问题 单项选择题

关于ABO血型系统的叙述,下列哪项是错误的

A.AB型血的血清中含有抗A和抗B抗体
B.AB型血的红细胞上含有A抗原和B抗原
C.A型血的血清中含有抗B抗体
D.B型血的血清中含有抗A抗体
E.O型血的红细胞上不含抗原

答案

参考答案:A

解析:[考点] ABO血型的分型
[分析] ABO血型是根据红细胞膜上是否存在凝集原A与凝集原B而分为四种血型。凡红细胞膜上只有A凝集原的为A型;只有 B凝集原的为B型;A和B两种凝集原都有的为AB型;两种凝集原都没有的为O型。不同血型的人的血清中所含的凝集素不同,但所含的凝集素都是不能对抗自身红细胞凝集原的。在A型血的血清中只含抗B凝集素;B型血的血清中只含抗A凝集素;AB型血清中一般没有抗A和抗B凝集素;O型血的血清中则抗A和抗B凝集素都有。

阅读理解

   Gao Xiaosong, who is a famous musician, movie director and the writer of the famous song My Deskmate,

has been sent to jail (监狱) and will stay there for six months for drunk driving.

   "I've nothing to say for myself and I'm willing to be punished (惩罚)," he said when he was standing in the

court. "What I want to say is that I feel sorry for what I've done. I thought alcohol (酒精) could bring me

freedom but never realized drunk driving could take away others' freedom. And now I've lost my own freedom

because of drinking. I'll obey the new road safety rules and I want to be a life-long volunteer in persuading

(劝说) others not to drive after drinking."

   Anyone who drives after drinking doesn't think much of human life. If Gao had cared, he would have left his

car parked outside the restaurant and took a taxi home, and he would have thought about a road killer he would

become. It's fair to say that his behavior can not be excused in modern society. Gao may not have killed anyone, but by choosing to drive a car while under the influence of alcohol, he and the large number of others who do

the same have made the dangerous decision that may possibly hurt other people.

1. What was the reason for Gao Xiaosong's being jailed for six months?

   ________________________________________________________

2. How did he feel for what he had done?

   ________________________________________________________

3. Did he think he was wrong?

   ________________________________________________________

4. If one drives after drinking, what may happen?

    _______________________________________________________

5. What's your idea after reading this passage?

   ________________________________________________________

选择题