英语四级考试阅读是我们准备的重中之重,相信大家之前也已经做过了不少套题,所以在考前需要把你做过的阅读中出错的部分再重新复习一下,看是词汇语法上的问题,还是解题思路上的问题,把这些出错点谨记于胸,以防考场上再出错。今天文都四六级和大家分享2019年6月英语四级考试阅读:女性敏锐的嗅觉,希望对您有所帮助。

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2019年6月英语四级考试阅读:女性敏锐的嗅觉

Women Pick Up Body Odour Better

Women may be better at sniffing out biologically relevant information from underarm sweat, a US study suggests.

Researchers found it was difficult to mask underarm odour when a woman was doing the smelling, but quite easy to do so when it was a man.

They speculate that a woman s highly attuned smell radar might help her select a mate.

The study, by Philadelphia s Monell Center, appears in Flavour and Fragrance Journal.

In the study, women and men rated the strength of underarm odours, both alone and in conjunction with various fragrances.

The fragrances were selected to test their ability to block underarm odour through a method known as olfactory cross-adaptation.

This occurs when the nose adapts to one odour, and then also becomes less sensitive to a second odour.

Sniffed alone, the underarm odours smelled equally strong to men and women.

But when fragrance was introduced, only two of 32 scents successfully blocked underarm odour when women were doing the smelling.

In contrast,19 fragrances significantly reduced the strength of underarm odour for men.

Lead researcher Dr Charles Wysocki, a behavioural neuroscientist, said: Taken together, our studies indicate that human sweat conveys information that is of particular importance to females.

Not only were women better smellers than men, but male odours were harder to block than female odours.

Underarm odours from the two sexes did not differ in how strong they smelled. However 19% of the fragrances successfully reduced the strength of male underarm odour, compared to over 50% for the female equivalent.

Dr Leslie Knapp, an expert in biological anthropology at the University of Cambridge, said there were good evolutionary reasons why a woman s ability to detect body odours should be more acute could literally be an effective way to sniff out a suitable mate.

She said: Women perhaps need to be more discriminating when they choose who to mate with to produce offspring, as they invest more than males in the reproductive process.

Men don t need to be so choosy,they have lots of sperm, and can reproduce with lots of females, but once a woman reproduces with a partner she is tied up for nine months.

Dr Knapp said there was evidence that odour gave a hint about genetic make-up. She highlighted HLA genes involved in the immune response.

She said in evolutionary terms it was desirable for a women to mate with a man whose genes were different from hers, as this was likely to produce more robust offspring.

以上就是文都四六级小编为大家分享的2019年6月英语四级考试阅读女性敏锐的嗅觉,同学们一定要每天抽出时间来进行复习,文都四六级小编也在这里陪着大家一起加油,更多英语四级考试信息,四级真题模拟,文都四六级考试网在持续更新中~

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