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  3. 　　Everyone knows that the average human body temperature is 37°C—but everyone is wrong. It turns out that the bodies of people i

　　Everyone knows that the average human body temperature is 37°C—but everyone is wrong. It turns out that the bodies of people i

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问题 　　Everyone knows that the average human body temperature is 37°C—but everyone is wrong. It turns out that the bodies of people in the US have been cooling since the 1860s.
　　Physicians studying body temperature have known for decades that 37°C was too high, says Julie Parsonnet at Stanford University in California, "But they’ve always thought that it was just measurement error in the past, not because temperature had actually dropped."
　　To find out what really happened, Parsonnet and her team combined three data sets. The first set covered nearly 24,000 UnionArmyveterans (老兵) from the American Civil War, whose temperatures were measured between 1860 and 1940. The other two ranged from 1971 to 1975 and from 2007 to 2017. In total, the team analyzed more than 677,000 temperature measurements.
　　On average, US body temperature has declined by 0. 03°C per decade. Body temperatures of men born in the early 19th century were 0.59°C higher than those of men today. Women’s average temperature has dropped by 0.32°C compared with that of women born in the 1890s. That means average body temperature today is about 36.6°C , not 37 C as it is widely thought.
　　The change isn’t simply the result of older thermometers(温度计)being unreliable. We know this because the cooling trend is visible within the more modern data sets, in which the thermometers were probably more accurate.
　　"The most likely explanation in my view is that, microbiologically, we’re very different people than we were," says Parsonnet. People have fewer infections, thanks to vaccines and antibiotics, so our immune systems are less active and our body tissues less inflamed(发炎).
It could be concluded from the passage that_________.
选项 A、we are getting cooler as body temperature falls
B、we are getting warmer as body temperature falls
C、we are getting cooler as body temperature rises
D、we are getting warmer as body temperature rises
答案A
解析 本题考查推理。题干中没有合适的题眼定位，需要考生依据文中的细节进行推理。考生可根据最后一段以及之前做题感知到的内容综合考量。第一题中我们已经得知体温是下降的，故排除C、D选项。文章第四段提到“On average，American body temperature has declined by 0．03℃ per decade．(美国人的体温平均每十年下降0．03℃)”。第五段提到“We know this because the cooling trend is visible within the more modern data sets，in which the thermometers were probably more accurate．(我们明白这一点因为体温下降的趋势在最新的几组数据中非常明显，而获得这些数据的体温计很可能更加准确)”。由此可以得知人体体温呈下降的趋势，我们的人体也就自然而然更凉了，所以选项A “we are getting cooler as body temperature falls．(随着体温下降，我们变得越来越凉)”为正确选项。
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