cause a person to be immune to another. Indeed, it is possible to have immunity to one disease and sensitivity, its opposite, to a different disease. So it is useful to consider immunity as a selective process. This selective characteristic has a name; specificity.
5 There are two main groups of immunity: inherited immunity and acquired immunity. This second type may be acquired by natural or artificial means. In addition, an acquired immunity may be either active or passive.
graph 2 ________.
graph 3 ________.
graph 4 ________.
graph 5 ________.
Definition of Immunity
Process of Antibodies
Functions of Antibodies
Specific Character of Immunity
Types of Immunity
Functions of Immunity
bodies were produced when _____.
antibody will react only with _____.
main groups of immunity are _____.
ral or artificial means acquire _____.
rited immunity and acquired immunity
antigen is introduced into the body
ired immunity
ified immunity
gens vary in their chemical structure.
kind of antigen that caused its production and no other
答案:ACABBCA
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