主体与导语是怎样一种关系？如何理解主体的任务？

( )是一种用燃烧或电能把加热到熔化或接近熔化状态的金属微粒，喷附在金属制品表面上而形成保护层的一种方法。

A．热镀

B．渗镀

C．电镀

D．喷镀

用所给单词的适当形式填空。

1. The old lady has four          (child).

2. My teacher tells two          (story) in English every day.

3. We want a P.E teacher          (teach) basketball.

4. If you want the job, you need          (work) .late every night.

5. Do you want an interesting and          (excited) job?

阅读理解

     Quickly, the picture comes alive with hyperlinks (超链接), offering the names of the buildings,

towers and street features that appear in the photo. The hyperlinks lead to information about the history,

services and context of all the features in the photo. You have just hyperlinked your reality.

     That might be a little unbelievable, but the technology exists and is no fevered imagination. This is

not a cool small machine invented for the next James Bond movie; this is a working technology just

developed by European researchers. It could be coming to a phone near you, and soon.

     This, as the marketing types say, is a game changer. It develops a completely new interface (界面)

that combines webtechnology with the real world. It is big and fresh, but it goes much further and has

much greater influence.

     The development of the system is most outstanding because image recognition technology has long

been pregnant with promise, but seems to suffer from an unending labour.

     Now MOBVIS has not only developed image recognition,it has also developed more applications

for the technology; and it has adapted it to the world's most popular technology: the mobile phone.

     The MOBVIS system completely rewrites the rules for exploration and interaction with your

physical environment. The system begins with panoramas (一连串景象). These panoramas form the

basis of a city database. It can match buildings, towers, banners and even logos that appear in the

panoramas.

     A user simply takes a picture of the street feature, MOBVIS compares the user's photograph to the

panoramas and then identifies the buildings from the picture you take and the relevant links are returned.

     Then you simply click on the links, using a touchscreen phone, and the MOBVIS system will provide

information on the history, art, architecture or even the menu, if it is a restaurant,of the building in

question.

1. Which is introduced in the passage?

A. A new game software.

B. A popular mobile phone.

C. A cool small machine.

D. An image recognition system.

2. What can we learn about the new technology?

A. It can only be put into use on mobile phones.

B. It is a little unbelievable and just a fevered imagination.

C. It has taken an unending labour to bring the technology into our lives.

D. It will encourage the users to take more pictures of the street features.  

3. What is the right order of the operation of MOBVIS?

a. A city database forms in the system.

b. MOBVIS recognizes the picture and links are returned.

c. A user touches the links on the phone screen.

d. A user takes a picture of the street feature.

e. MOBVIS provides information in question.

A. a, e, c, d, b  

B. a, d, b, c, e

C. d, c, e, a, b  

D. c, a, e, b, d

4. From the passage, we can infer that ________.

A. MOBVIS has already been widely used all over the world

B. the writer is trying to promote the sales of the MOBVIS system

C. this new technology will soon be very popular in our lives

D. the sales of mobile phones will decrease as MOBVIS comes on market

（2012）尼古拉斯实验的曲线图中，在以下哪个区域里，不同相对粗糙度的试验点，分别落在一些与横轴平行的直线上，阻力系数λ与雷诺数无关：（）

A.层流区

B.临界过渡区

C.紊流光滑区

D.紊流粗糙区

简述什么是梨状肌综合征。