知性英语－营养美味的水果

 
　　Although most fruits are sweet, they tend to be relatively¹ low in calories. Better still, they are a good source of fiber² and are packed with nutrients³ - especially Vitamin C.

　　On reason that the much-talked about "Mediterranean⁴ diet" is considered to be so good for the heart is because it includes plenty of fresh fruit. The World Health Organization recommends that everyone should try to eat at least five portions of different fruit or vegetables each day.

　　A portion of fruit counts as a single fruit, such as an apple or orange, a cup of small fruit such as grapes or raspberries, or a glass of pure fruit juice. You can include dried, tinned and frozen fruit as part of your quota⁵, but tinned fruit is often sweetened in syrup⁶, and contains less vitamin C.swherespossible buy fruit that has been canned in its own juice without added sugar. Fresh fruit and juice provide most of our daily intake⁷ of vitamin C with citrus fruit (oranges, lemons, grape fruit and tangerines) being the most important source. Other top vitamin C providers include Kiwi Fruit, strawberries, raspberries, blackcurrants mangoes and papayas. Fruits with orange or deep yellow flesh, such as apricots, mangoes and cantaloupe melons, get their color from a yellow orange pigment⁸ called beta carotene, the plant from of vitamin A. Other carotene pigments⁹ such as lycopene are found in red fruits, and these along with beta carotene are thought to protect against free radicals¹⁰ and possibly cancer. Fruit is rich in potassium, especially bananas and dried fruits. Potassium helps to regulate blood pressure. It works in tandem¹¹ with sodium¹² to regulate the body's fluid balance.

　　Another reason why fruit is so important to the diet is because it contains both soluble¹³ and insoluble fiber. The insoluble fiber help reduce the risk of colon¹⁴ Cancer while soluble fiber can help to lower blood cholesterol¹⁵ levels. Citrus fruit and dried fruits (such as figs¹⁶, dates, apricots and raisins) are particularly good sources of fiber. Pesticides¹⁷ are applied¹⁸ to crops to ensure that the produce is of a high quality and free from pests and diseases, and in most fruit the levels are so low that they pose no hazard to health even for children, however it is sensible to thoroughly¹⁹ wash fruit in clean running water before consumption. The benefits of eating fruit are many. Fruit tastes good, it contains antioxidants that may help to protect against cancer. It is a rich source of potassium that helps to regulate blood pressure and it provides most of our daily intake of vitamin C.

1 relatively   

adv.比较...地，相对地

参考例句：

• The rabbit is a relatively recent introduction in Australia.兔子是相对较新引入澳大利亚的物种。
• The operation was relatively painless.手术相对来说不痛。

2 fiber   

n.纤维，纤维质

参考例句：

• The basic structural unit of yarn is the fiber.纤维是纱的基本结构单元。
• The material must be free of fiber clumps.这种材料必须无纤维块。

3 nutrients   

n.（食品或化学品）营养物，营养品( nutrient的名词复数 )

参考例句：

• a lack of essential nutrients 基本营养的缺乏
• Nutrients are absorbed into the bloodstream. 营养素被吸收进血液。 来自《简明英汉词典》

4 Mediterranean   

adj.地中海的；地中海沿岸的

参考例句：

• The houses are Mediterranean in character.这些房子都属地中海风格。
• Gibraltar is the key to the Mediterranean.直布罗陀是地中海的要冲。

5 quota   

n.（生产、进出口等的）配额，（移民的）限额

参考例句：

• A restricted import quota was set for meat products.肉类产品设定了进口配额。
• He overfulfilled his production quota for two months running.他一连两个月超额完成生产指标。

6 syrup   

n.糖浆，糖水

参考例句：

• I skimmed the foam from the boiling syrup.我撇去了煮沸糖浆上的泡沫。
• Tinned fruit usually has a lot of syrup with it.罐头水果通常都有许多糖浆。

7 intake   

n.吸入，纳入；进气口，入口

参考例句：

• Reduce your salt intake.减少盐的摄入量。
• There was a horrified intake of breath from every child.所有的孩子都害怕地倒抽了一口凉气。

8 pigment   

n.天然色素，干粉颜料

参考例句：

• The Romans used natural pigments on their fabrics and walls.古罗马人在织物和墙壁上使用天然颜料。
• Who thought he might know what the skin pigment phenomenon meant.他自认为可能知道皮肤色素出现这种现象到底是怎么回事。

9 pigments   

n.（粉状）颜料( pigment的名词复数 )；天然色素

参考例句：

• The Romans used natural pigments on their fabrics and walls. 古罗马人在织物和墙壁上使用天然颜料。 来自辞典例句
• The original white lead pigments have oxidized and turned black. 最初的白色铅质颜料氧化后变成了黑色。 来自辞典例句

10 radicals   

n.激进分子( radical的名词复数 )；根基；基本原理；[数学]根数

参考例句：

• Some militant leaders want to merge with white radicals. 一些好斗的领导人要和白人中的激进派联合。 来自《简明英汉词典》
• The worry is that the radicals will grow more intransigent. 现在人们担忧激进分子会变得更加不妥协。 来自辞典例句

11 tandem   

n.同时发生；配合；adv.一个跟着一个地；纵排地；adj.（两匹马）前后纵列的

参考例句：

• Malcolm's contract will run in tandem with his existing one.马尔科姆的合同将与他手头的合同同时生效。
• He is working in tandem with officials of the Serious Fraud Office.他正配合欺诈重案办公室的官员工作。

12 sodium   

n.（化）钠

参考例句：

• Out over the town the sodium lights were lit.在外面，全城的钠光灯都亮了。
• Common salt is a compound of sodium and chlorine.食盐是钠和氯的复合物。

13 soluble   

adj.可溶的；可以解决的

参考例句：

• These tablets are soluble in water.这些药片可在水中溶解。
• Camphor is soluble in alcohol.樟脑在酒精中可以溶化。

14 colon   

n.冒号，结肠，直肠

参考例句：

• Here,too,the colon must be followed by a dash.这里也是一样，应当在冒号后加破折号。
• The colon is the locus of a large concentration of bacteria.结肠是大浓度的细菌所在地。

15 cholesterol   

n.（U）胆固醇

参考例句：

• There is cholesterol in the cell of body.人体细胞里有胆固醇。
• They are determining the serum-protein and cholesterol levels.他们正在测定血清蛋白和胆固醇的浓度。

16 figs   

figures 数字，图形，外形

参考例句：

• The effect of ring dyeing is shown in Figs 10 and 11. 环形染色的影响如图10和图11所示。
• The results in Figs. 4 and 5 show the excellent agreement between simulation and experiment. 图4和图5的结果都表明模拟和实验是相当吻合的。

17 pesticides   

n.杀虫剂( pesticide的名词复数 )；除害药物

参考例句：

• vegetables grown without the use of pesticides 未用杀虫剂种植的蔬菜
• There is a lot of concern over the amount of herbicides and pesticides used in farming. 人们对农业上灭草剂和杀虫剂的用量非常担忧。 来自《简明英汉词典》

18 applied   

adj.应用的；v.应用，适用

参考例句：

• She plans to take a course in applied linguistics.她打算学习应用语言学课程。
• This cream is best applied to the face at night.这种乳霜最好晚上擦脸用。

19 thoroughly   

adv.完全地，彻底地，十足地

参考例句：

• The soil must be thoroughly turned over before planting.一定要先把土地深翻一遍再下种。
• The soldiers have been thoroughly instructed in the care of their weapons.士兵们都系统地接受过保护武器的训练。