问题 问答题

何谓Rh血型?有何临床意义?

答案

参考答案:

凡红细胞膜外表面有Rh因子(D抗原)的,称Rh阳性。没有Rh因子则称Rh阴性。无论是Rh阳性或阴性,他们血清中均无先天性抗体。据调查,中国人汉族99%为Rh阳性,1%为Rh阴性;苗族70.6%为Rh阳性,29.4%为Rh阴性。 

主要临床意义: 

(1)与输血有关:Rh阴性的人如果首次输入Rh阳性的血,在Rh抗原刺激下,血清内可出现抗Rh抗体,以后再次输入Rh阳性血时就会产生输血反应。输入次数越多,反应越严重。 

(2)与妊娠有关:Rh阴性妇女如果怀了Rh阳性胎儿。则胎儿红细胞外表面Rh抗原可于分娩时经胎盘进入母体,刺激母体产生抗Rh抗体。当再次怀Rh阳性胎儿时,这种抗体就可进入胎儿体内,引起新生儿溶血性贫血。因此,如果妇女多次怀死胎,或多次婴儿死于黄疸,则应考虑Rh血型不合之可能。

完形填空

第II卷(非选择题 共35分)

第三部分:写作(共两节,满分35分)

第一节: 阅读表达(共5小题;每小题2分,满分10分)

Beauty has always been regarded as something praiseworthy.Almost everyone thinks attractive people are happier and healthier, have better marriages and have more respectable occupations.Personal consultants give them better advice for finding jobs.Even judges are softer on attractive defendants (被告).But in the administrative circle, beauty can become a liability.

Although attractiveness is a positive factor for a man on his way up the administration ladder, it is harmful to a woman.

Handsome male administrators were considered to be more honest than plainer men, though effort and ability were also thought to account for their success .

Attractive female administrators were considered to have less honesty than unattractive ones, and very often their success was believed to be connected not to ability but to factors such as luck.

Why are attractive women not thought to be able? An attractive woman is considered to be more feminine (女性的) and an attractive man more masculine (男性的) than the less attractive woman.Thus an attractive woman has an advantage in traditionally female jobs, but in a traditionally masculine position an attractive woman appears to lack the "masculine" qualities required.   

This is true even in politics."When the only clue is how he or she looks, people treat men and women differently, "says Anne Bowman, who recently published a study on the effects of attractiveness on political candidates.She asked 125 undergraduate students to rank two groups of photographs, one of men and one of women, in order of attractiveness.Then the students were told the photographs were of candidates for political offices.They were asked to rank them again, in the order they would vote for them.   

The results showed that attractive males completely defeated unattractive men, but the women who had been ranked most attractive unchangeably received the fewest votes.

56.What is the main idea of the passage? (no more than 15 words.)

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57.The underlined word “liability” in Paragraph 1 means_____. (no more than 5 words.)

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58.According to this passage, in what jobs do attractive women have their advantages?

(no more than 10 words.)

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59.Why did Anne Bowman carry out the study? (no more than 15 words.)

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60.What is your idea of being an attractive person? (no more than 20 words.)

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单项选择题