25．What is the purpose of the text?

　　A．To give some practical advice.

　　B．To tell an interesting story.

　　C．To introduce a treatment technology.

　　D．To present a research result.

　　答案　C　[推理判断题。本文说明了一项治疗大脑动脉瘤的新技术，所以本文的写作目的是介绍一种新的治疗技术。故选项C正确。]

　　26．What do you know about aneurysms?

　　A．No technologies can treat them nowadays.

　　B．They are deadly wherever they happen.

　　C．Few people die of them every year.

　　D．They may cause severe disabilities.

　　答案　D　[细节理解题。根据第一段中的For survivors，physical disabilities are often severe.They may include...可知，动脉瘤可以造成严重的身体的残疾。故选D。]

　　27．The new technology has the following benefits EXCEPT that ________．

　　A．it is much faster for the patient to recover

　　B．it doesn't cause any pain for the patient

　　C．it reduces the amount of blood loss

　　D．it need not open up the brain to do surgery

　　答案　B　[细节理解题。根据第三段内容可排除A、C、D三个选项。故选B。]

　　28．It can be known from the passage that Beaumont Bacon ________．

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