下列疾病可引起双侧睑下垂的是（） A.蛛网膜下腔出血 B.白喉 C.脑脓肿 D.重症

中国金融期货交易所5年期国债期货合约的最小变动价位是（）。

A.0.01元

B.0.005元

C.0.002元

D.0.001元

流行病学的研究可分为（）。

A.描述性研究、分析性研究和数学模型研究

B.观察性研究、实验性研究和数学模型研究

C.描述性研究、观察性研究和分析性研究

D.观察性研究、描述性研究和实验性研究

E.观察性研究、分析性研究和数学模型研究

背景

某民用机场，跑道磁方位角为9°，基准飞行场地长度为3200m，跑道道面宽45m，飞行区指标Ⅱ为E。该机场设计跑道南端为Ⅰ类精密进近灯光系统，跑道上设置了跑道中线灯、接地带灯、跑道入口识别灯、入口翼排灯、停止道灯，航站楼面积为5000m2。

问题

(1)确定跑道两端的识别号码，写出该机场的飞行区指标。

(2)指出跑道灯光设置中的问题，并说明原因。

(3)该机场南端实施仪表着陆系统，航向天线、下滑天线应如何布置?

阅读理解。

     I credit my typing skills to so many hours of chatting online. Unfortunately, as my typing speed increased

on the Internet, all grammatical rules went out of the window. You see, instant messengers have their own

shorthand language and grammar isn't important, of which even a newbie (新手) is aware. They can leave

out articles, subjects, pronouns, etc. They can misspell or "re-spell" almost any word. They often ask "A/S/L"

when they first chat. Abbreviations and capitalizations are particularly important. English-speaking instant

messengers also refuse to burden themselves with punctuation and capitalization.

     After I came back China, I discovered not one but two instant messaging crazes. The first, which brought

back memories of my previous addiction to the computer, was QQ. I can see evidence that the Chinese have

the same kind of separate instant messaging language, even when they chat in English. My first word in this

language, for example, was "ft". This abbreviation for"faint" is used whenever there is a need to express

surprise. I also discovered that the Chinese use the same kind of abbreviation for a laugh. And there is an

extraordinary number of smileys and icons available to express every emotion and reaction, from the traditional

"sleepy" and"doubtful" smileys to the "vomit" and "army soldier" smileys. There's even a SARS smiley.

     After QQ, there is another, perhaps more widespread, messaging trend. You guessed it-cell phone text

messaging. I now understand how useful text messaging is and why it is so common. I admit that I have been

guilty of sending text messages while walking outside or sitting on the subway. Who hasn't? No matter where

I go, I see people on their cell phones, messaging. In fact, it's rare to see someone actually talking on their

phone!

     So it looks as if there's no escape from the instant messaging crazes, no matter where in the world I go.

And that's plainly not going to change. In the end, though, I can't complain: instant messaging is quick, it's

cheap, it's easy and it's extreme fun too. And after all, everybody's doing it.

1. The underlined phrase "went out of the window" in Paragraph 1 probably means ____.

A. increased

B. occurred

C. disappeared

D. changed

2. Which of the following is TRUE according to the passage?

A. Grammar and correct spelling are very important while chatting online.

B. There are enough smileys and icons to express yourselves while chatting online.

C. The writer is skilled at typing and once was addicted to online games.

D. It is impolite to leave out some unimportant words or letters while chatting online.

2. The writer believes that instant messaging is ____.

A. full of fun but time-consuming

B. widespread but unnecessary

C. quick but difficult to do

D. common, useful and cheap

3. The writer believes that instant messaging is ____.

A. full of fun but time-consuming

B. widespread but unnecessary

C. quick but difficult to do

D. common, useful and cheap

4. Which might be the main idea of the passage?

A. Who can escape QQ and cell phone text messaging?

B. Why is instant messaging so popular?

C. Chatting online is good for your typing skills.

D. Chatting on QQ is natural for people.

白煮肉类也叫白烧、白切