问题 单项选择题 A1/A2型题

发生溶血性输血反应时,检验值降低的是()。

A.血浆游离血红蛋白

B.血清总胆红素

C.非结合胆红素

D.血浆结合珠蛋白

E.黄疸指数

答案

参考答案:D

解析:

溶血发生后,血红蛋白从红细胞内释放出来,血浆中的结合珠蛋白及其他蛋白与血红蛋白结合,结合后的血红蛋白由单核-巨噬细胞系统吞噬并降解,这一过程造成血浆结合珠蛋白降低甚至消失。

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Dear Mr Zhu,

I am writing to your magazine’s “Teenagers Now” column(专栏) to ask for some help with my 16-year-old son. At the moment, he refuses to do almost everything his mother and I ask him to do. He is our only child and we treat him very well. His grandparents buy him many things, and yet he is still rude to us. He refuses to spend time with us or do as we tell him. Sometimes he acts as if he doesn’t even love us at all.

Now he refuses to do his homework, and instead insists on wasting his time watching DVDs and listening to foreign music. I cannot understand this music, but I don’t like it. He also spends too much time in Internet cafes, where he either plays games or chats online. He is wasting valuable time during this important period in his life!

What am I to do? At present, to prevent making his mother unhappy with an argument, I am allowing him his freedom. However, I am worried that if I keep allowing him to do what he wants, he may fail at school, or worse.

How can I help my son without harming our relationship?

Yours,

Liu Zhenhua

小题1:What’s Mr. Zhu’s job?

A.A teacher.

B.A magazine columnist.

C.A youth worker.

D.A doctor.小题2:From the passage, we can know that Mr. Liu’s son is _______ to his parents.

A.friendly

B.thankful

C.polite

D.rude小题3:What does Liu Zhenhua write to Mr. Zhu for?

A.To blame his son.

B.To ask for help with his son.

C.To say something about his son.

D.To complain to him about his son.小题4:Mr. Liu’s son always spends his time _______.

A.doing his homework

B.playing games online

C.chatting with his parents

D.doing everything his parents ask him to do小题5:What do you think is the possible answer for the father?

A.The father should let the son alone.

B.The father should give his son a beating.

C.The father should allow his son his freedom.

D.The father should be patient enough to have communication with the son.

填空题