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
Grilling meat gives it great flavour. This taste, though, comes at a price, since the process creates molecules called polycycli
Grilling meat gives it great flavour. This taste, though, comes at a price, since the process creates molecules called polycycli
admin
2016-03-21
32
问题
Grilling meat gives it great flavour. 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 grilling 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 griddle.
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 colour—Dr. Ferreira’s hypothesis was that steaks steeped in the black-beer marinade would form fewer PAHs than those steeped 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 grilled 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.
It can be learned from the first paragraph that grilled meat ______.
选项
A、is both tasty and healthy
B、is delicious but expensive
C、will inevitably cause cancer
D、may enhance the chance of cancer
答案
D
解析
根据题干定位到第一段。根据grilled meat定位到第一句,该句提到“烤肉很美味”,接着第二句明确指出:This taste,though,comes at a price…“然而这种美味却是有代价的”。随后从专业角度分析这个代价,得出结论:thus increase the eater’s chance of developing cancer“提高食客患癌的几率”。由此可以判断选项[A]的healthy有误;选项[B]expensive属于无中生有;选项[C]will inevitably cause cancer“不可避免地导致癌症”过于绝对;选项[D]may enhance the chance of cancer“可能提高患癌的几率”与原文一致,故[D]为本题答案。
转载请注明原文地址:https://kaotiyun.com/show/7isZ777K
0
考研英语一
相关试题推荐
Dieting,accordingtoanoldjoke,maynotactuallymakeyoulivelonger,butitsurefeelsthatway.Nevertheless,evidencehas
Itgoesagainsteverybody’sinnercynictoreadasentencelikethefollowing:Weareonthevergeofthegreatestageofcreati
Forinvestorswonderingwhethertheyshoulddumptheirstocksbecausetheyneedthemoney,Ihaveonlythistosay:Ifyouneed
Lessthanayearago,anewgenerationofdietpillsseemedtoofferthelong-soughtanswertoourchronicweightproblems.Hund
Lessthanayearago,anewgenerationofdietpillsseemedtoofferthelong-soughtanswertoourchronicweightproblems.Hund
Lessthanayearago,anewgenerationofdietpillsseemedtoofferthelong-soughtanswertoourchronicweightproblems.Hund
[A]Notlongago,texting,alsocalledSMS,wasthedomainoftheyoung.Butnowitappearstohavejoinedtheletter,phone,fax
Lifeisunfair,aseventheBibleacknowledges.Wecan’tallhitabaseballlikeDiMaggioorsingliketheBeatles.Buthowmuch
Thetranslatormusthaveanexcellent,up-to-dateknowledgeofhissourcelanguages,full【C1】______inthehandlingofhistarget
South-EastAsia’slow-costairlineshavegonefromfeasttofamine.Cheap,short-haul,no-frillsflyingcame【C1】______tothereg
随机试题
型号为QYDB119-100/1000E的潜油电泵,适用油井温度为()。
全国人代会会议举行前召开预备会议,预备会议___________。
旅游者的类型可以分为_______、_________和家庭事务型。
症见头晕目眩,少气懒言,乏力自汗,舌淡苔白,脉细弱,属于
属于喹啉衍生物类生物碱的是
基础代谢率是以单位时间内下列哪项为单位计算的产热量
2005年8月,设立于同一行政区域内的甲公司向乙公司订购了40台电脑,协议约定乙公司于2006年1月31日之前交货,甲公司于2006年3月15日之前付清货款。乙公司按期向甲公司交付了40台电脑,但甲公司只在2006年3月向乙公司交付了29台电脑款,其余11
下列各项中不属于劳务分包合同中承包人义务的是()。
采用方差分析法来推断某个因素对所考察的指标有无显著影响,该因素有K个水平,样本容量为N,则下列表述中正确的是()
用SOL语句将STUDENT表中字段“年龄”的值加1,可以使用的命令是
最新回复
(
0
)