2023年大学英语四级考前冲刺题2023.docx
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1、2023年大学英语四级考前冲刺题2023 大学英语四级考前冲刺题2023 为了关心考生们更顺利地通过大学英语四级,下面是我为大家搜寻整理的关于大学英语四级考前冲刺题,欢迎参考学习,盼望对大家有所关心! The Heart Assoeiation’s Junk Science Diet A.A recent Cambridge University anal ysis of 76 studies involving more than 650,000 people concluded,;The current evidence does not clearly support gui
2、delines that low consumption of total Saturated fats.;Yet the American Heart AssociationAriA.,in its most recent dietary guidelines,held fast to the idea that we must A.l eat low.fat diets for optimal heart health.It’s a stance that—at the very best—is controversiA.,and at worst is
3、 dead wrong.As a practicing cardiologist心脏病学家for more than three decades,I agree with the latte—it’s dead wrong.Why does the AHA cling to recommendations that fly in the face of scientific evidence? B.What I discovered was both eye.opening and disturbin9.The AHA not only ignored A.l the
4、other risk factors for heart disease,but it appointed someone with ties to Big Food and bizarre scientific beliefs to lead the guideline-writing paneHust the type of thing’that undermines the public’s confidence in the medical community.The AHA guidelines warrant that saturated fat make
5、up no more than 5 to 6 percent of daily cal ories for adults because this will lower;bad;cholesterol胆固醇.And,for those people who need blood pressure control,the guidelines A.so suggest lowering sodiumsaltintake to no more than a teaspoon2,300 mgdaily.Despite many other known risk factors for heart d
6、isease,salt and fat were,astonishingly,the only two considered by the AHA panel writing the guidelines.There are many other recognized risk factors the AHA ignored,including blood sugar level,low;good;cholesterol,insulin胰岛素levels,and body weight—an of these are influenced by diet. C.In fact,mo
7、st people who have heart attacks don’t have elevations in bad cholesterol.They are much more likely to have metabolic syndrome新陈代谢综合征—a condition that puts you at high risk for diabetes and heart disease.Interestingly enough,blood triglycerides甘油三脂do not go up with eating fat—they
8、go up if you eat a diet high in processed grains,starches,and sugar.Unfortunately for the proponents of high-carbohydrate糖类diets,high blood triglycerides are a major risk factor for heart disease.In addition.low fat/high carb diets lower protective;good;cholesterol and raise insulin. These diets are
9、 involved in the development of diabetes.which is a powerful risk factor for developing heart disease. Heart Cheek Program’s contribution D.The writers of the 20 13 statin guidelines based their recommendations on studies that looked at the reduction in the risk of events like heart attacks in
10、 people treated with statins pared to people on a placebo劝慰剂.The AHA dietary guidelines do not cite any diet studies that looked at whether following a specific diet lowered the risk of developing heart events—yet they are giving dietary advice.Why?There might be two plausible reasons.One is t
11、he AHA&39;s moneymaking;Heart Check Program.;The second is the conflict of interest of Robert Ecke—the co-chair of the panel that wrote the guidelines. E.Forty.five percent of these;heart heA.thy;foods—over 400 of them—are meat:92 are processed meats—which have been shown to
12、have either neutrA. or negative effects on heart health.Even more problematic are the foods containing added sugar.The AHA recommends that women consume less than 6 teaspoons1 00 caloriesof sugar a day and less than 9 teaspoons1 50 caoriesfor men.Yet there are items that get the nod of approvA. from
13、 the Heart Check program despite being near or at the sugar limit.1ike Bruce’s Yams Candied Sweet Potatoes and HeA.thy Choice SA.isbury Steak. F. Until this year,Heart Check approved many foods with trans-fats,which raise bad cholesterol and lower good cholesterol,among other harmful effects o
14、n heA.th,like increasing inflammation发炎and the laying down of calcium in arteries动脉. G.Like the dietary guidelines,the AHA Heart Check Program appears to address only the effect of foods on cholesterollevel and blood pressure.Meanwhile,since the 1 970s,our yearly sugar consumption has increased quic
15、kly A.ong with the incidence of diabetes and obesity.This brings us to Dr.Robert H.Eckel,the co-chair of the Working Group.He is a consultant for Foodminds.which specializes;in food,beverage,nutrition,health and wellness.;Foodminds works with more than 30 leading food,beverage,and nutrition to offer
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