8．The text probably comes from________.

　　A．a guidebook

　　B．a book review

　　C．a medical magazine

　　D．an official document

　　解析：选C　文章出处题。文章主要介绍了中暑以及中暑后如何急救的相关知识，故有可能选自一本医学杂志，即C项正确。

　　C

　　(2016·东城区综合练习二)Small seating in the economy­class (经济舱) sections of airplanes is not just uncomfortable but potentially life­threatening. Space has become so tight that passengers cannot protect themselves in the event of a crash.

　　A report on a long distance flight from the doctors of Vienna stated that only 10% in economy class could adopt the recommended brace position on the plane?s safety tips in case of emergency, and they were the smallest of the group. And 30% of their fellow passengers traveling in first class could adopt the position, which is internationally recognized as improving the chances of survival in the event of a crash. The authors of the report are now calling for greater space between seat rows to increase safety.

　　A spokesman for British Airways (BA), which is responsible for safety on all British planes, opposed the idea that small seating was a threat (威胁) to passengers. “We don’t think it is a safety matter，” he said, “We have high safety standards and all UK aircraft meet them.” In the past month, both British Airways and Virgin Atlantic introduced sleeper seats, stressing the outstanding comfort in the front of the planes. But that space gained is space lost in economy.

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