A.an effort with no results

B.a search for a diet without fruits

C.a research on fruitless diet

D.a diet serving as medicine

15.Many women take it for granted, according to passage that .

A.a balanced diet can result in being fat

B.staying thin and healthy are both possible

ck of variety in diets leads to staying thin

D.vitamins are some kind of substitutions for food

16.By “if the fuel isn’t there, the spark is useless”, the author means .

A.carbohydrates, protein and fat are enough to support a human life

B.vitamins and minerals are virtually of no value

C.carbohydrates, protein and fat are as important as vitamins and minerals

D.without carbohydrates, protein and fat, vitamins and minerals are of no use

答案：

12.C 从第一段可以知道职业妇女忙，对做饭不感兴趣，从第一段的“have neither the desire nor the time to cook for themselves”(即没有愿望也没有时间为她们自己做饭)可以看出C项正确。

13.B 橘汁和橘汁饮料的区别在于橘汁是自然的，有营养的，是直接从橘子中来的。橘汁和橘汁饮料的区别在第二段中曾经谈到过，即橘汁饮料“contains only a small percentage of real juice—the rest is largely colored sugar water”(只包含很少比例的真正橘汁——其他大都是加了色素的糖水)。因此，相对而言，橘汁是natural, nutritious and prepared from oranges(天然的、有营养的、直接从橘子中来的健康饮料)。

14.A a fruitless search 意思为“没有结果的努力”，文中第四段谈到“试图寻找一种可以包治百病，又能使你成为超人的食谱是徒劳的”。因此，a fruitless search表示毫无结果的努力。fruitless的引申意义为没有结果的，徒劳的。

15.D 许多妇女想当然地认为维他命是一种食物的代替品。文中第四段提到“As women,\:we believe that vitamins are some kind of magic cure to replace food”。 w.w.w.k.s.5.u.c.o.m

16.D 通过引用“要是没有燃料，光有火花是不行的”。作者的意思是没有碳水化合物，蛋白质和脂肪，维他命和矿物质没有用处。文中最后一段在谈到碳水化合物、蛋白质、脂肪和维生素、矿物质的关系时，作者将碳