问题 单项选择题 A1型题

类风湿性关节炎较具特异性的自身抗体是()

A.抗IgGFc片段抗体

B.抗双股DNA

C.抗SSA和SSB抗体

D.抗DNA拓扑异构酶抗体

E.抗Sm抗原抗体

答案

参考答案:A

解析:类风湿关节炎较具特异性的自身抗体是抗IgGFc片段抗体,系统性红斑狼疮较具特异性的自身抗体是抗DNA和Sm抗原抗体,口眼干燥综合征较具特异性的自身抗体是抗SSA和SSB抗体,硬皮病较具特异性的自身抗体是抗DNA拓扑异构酶抗体。

阅读理解

If you've been joining in chat room conversations, or trading e-mail with Web pals, you have become one of the millions who write in a peculiarly short form of English.

And you've got a sense of humor about short forms like SOHF(="sense" of humor failure) to describe Internet newcomers who don't understand you.

Across the globe, every night teenagers and their elders are “talking” online—many of them are talking at the same time.

It's fast: try talking to six people at once. It's brief: three or four words per exchange. It takes wit, concentration, and quick fingers.

And it requires tremendous linguistic economy. There's neither time nor space for explanations. Why consume precious key-strokes telling six friends you have to leave for a moment to take care of your little brother when BRB(="be" right back) will do? Want to enter a conversation? Just type PMFJI(="pardon" me for jumping in).  Interested in whom you're talking to? Type A/S/L, the nearly universal request to know your pal's age, sex and location. You may get 15/M/NY as a response from your pal.

If something makes you laugh, say you're OTF(="on" the floor),or LOL(="laughing" out loud),or combine the two into ROTFL(="rolling" on the floor laughing).

And when it's time to get back to work or go to bed, you type GTG(="got" to go) or TTYL(talk to you later).

People want to write as fast as possible, and they want to get their ideas across as quickly as they can. Capital letters are left in the dust, except when expressing emotion, as it takes more time to hold down the “shift” key and capitals. Punctuation is going, too.

小题1:In order to talk to several people at the same time on the Internet_______.

A.you have to speak fast and fluently

B.you have to express your ideas in a brief way

C.you should speak with wit and humor 

D.one should pay much attention to the accuracy of the words小题2:If you get 17/F/NY as an answer to your A/S/L, it means_______.

A.the person on the other end is 17 from New York and he is fine

B.you are talking to a girl who is 17 and lives in New York

C.you are talking to 17 girls who are from New York

D.the person who are talking to you is a 1.7-foot tall New York girl小题3:To save time on the Internet_______.

A.some people leave their letters in the dustbin

B.some people never use “shift” in their writing

C.many people leave the capital and punctuation

D.people seldom use capital letters or punctuation

单项选择题