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Eating healthily costs about $1.50 more per person daily, according to the most thorough review yet of the affordability of a healthy diet. 'For many low-income families, an【C1】______$1.50 daily is quite a lot,' says Mayuree Rao, 'It【C2】______to about $550 more per year per person, and that could be a real【C3】______to healthy eating.' Rao and her colleagues reached their【C4】______after analysing 27 studies from 10 high-income countries, comparing price【C5】______for healthy versus unhealthy ingredients and diets.【C6】______one study compared the cost of a diet rich in fruit and vegetables versus one that was【C7】______in them. Another compared prices of【C8】______healthy and less healthy items, such as wholegrain versus white bread. Individual items were【C9】______matched in price. Meats【C10】______the largest difference: healthier options cost an average of 29 cents per serving more than unhealthy options. 【C11】______this, comparisons of whole diets showed that healthier diets cost averagely $1.48 more per day. This shows that comparisons based on single ingredients dont tell the full【C12】______. 'It tells us that,【C13】______, it doesnt cost more to eat healthier based on one nutrient,' says Rao. 'But theres growing evidence that the【C14】______of foods in your diet【C15】______your disease risk more than any single nutrient, so we think our【C16】______finding that healthier diets cost about $1.50 more has the most public health【C17】______.' As to why healthier food has become more【C18】______Rao says that it may be because the food industry organizes itself and the types of food it produces to【C19】______its own economies of scale,【C20】______than whats best for consumers.
【C1】
A.available
B.adequate
C.extra
D.economical

A.50
B.50
C.'
D.【C6】______one
E.48
F.50
G.'
H.
【C1】
A.available
B.adequate
C.extra
D.economical


【参考答案】

C
文章第1句话提到$1.50more“多花1.50美元”,据此空格处应选与more意思接近的形容词,修饰$1.50,C项extra“额外的”符合要求。
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未分类题【C2】

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未分类题【C18】

未分类题In a lab in Oxford Universitys experimental psychology department, researcher Roi Cohen Ka-dosh is testing a relatively new brain-stimulation technique which may help people learn and improve their understanding of math concepts. The electrodes(a small piece of metal or other substance that is used to take an electric current)are【C1】______in a tightly fitted cap and worn around the head. The device, run off a 9-volt battery commonly used in smoke detectors, induces only a【C2】______current and can be targeted to【C3】______areas of the brain or applied generally. The mild current reduces the【C4】______of side effects, which has【C5】______possibilities about using it, even in individuals【C6】______a disorder, as a general cognitive【C7】______. Scientists also are investigating its use to treat mood disorders and【C8】______conditions. Dr. Cohen Kadoshs【C9】______work on learning enhancement and brain stimulation is one example of the long journey faced by scientists【C10】______brain-stimulation and cognitive-stimulation techniques.【C11】______other researchers in the community, he has dealt with public【C12】______about safety and side effects, plus【C13】______from other scientists about whether these findings would hold in the wider population. There are also ethical questions about the technique.【C14】______it truly works to enhance cognitive performance, should it be【C15】______to anyone who can afford to buy the device—which already is【C16】______for sale in the U.S.? Should parents be able to perform. such stimulation on their kids without【C17】______? 'Its early days but that hasnt stopped some companies from【C18】______the device and marketing it as a learning tool,' Dr. Cohen Kadosh says. 'Be very【C19】______.' However, if the technique continues to show【C20】______, 'this type of method may have a chance to be the new drug of the 21st century,' says Dr. Cohen Kadosh.【C1】A.soldB.formedC.placedD.dedicated