题目内容
17．Frozen fruit and vegetables can be healthier，with higher levels of vitamins and cancer fighting antioxidants （抗氧化剂），that leafy"fresh"produce．Two independent studies found more beneficial nutrients in everything from frozen broccoli florets to carrots．In two out of three cases frozen fruit and vegetables scored better on antioxidant-type compounds（化合物）．Consumption of these antioxidant compounds is considered beneficial in preventing cancer and supporting the wording of the body，brain，skin and eyes．Produce bought from the supermarket greengrocer sections is full of color，while many stores even use fine mist sprays （喷剂）to give a just picked look．This supermarket theatre convinces shoppers to pay an extra payment for food that they believe is good for their family's health as well as being tasty．However，the reality is that these vegetables and fruit may well have been held in storage for a month，while they then sit in the fridge at home for days before being eaten．
Over the days，they gradually deteriorate，slowly losing some of the nutrients associated with leafy greens and fruit．By contrast，frozen vegetables and fruit are chilled（冷藏）soon after harvest and so keep higher levels of vitamins and antioxidants until they are eaten．
Two teams，one from Leatherhead Food Research and the other from the University of Chester，carried out 40tests to measure nutrient levels in produce which had been sitting in a fridge for three days and the frozen equivalent （相等物）．The findings show that eating newly picked produce is the healthiest option； however，frozen food can be almost as good and is often better than items sold as"fresh"．Leatherhead's Dr Rachel Burch said："We must ignore the mistaken opinion that fresh food is always better for us than frozen food．"
These results show that frozen food can be nutritionally comparable to fresh produce．Direct comparison：In two out of three cases frozen fruit and vegetable scored better on antioxidant-type compounds including Vitamin C，polyphenols and anthocyanins （多酚和花青素），a study found．Her team found frozen broccoli had higher levels of Vitamin C．However，fresh food scored better on polyphenols，which are thought to help prevent cancer．
32．What does the passage mainly tell us？D
A．Fresh food is better than frozen food
B．Frozen food might cause cancer．
C．Frozen food is as good as fresh food
D．Frozen food is better than"fresh"food．
33．Why do some supermarkets spray fine mist on fruit and vegetables？C
A．To keep them in good quality
B．To make them taste good．
C．To make them look fresh
D．To make them sell cheaply．
34．What does the underlined word"deteriorate"in Paragraph 3mean？A
A．Grow worse
B．Grow better．
C．Remain the same
D．Die out．
35．What is more helpful in preventing cancer？C
A．Vitamin C
B．Frozen fruit and vegetables．
C．Fresh fruit and vegetables
D．Anthocyanins．
分析 本文介绍了冷冻食品比新鲜食品在某些方面更健康．
解答 32-35．DCAC
32．D主旨大意题．文章开篇点题Frozen fruit and vegetables can be healthier，with higher levels of vitamins and cancer fighting antioxidants （抗氧化剂），that leafy"fresh"produce．冷冻水果和蔬菜更健康，比"新鲜"果蔬所含的维生素和抗癌氧化剂水平高．故本题答案为D选项．
33．C细节理解题．根据第二段"many stores even use fine mist sprays （喷剂）to give a just picked look．…However，the reality is that these vegetables and fruit may well have been held in storage for a month，while they then sit in the fridge at home for days before being eaten．"许多商店甚至给蔬菜水果喷雾打湿看似是"新采摘"的．不过，实际上这些蔬菜和水果都有可能已经存放了一个月，又在家里的冰箱里放了好几天才吃．由此可知，超市给果蔬喷雾是为了使它们看起来新鲜；故本题答案为C选项．
34．A词义猜测题．根据画线词下文"slowly losing some of the nutrients associated with leafy greens and fruit．绿叶蔬菜和水果逐渐失去某些营养素．由此可猜蔬菜和水果逐渐变坏，故本题答案为A选项．
35．C细节理解题．根据最后一段"However，fresh food scored better on polyphenols，which are thought to help prevent cancer．"不过新鲜的果蔬多酚类物质含量较高--多酚类物质被认为有助于预防癌症．故本题答案为C选项．
点评 本文是一篇科教类阅读，题目涉及多道细节理解题，做题时结合原文和题目有针对 性找出相关语句进行仔细分析，结合选项选出正确答案．推理判断也是要在抓住关键句子的基础上合理的分析才能得出正确的答案．
