2. 外语
  3. By "some people" I mean me. Why is it that an evening stroll leaves me feeling eaten alive while my companions are left blissful

By "some people" I mean me. Why is it that an evening stroll leaves me feeling eaten alive while my companions are left blissful

admin2014-12-31  11
问题     By "some people" I mean me. Why is it that an evening stroll leaves me feeling eaten alive while my companions are left blissfully un-bitten?
    Studies suggest that about 20 percent of people are "high attractor types" who are especially appealing to the female mosquitoes seeking out blood for the extra protein they need to lay eggs. Of course, not all mosquitoes are the same. But let’ s consider some of the more general properties that affect your mosquito appeal.
    Clothing Color
    It’s true, mosquitoes have discerning fashion taste. Or at least, they’re more likely to spot you as a target if you stand out from your environment. Dark colors, especially, will attract more of the insect.
    Body Heat
    Visual clues allow the mosquito to locate you from relatively far away, but as she approaches, it’s your body heat that draws her in. This puts pregnant women, who average about 1.26 degrees Fahrenheit warmer than others, at a particular risk—a fact which has been substantiated by a number of studies.
    Carbon Dioxide
    This is another reason pregnant women are at a disadvantage. Mosquitoes can detect carbon dioxide using a special organ called a maxillary palp from as far as 164 feet away. Unfortunately for mothers-to-be, pregnancy causes women to emit 21 percent more CO2. This is also why kids are often safe from bites, when bigger, more CO2-emitting adults are around.
    Alcohol Intake
    On the flip side, pregnant women are(presumably)avoiding another mosquito attractor: alcohol. Although it’ s unclear how mosquitoes go about detecting the presence of ethanol, studies show that drinking even just 12 ounces of beer will significantly increase the attention you receive from the pests.
    The Properties of Your Skin and Sweat
    Up to 85 percent of your susceptibility to mosquito bites has nothing to do with what you’ re drinking, wearing or how much heat your body emits—it’ s just genetic. Specifically, the composition of your skin bacteria—the kind that naturally and healthily exists there—can serve as an attractor.
    Blood Type
    Another factor you can’t control? Your blood type. And it stands to reason that, if the mosquito is there to suck your blood, she cares what kind she’s getting. People with blood type O are more prone to mosquito bites than those with type B, with type A folks bringing up the rear.
What is NOT the reason why the pregnant women have a high risk of mosquito appeal?
选项 A、They emit more CO2 than normal people.
B、The air surrounding them are much warmer than others.
C、They drink alcohol.
D、They emit more heat than people around.
答案C
解析 细节题。作者在很多小标题下都说到了孕妇的问题，“pregnant women，who average about 1．26 degrees Fahrenheit warmer than others，at a particular risk”，“pregnancy causes women to emit 21 percent more CO2”，“pregnant women are(presumably)avoiding another mosquito attractor：alcohol”，前两个可以对应A、B、D项，而C项说反了，文中说，孕妇不能喝酒，这个因素上避免了吸引蚊子。
转载请注明原文地址:https://kaotiyun.com/show/tTq7777K
0

大学英语四级

相关试题推荐
随机试题
最新回复(0)