世界多极化趋势中，美、日、中、俄以及欧盟五大力量之间的相互关系是[ ] A．相互

患者女，55岁。体重76kg，身高160cm。因多饮、多尿确诊为2型糖尿病，经饮食治疗和运动锻炼，2个月后空腹血糖为8.8mmol/L，餐后2小时血糖13mmol/L。进一步治疗应选择（）

A.加磺脲类降血糖药物

B.加双胍类降血糖药物

C.加胰岛素治疗

D.加口服降血糖药和胰岛素

E.维持原饮食治疗和运动

原始凭证的基本内容包括（）。

A.原始凭证名称

B.填制凭证的日期

C.经济业务内容

D.会计分录

以下哪一种说法不是胸腔积液的描述：

A.无回声见于横膈之上 

B.无回声见于横膈之下 

C.无回声透声清亮 

D.无回声内见分隔，分为小腔

阅读理解

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

Brain-computer interface(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 ceils. 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. help the disabled to recover

C. link the human brain with computers

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 using his mind

D. .By moving his hand.  

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. cap→computer→scalp→wheelchair

D. scalp→cap→computer→wheelchair

4. 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. Robotic Vehicles Could Help to Cure Brain Injuries

D. BCI Could Mean More Freedom for the Disabled

现有一批烧结矿，其TFe分析结果为56.90%，已知TFe标准值为56.50%，如以TFe进行判断，该批烧结矿为（）。

A、一级品

B、二级品

C、出格品