2．Mind control
Imagine looking at something and being able to move it just by using your brain!That is exactly what the new technology called BrainGate can do---with the help of a robotic arm，anyway．
BrainGate is the idea of Professor John Donoghue and his team of researchers at the Brown Institute for Brain Science，USA．BrainGate is attached directly to the brain．First of all，gold wires are put into the part of the brain that controls movement．These are then connected to a small computer chip（芯片）．When the person thinks about different movements，this creates electrical signals，which are picked up by the chip．After this，the signals that are created by the brain are sent back to a computer，which changes the signals into movements．Finally，the computer uses the robotic arm to carry out these movements．BrainGate can already be used to write an e-mail or play computer games，just by brain power．
The technology has already cost millions of dollars to develop and when it is available for use，it will probably cost thousands of dollars per person．There are still many challenges ahead for Donoghue and his team．They are currently planning a mini wireless version，which will allow people to be connected to the
computer at all times．Donoghue also dreams of using this technology to help disabled people who can't move their arms or legs．He plans to connect BrainGate directly to their own paralysed limbs（瘫痪的胳膊或腿）．This will mean that the person can control their own body again，without relying on a robotic arm．
This research is attracting the military's（军方的）attention as well．However，
It is easy to understand why scientists might be concerned about how thought-controlled machines could be used by the military．
32．What does the underlined word"These"in Paragraph 2 refer to？A
A．Wires．
B．Brains．
C．Thoughts．
D．Movements．
33．According to the text，what is one of BrainGate's disadvantages？A
A It is too expensive．
B．It needs improvement．
C．It is difficult to control．
D．It produces few movements．
34．How will Donoghue help disabled people？C
A．By making BrainGate smaller．
B．By developing a wireless version．
C．By attaching BrainGate to their bad limbs．
D．By replacing their limbs with robotic ones．
35．What does the military think of thought-controlled machines？A
A．They could be useful．
B．They could lead to disasters．
C．They would be in mass production．
D．They would face fierce competition．
分析 本文是一篇科教类阅读，属于说明文．文章主要介绍了思想控制器--大脑之门．利用该装置，人们可以通过大脑直接控制机械手臂的运动．
解答 32．A．词义猜测题．根据第二段中的gold wires are put into the part of the brain that controls movement …then connected to a small computer chip可知，首先是把一些金线跟控制运动的那 部分大脑连接，然后再把"这裝线"跟一个小的 电脑芯片连接．故选A．
33．A．推理判断题．根据第三段中的The technology has already cost millions of dollars to develop and when it is available for use，it will probably cost．thousands．of dollars per person 不难看出，该技术十分昂贵，可能会限制它的使用．故选A．
34．C．细节理解题．稂据第三段中的Donoghue also dreams of using this technology to help disabled people who can*t move their arms or legs．He plans to connect BrainGate directly to their own paralysed limbs 可知，Donoghue 打算把 大脑之门直接连接到残疾人瘫痪的四肢上．故选C．
35．A．推理判断题．根据最后一段中的This research is attracting the military's attention as well 及 how thought-controlled machines could be used by the military可推测，军方对思想控制器感兴趣是因为认为它们有用．故选A．
点评 本文是一篇科教类阅读，题目涉及多道主旨大意题，细节理解题，推理判断题．做题时学生应仔细阅读原文，把握文章主要内容，联系文章上下文内容并结合所给选项含义，从中选出正确答案，一定要做到有理有据，切忌胡乱猜测．
