试述急性肝衰竭(AHF)的发病基础。_爱下问搜题

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问题问答题

试述急性肝衰竭(AHF)的发病基础。

答案

参考答案：急性肝衰竭(AHF)可在急性和慢性肝病、肝肿瘤、肝外伤、肝脏大手术后，中毒症和其他系统器官衰竭等疾病的过程中发生，如不及时救治，愈合较差。发病基础如下： (1)病毒性肝炎：各型肝炎均可发生AHF，我国以乙型病毒性肝炎最常见。发病时，肝细胞可大量坏死，肝功能严重受损。 (2)化学物质中毒：常见的是药物的毒性损害。肝毒性物质如四氯化碳、黄磷等也可导致AHF。误食毒菌也可造成AHF。 (3)外科疾病：肝巨大恶性肿瘤、严重肝外伤、大型肝脏手术等，均可能发生AHF。 (4)其他：脓毒症、妊娠期急性脂肪肝等也可引起AHFo

填空题

Part 4

Questions 26-45

·Read the following passage and decide which answer best fits each space.
·For questions 26-45, mark one letter A, B, C or D on the Answer Sheet.
Participation (26) high school sports is not a constitutional right. (27) , it is a privilege, paid for by taxpayers, open to students who promise to (28) certain conduct requirements on and off the field. One of these promises is to (29) from using drugs. Drug use is a serious problem among high school students. Studies show that as many as 500, 000 high school students use muscle-pumping, life-destroying substances such as steroids. Many more use illegal drugs, (30) cause discipline problems and (31) the stage for lifelong (32) .
Drug testing works to (33) and identify use. That is why drug testing is required to compete in the Olympics, the National Collegiate Athletic Association and the National Football League. (34) drug testing was instituted by these organizations, use of performance- (35) drugs has been greatly reduced. We should want (36) in schools.
Indeed, many athletes (37) testing programs, and no wonder. Without testing, athletes have to choose between drug use and a competitive disadvantage (38) the field.
Those who challenge the need for drug testing may be forgetting (39) it is like be an adolescent. Peer pressure is enormous, and one of the few effective counter-weights is the fear of being caught. More importantly, once drug use is (40) , a school can (41) to the student before he or she gets addicted or arrested.
For 25 years, public schools (42) by federal judges and civil libertarians, with results everyone can see. It is time (43) decisions on how to run public schools locally (44) officials. There is nothing unconstitutional about asking those who gain the advantages of school-sponsored athletics to contribute to the safety of other players, the integrity of the game and their own well-being. The Supreme Court should leave these programs (45) .

A．support

B．protest against

C．disapprove

D．dislike

单项选择题

以下哪条肌肉不参与肌腱袖的组成：

A．冈上肌

B．冈下肌

C．大圆肌

D．小圆肌

E．肩胛下肌