如果存在活跃交易市场，则以重置成本为金融工具的公允价值；否则，采用估值技术确定公允价

阅读理解。

     Since the 1970s, scientists have been searching for ways to link the brain with computers.

Brain-computer interface (界面) (BCI) technology could help people with disabilities send commands

to machines.

     Recently, two researchers, Jose Milan and Michele Tavella from the Federal Polytechnic school in

Lausanne, Switzerland, demonstrated(展示)a small robotic wheelchair directed by a person's thoughts.

     In the laboratory, Tavella operated the wheelchair just by thinking about moving his left or right hand.

He could even talk as he watched the vehicle and guided it with his thoughts.

     "Our brain has billions of nerve cells. These send signals through the spinal cord (脊髓) to the muscles

to give us the ability to move. But spinal cord injuries or other conditions can prevent these weak

electrical signals from reaching the muscles," Tavella says.  "Our system allows disabled people to

communicate with external world and also to control devices."

     The researchers designed a special cap for the user. This head cover picks up the signals from the

scalp(头皮) and sends them to a computer. The computer interprets the signals and commands the

motorized wheelchair. The wheelchair also has two cameras that identify objects in its path. They help

the computer react to commands from the brain.

     Prof. Milan, the team leader, says scientists keep improving the computer software that interprets

brain signals and turns them into simple commands. "The practical possibilities that BCI technology offers

to disabled people can be grouped in two categories: communication, and controlling devices. One

example is this wheelchair."

     He says his team has set two goals. One is testing with real patients, so as to prove that this is a

technology they can benefit from. And the other is to guarantee that they can use the technology over

long periods of time.

1. BCI is a technology that can ______.

A. help to update computer systems      

B. link the human brain with computers

C. help the disabled to recover                

D. control a person's thoughts

2. How did Tavella operate the wheelchair in the laboratory?

A. By controlling his muscles.                

B. By talking to the machine.

C. By moving his hand.                       

D. By using his mind.

3. Which of the following shows the path of the signals described in Paragraph 5?

A. scalp→computer→cap→wheelchair

B. computer→cap→scalp→wheelchair

C. scalp→cap→computer→wheelchair

D. cap→computer→scalp→wheelchair

4. The team will test with real patients to _____.

A. make profits from them          

B. prove the technology useful to them

C. make them live longer            

D. learn about their physical condition

5. Which of the following would be the best title for the text?

A. Switzerland, the BCI Research Center

B. New Findings About How the Human Brain Works

C. BCI Could Mean More Freedom for the Disabled

D. Robotic Vehicles Could Help to Cure Brain Injuries

从21世纪开始，我们已进入了全面建设小康社会、加快推进社会主义现代化的新的发展阶段。全国建设小康社会，最根本的是[ ]

A．确保人民共享经济繁荣成果

B．协调处理经济和社会发展的关系

C．坚持以经济建设为中心，不断解放和发展生产力

D．坚持依法治国和以德治国相结合的治国方略

近年来在裱糊装饰工程中应用最为广泛的一种壁纸是（）。

A.纸基壁纸

B.织物壁纸

C.金属涂布壁纸

D.塑料壁纸

产自蒙古的纯种奶牛每年平均出产400升牛奶；如果蒙古种的牛与欧洲种的牛进行杂交，杂交生出的牛每年平均可出产2700升牛奶。一家国际机构计划通过鼓励推广把蒙古的牛与欧洲种的牛进行杂交来提高蒙古奶牛行业的利润。 以下哪项如果为真，对该机构的计划的可行性提出了最严重的质疑

A．并非所有欧洲种的牛都可以成功地与蒙古本地牛配育。

B．许多年轻的蒙古人认为饲养牛是低等工作，因为养牛的利润比其他可选择的工作低。

C．蒙古的地形适宜放牧本地的牛群，但不适宜种植保持杂交动物健康所需的饲料。

D．牛皮和皮革制品——而非牛奶——是蒙古向欧洲出口的动物产品。

E．许多欧洲种的牛可以取得超过2700升的平均牛奶产量。

我国土地资源总量虽居世界前列，但由于人口众多和地形多样化的原因，土地人均占有量和已利用土地资源中耕地的人均占有量远低于世界平均数。
这段话主要支持了这样一种论点，即我国( )。

A．土地资源丰富

B．土地资源总量居世界前列

C．土地资源相对贫乏

D．土地资源贫乏