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
外语
(1) Once upon a time, you believed in the tooth fairy. You counted on the stability of housing prices and depended on bankers to
(1) Once upon a time, you believed in the tooth fairy. You counted on the stability of housing prices and depended on bankers to
admin
2022-04-02
79
问题
(1) Once upon a time, you believed in the tooth fairy. You counted on the stability of housing prices and depended on bankers to be, well, dependable. And you figured that taking vitamins was good for you. Oh, it’s painful when another myth gets shattered. Recent research suggests that a daily multivitamin is a waste of money for most people — and there’s growing evidence that some other old standbys may even hurt your health. Here’s what you need to know.
Myth: A multivitamin can make up for a bad diet
(2) Last year, researchers published new findings from the Women’s Health Initiative, a long-term study of more than 160,000 midlife women. The data showed that multivitamin-takers are no healthier than those who don’t pop the pills, at least when it comes to the big diseases — cancer, heart disease, stroke. "Even women with poor diets weren’t helped by taking a multivitamin," says study author Marian Neuhouser, PhD, in the cancer prevention program at the Fred Hutchinson Cancer Research Center, in Seattle.
(3) Vitamin supplements came into vogue in the early 1900s, when it was difficult or impossible for most people to get a wide variety of fresh fruits and vegetables year-round. Back then, vitamin-deficiency diseases weren’t unheard-of: the bowed legs and deformed ribs of rickets (caused by a severe shortage of vitamin D) or the skin problems and mental confusion of pellagra (caused by a lack of the B vitamin niacin). But these days, you’re extremely unlikely to be seriously deficient if you eat an average American diet.
Myth: Vitamin C is a cold fighter
(4) In the 1970s, Nobel laureate Linus Pauling popularized the idea that vitamin C could prevent colds. Today, drugstores are full of vitamin C-based remedies. Studies say: Buyer, beware. In 2007, researchers analyzed a raft of studies going back several decades and involving more than 11,000 subjects to arrive at a disappointing conclusion: Vitamin C didn’t ward off colds.
(5) of course, prevention isn’t the only game in town. Can the vitamin cut the length of colds? Yes and no. Taking the vitamin daily does seem to reduce the time you’ll spend sniffling — but not enough to notice. Adults typically have cold symptoms for 12 days a year; a daily pill could cut that to 11 days. Kids might go from 28 days of runny noses to 24 per year. The researchers conclude that minor reductions like these don’t justify the expense and bother of year-round pill-popping.
Myth: Hey, it can’t hurt
(6) The old thinking went something like this — sure, vitamin pills might not help you, but they can’t hurt either. The shift started with a big study of beta-carotene pills. It was meant to test whether the antioxidant could prevent lung cancer, but researchers instead detected surprising increases in lung cancer and deaths among male smokers who took the supplement. No one knew what to make of the result at first, but further studies have shown it wasn’t a fluke — there’s a real possibility that in some circumstances, antioxidant pills could actually promote cancer.
(7) Vitamins are safe when you get them in food, but in pill form, they can act more like a drug, with the potential for unexpected and sometimes dangerous effects.
What effect does Vitamin C have on colds?
选项
A、It can prevent colds.
B、It can cure colds.
C、It can cut short slightly the length of a cold.
D、It has no effect at all.
答案
C
解析
细节题。“colds”是定位关键词,从小标题中的“cold fighter”可知信息在这一节中。通读此节,可以看出维生素C的作用不大,不可能治愈感冒,但是也不能说一点作用都没有,所以选项A、B和D都不对。
转载请注明原文地址:https://kaotiyun.com/show/wYtK777K
0
专业英语四级
相关试题推荐
Storiespeoplehavewithreadingarenotnew,butthetrendisworsening.Recently,arecordhasshownthat10percentofthefr
Ifyou_____drinkandcigarettes,you’llbefarhealthierthanbefore.
ItisabsolutelyessentialthatWilliam______hisstudyinspiteofsomelearningdifficulties.
Whentheauthorities______intohisbackground,theyfoundhehadacriminalrecord.
PASSAGETHREEWhydocynicsregardfootballas"adangertothepeaceofSouthAmerica"’!
A:Ilikeplayingfootball.B:_____whenhewasyoung.
Yourwaystosolvethisproblem,_______,seemprettyeffective.
DeniseSimmonsreceivedaburstofnationalattentionwhenshebecamemayorofCambridgeinJanuary,butsaysher25yearsofpo
DeniseSimmonsreceivedaburstofnationalattentionwhenshebecamemayorofCambridgeinJanuary,butsaysher25yearsofpo
IsraelandHamashadreachedadealonextendingthe________ceasefirebyanextra24hoursuntilTuesdayatmidnight.
随机试题
碱性焊条要求电弧稳定,故一般只能采用直流反极性接法,即焊件接负极,焊钳接正极。
最低接受目标:
二元函数z=x2+y2-3x-2y的驻点坐标是().
下列各类公司或行业,不适宜采用市盈率进行估值的有()。Ⅰ.成熟行业Ⅱ.亏损公司Ⅲ.周期性公司Ⅳ.服务行业
下列交易或事项会引起筹资活动现金流量发生变化的有()。
某工业企业2015年销售货物收入3000万元(不舍税,下同),出租设备收入300万元,包装物出租收入100万元,视同销售货物收入600万元,转让一间车库收入700万元,接受捐赠收入20万元,债务重组收益10万元,当年实际发生业务招待费30万元,该企业当年可
金融工具分为货币市场工具和资本市场工具,这是按照()来进行的分类。
阅读材料,并按要求作答。质数和合数找出1~20各数的因数,看看它们的因数的个数有什么规律。一个数,如果只有1和它本身两个因数,这样的数叫做质数(或素数)。如2,3,5,7都是质数。一个数,如果除了1和它本身还有别的因数,这样的数叫做合数。如4,6
英语教学最常用的评价形式有两种,______和______;前者是用来评价学习的______,后者是用来评价学习的______。
什么是临界资源(criticalresource)?请用100字以内文字简要说明。代码一所示的方法能够实现共享资源的互斥访问吗?请用300字以内文字举例说明。
最新回复
(
0
)