问题 单项选择题

关于类风湿因子(RF)叙述错误的是()。

A.以IgG-RF为主要类型

B.高滴度提示病情活动、预后不良

C.阳性可见于肝炎、结核、感染性心内膜炎患者

D.RF阳性是类风湿关节炎诊断标准之一

E.干燥综合征患者可以出现RF阳性

答案

参考答案:A

解析:类风湿因子是一种以变性IgG分子的Fc段为靶抗原的自身抗体。按免疫球蛋白类型IgM、IgG、IgA、IgE、IgD五类,其中IgM-RF为主要类型。其滴度与病情活动、预后相关。RF阳性是类风湿关节炎诊断标准之一,其阳性还可见系统性红斑狼疮、干燥综合征、系统性硬化病等风湿性疾病和部分感染性疾病,如肝炎、结核、感染性心内膜炎等。

阅读理解

The day before the deadline for this article,I had no clue what I was going to write about. I took my problem to the editor-in-chief, and.he said to me:“Don’t worry; you’re creative. ”

I’m not sure where the editor-in-chief reached the conclusion that I was “creative”. Maybe it was through the poems I wrote. Personally, I simply enjoy writing because it’s fun. There’s also the fact that I can’t draw or do anything else creatively, I’m equally sure that there are people in the boat on the other side who can make things look excellent, but can’t write a poem.

At this point you probably want to ask me what poetry and art have to do with engineering.  For one, it makes you a more rounded person, making you a better engineer. More importantly, as an engineer, you will be faced with many problems every day. There are some that can be solved by consulting a textbook, but more often than not, you will need that thing in your brain to put together things in a completely original combination to solve the problem at hand.

Think of the wonderful things that creative engineers have done. Civil engineers have made the road more long-lasting so we don’t have to close them for repairs as often. Coming up with a new innovation (创新) is similar to writing a good poem. It’s not some-thing you plan to do. The critical moment comes unexpectedly in the middle of nowhere. You don’t think about what you’re doing, you simply do. After some mad struggling you take a look at the end product and say to yourself, “This is a masterpiece. ” This is perhaps the greatest personal satisfaction one can

experience.

So all you engineers out there get out and do something creative. I don’t care if it’s writing a poem or a computer program, just be natural and do something creative.

小题1:This passage mainly deals with        .

A.the creativity of engineers

B.the power of editor-in-chief

C.engineering in general

D.a way of thinking小题2:In the author’s opinion, writing poems can        .

A.show one is creative

B.make him happy

C.bring him in lots of money

D.have an effect on one’s mental health小题3: According to the author, art can help an engineer to        .

A.find the solutions to problems

B.learn to write poetry

C.be courageous in face of challenges

D.get along well with others小题4:Coming up with a new innovation is similar to writing a good poem in that both are      .

A.logically developed

B.strictly planned

C.experience- based

D.naturally creative小题5:The greatest personal satisfaction of an engineer comes from      .

A.planning his work successfully

B.building things quickly

C.finishing his work innovatively

D.writing good poems naturally

多项选择题