【正确答案】 C

【答案解析】[听力原文] Brain wave scanners might make it possible to communicate with people who are considered braind-ead, according to a new study reported in the Economist. A couple of recent studies have shown that a small minority of vegetative patients might be more aware than they seem. Now, Damien Cruse, with the Medical Research Council's Cognition and Brain Sciences Unit in Cambridge, UK, thinks EEG machines will be able to help these patients communicate. The team asked 6 healthy volunteers to wear EEG devices, which connect electrodes to a person's head. They were asked to respond to an audible tone by imagining that they were squeezing their fight hands or wiggling the toes of both feet. The researchers found that the volunteers' brain responses were clearly different—the hand-squeezing activated the left-hand side of the brain, and the toe wiggling produced a response in the center of the brain. Then they tested the procedure on a patient with locked-in syndrome, who was always completely paralyzed but retained some control of his fine movements. His brain responses were the same. Finally, they tested the procedure on a patient who had been declared vegetative 2 years earlier. They watched the EEG signals and were able to deduce which movement the patient was imagining. The same team had studied 23 vegetative patients for 4 years and found 4 patients were able to consistently respond to yes-or-no questions by changing their brain activity. They were asked to imagine playing tennis when they wanted to give one response or walking around the house when they wanted to give the other. Since the patients were responsive, they're not technically vegetative, the researchers say. Proof that they can communicate that they're not brain dead would have major implications for family members' and doctors' decisions about their care. What does this talk mainly tell us? 此题为主旨题。文章开篇即点题：脑波扫描可能使得与脑死亡病人交流成为可能。因而答案为C。

【正确答案】 A

【答案解析】[听力原文] For the 6 healthy volunteers, which part of the brain did the hand-squeezing imagination activate? 此题为细节信息题。题目问六名健康的志愿者的攥手的想象激发大脑的哪个部位。根据文章可知实验结果大不相同：攥手激发大脑的左半部，而动脚趾激发大脑的中部。因而答案为A。

【正确答案】 C

【答案解析】[听力原文] Of the 23 vegetative patients, how many were found to be able to consistently respond to yes-or-no questions? 此题为细节信息题。题目问23名植物人病人中，有多少个被发现对问题持续有反应。原文信息是：4 patients were able to consistently respond to yes-or-no questions by changing their brain activity. 因而答案为C。

【正确答案】 B

【答案解析】[听力原文] What can we learn from the study on the patient declaved vegetative 2 years earlier? 此题为细节信息题。题目问从两年前诊断为植物人的实验中我们可以得知什么。根据文章描述，研究者通过EGG装置观察病人，最终得出结论：从技术上讲，这些病人不是真正的植物人。因而答案为B。

【正确答案】 C

【答案解析】[听力原文] When EEG signals indicate that a vegetative patient is responsive, which of the following is NOT true? 此题为细节信息题。题目问当EGG信号表明植物人有反应时，下列哪一个表述不对。通过主旨题与上一小题的解答，我们可以排除选项A和B。文章最后提到这一研究结果对于家属和医生护理有很好的借鉴意义，因而选项D也不是答案。最终答案为C，文章中没提到。