首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
考研
Barbecuing meat gives it great flavor. This taste, though, comes at a price, since the process creates molecules called polycycl
Barbecuing meat gives it great flavor. This taste, though, comes at a price, since the process creates molecules called polycycl
admin
2022-02-27
57
问题
Barbecuing meat gives it great flavor. This taste, though, comes at a price, since the process creates molecules called polycyclic aromatic hydrocarbons (PAHs) which damage DNA and thus increase the eater’s chances of developing cancer. For those who think barbecues one of summer’s great delights, that is a shame. But a group of researchers led by Isabel Ferreira of the University of Porto, in Portugal, think they have found a way around the problem. When barbecuing meat, they suggest, you should add beer.
This welcome advice was the result of some serious experiments, as Dr. Ferreira explains in a paper in the Journal of Agricultural and Food Chemistry. The PAHs created by barbecuing form from molecules called free radicals which, in turn, form from fat and protein in the intense heat of this type of cooking. One way of stopping PAH-formation, then, might be to use chemicals called antioxidants that clear away free radicals. And beer is rich in these, in the shape of melanoidins, which form when barley is roasted. So Dr. Ferreira and her colleagues prepared some beer marinades, bought some steaks and headed for the pan.
One of their marinades was based on Pilsner, a pale beer. A second was based on a black beer. Since black beers have more melanoidins than light beers—as the name suggests, they give it color. Dr. Ferreira’s hypothesis was that steaks immersed in the black-beer marinade would form fewer PAHs than those immersed in the light-beer marinade, which would, in turn, form fewer than steaks left unmarinated.
And so it proved. When cooked, unmarinated steaks had an average of 21 nanograms of PAHs per gram of barbecued meat. Those marinated in Pilsner averaged 18 nanograms. Those marinated in black beer averaged only 10 nanograms. Tasty and healthy too, then. Just what the doctor ordered.
The author’s attitude towards Dr. Ferreira’s experiments is________.
选项
A、favorable
B、contradictory
C、doubtful
D、indifferent
答案
A
解析
观点态度题。文章最后两段都在描写费雷拉博士的实验,只有最后一句能够体现出作者对于费雷拉博士实验的看法:Tasty and healthy too,then Just what the doctor ordered. 其中tasty和healthy都是比较积极的词,可见作者对费雷拉博士和她的实验是比较认可的,故本题答案为A项。
转载请注明原文地址:https://kaotiyun.com/show/i2i4777K
0
考研英语二
相关试题推荐
ThewriterwarnsAmericansthat______.Thewritergivestheexampleofbreadtoshowthat______.
"Sustainability"hasbecomeapopularwordthesedays,buttoTedNing,theconceptwillalwayshavepersonalmeaning.Havingen
TheUnitedStateshashistoricallyhadhigherratesofmarriagethanthoseofotherindustrializedcountries.Thecurrentannual
Whowouldhavethoughtthat,globally,theITindustryproducesaboutthesamevolumesofgreenhousegasesastheworld’sairlin
IwasaddressingasmallgatheringinasuburbanVirginialivingroom—awomen’sgroupthathadinvitedmentojointhem.Through
Officejobsareamongthepositionshardesthitbycomputation(计算机自动化).Wordprocessorsandtypistswillloseabout93,000jobs
Languageisthemostastonishingbehaviorintheanimalkingdom.Itisthespecies-typicalbehaviorthatsetshumanscompletely【
"Itkeepsyougrounded,putsyouinasituationthatkeepsyououtoftrouble,andputsyouwithagroupthathasthesamemind-
[A]Makingfaces[B]Showoff[C]Useacoloreffect[D]Spontaneoussnapshots[E]Creativebackground[F]Natura
[A]Makingfaces[B]Showoff[C]Useacoloreffect[D]Spontaneoussnapshots[E]Creativebackground[F]Natura
随机试题
建设工程施工合同无效,将会产生的法律后果有()。
表示空间分辨率的单位是
A.宣毒发表汤B.清解透表汤C.透疹凉解汤D.解肌透痧汤E.凉营清气汤猩红热毒炽气营证,治疗应首选
海关的现场放行即等于结关。
人民币利率互换的参考利率应为( )。
对收入分配进行调控,属于政府经济职能中的()。
文艺批评的诸多缺陷是缺乏理论勇气的表现,批评之所以失语和缺位,是因为背后没有了可适用的足够强大的新理论和精神来支撑,心中也就无话可说。什么是健康的文艺批评?标准有很多。其中最重要的一条标准,就是能宽容、理性地对待与自己文化主张不一样的文化实践。这段文字意在
必须把教育摆在优先发展的战略地位思想的提出始自党的()。
某人想用20块长2米、宽1.2米的金属网建一个靠墙的长方形鸡窝。为防止鸡飞出去,鸡窝的高度不得低于2米,要使所建的鸡窝面积最大,长度需要多少米?
Readthearticlebelowaboutpublicimage.Choosethebestwordtofilleachgap,fromA,B,CorD.Foreachquestion19—33,ma
最新回复
(
0
)