人们在装修房子时选购绿色环保建材以减少室内空气污染，属于一种

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问题单项选择题 B型题

人们在装修房子时选购绿色环保建材以减少室内空气污染，属于一种（）

A.日常健康行为

B.避开有害环境行为

C.戒除不良嗜好行为

D.预警行为

E.保健行为

答案

参考答案：B

解析：避开有害环境行为指避免暴露于自然环境和社会环境中有害健康的危险因素，如离开污染环境等。预警行为是指对可能发生的危害健康事件的预防性行为及在事故发生后正确处置的行为，如驾车使用安全带。

单项选择题

室间隔缺损的超声表现错误的是

A．二维超声可见室间隔回声中断
B．二维超声可见缺损断端的“T”形征
C．连续波多普勒可见收缩期高速分流
D．彩色多普勒收缩期可见左向右分流
E．M型超声可见左心室缩小

阅读理解

A		By combing through newly digitized census data from the 19th century, J. David Hacker, a demographic historian from Binghamton University in New York, has recalculated the death toll and increased it by more than 20 percent - to 750,000
B		Called the iBrain , this simple-looking contraption is part of an experiment that aims to allow Dr. Hawking - long paralyzed by amyotrophic lateral sclerosis ,or Lou Gehrig's disease - to communicate by merely thinking.
C		What we wear can affect not only what people think of us, but also the way our brains work, a study involving a doctor's coat shows.
D		What we wear can affect not only what people think of us, but also the way our brains work, a study involving a doctor's coat shows.
E		A Canadian project aimed at creating a genetically engineered pig whose manure would be less harmful to the environment is being halted after failure to find a company willing to bring the animal to market, according to the lead researcher.
F		Scientists have for the first time identified several gene mutations that they say sharply increase the chances of autism, and have found that the risk increases with the age of the parents, particularly the father.