Cancer Fighters
Preventing cancer is a compelling reason to load up your cart in the produce department. Scientists have re- cently estimated that approximately 30 to 40 percent of all cancers could be averted if people ate more fruits, vege- tables, and plant-based foods and minimized high-fat, high-calorie edibles that have scant nutritional value. Up to 70 percent of cancers might be eliminated if people also stopped smoking, exercised regularly, and controlled their weight.
In the past, researchers had linked fat consumption with the development of cancers, but they currently be- lieve that eating fruits, vegetables, and grains may be more important in preventing the disease than not eating fat. "The evidence about a high-fat diet and cancer seemed a lot stronger several years ago than it does now," says Melanie Polk, a registered dietitian and director of nutrition education at the American Institute for Cancer Re- search.
Although scientists are still not certain about the specifics, they're beginning to close in on the healthful con-stituents of plant-based foods. In particular, they're looking closely at two components——antioxidants and phyto-chemicals.
The antioxidants (carotenoids, such as beta carotene and lyeopene, and vitamins C and E) found in fruits,vegetables, and other plant-based foods fight free radicals, which are compounds in the body that attackand destroy cell membranes. The uncontrolled activity of free radicals .is believed to cause many cancers.
The phytochemicals present in fruits and vegetables protect the body by stunting the growth of malignant cells.Phytochemicals, naturally occurring substances, include indoles in cabbage or cauliflower, saponins in peas andbeans, and isoflavones in soymilk and tofu. Investigators have only an inkling of how many phytochemicals existand how they work. They are confident, however, that you can get a basketful of anti-cancer nutrients by mixingand matching at least five servings a day
…… 一纸六级证书,成为众多考生步入社会的绿色通行证,这无疑增加了这场考试的含金量。而六级考试改革以来,许多考生都在为新题型苦恼不已,更为找不到一本好的考试辅导书而犯愁。谁都想一次通过且取得优异成绩,而本书恰可助您一臂之力。
无论考试题型如何变化,英语像任何语言一样,都是寓于社会发展之中的变化,总会围绕一定的主题展开,反映教育、科技、文化等方方面面,这点是毋庸置疑的。六级考试的英语是否也遵循这一潜规则呢?为了证明这一点,我们对历年的六级真题进行了全方位地科学研究与分析,结果发现:无论新题型,还是旧题型,历年的试题总是围绕某几个主题而展开,并按照一定的比例分布。__
此外,起源于加拿犬的“沉浸式学习法”表明,第二语言的学习,如果沉浸在一定的外语环境中��在短时间内集中突击,是可以提高英语学习的综合技能的。
鉴于以上研究结果,《大学英语六级常考主题突击训练》这本书应运而生。也许考生已经厌倦了市面上那些浩如烟海的辅导书,它们大都按照老套的题型编排,所说内容也都大同小异。那么,请您拿到这本书,细细读。它将帮您摆脱以往的视觉疲倦,从新的角度出发,让您更好地备战考试。
您手中的这本书,它与众多的六级考试辅导书不同。它是一本新的应考宝典。它独具匠心,通过完全扫描历年真题,以真题为蓝本,提炼出常考主题。在全书编排中,颠覆了传统的编排体例,以主题为明线,以*新题型为暗线,明暗结合地设置全书栏目,给考生一个全新的备考思路。
这本书为的是指导考生在较短的备考时间内,有的放矢地在主题一隋境中汲取六级考试精华。全书主题与题型兼顾,基础与技巧并重,讲解与模拟互补,这样的精心编排;定能帮助考生轻松通过六级考试大关。
全书共分为六部分:写作、快速阅读、听力理解、仔细阅读、改错与完形填空和翻译。其中,听力理解包括四章,即:短对话、长对话、短文理解和复合式听写;仔细阅读包括三章,即:简答题、篇章词汇和常规阅读。六个部分的题型完全按照真题顺序安排,让考生从总体上领略六级真题。
全书各部分编排中,总体分为“主题详尽探究”和“常考主题强化演练”两大部分。首先,帮助考生全方位解读考试大纲;然后,带考生在“真题再现”中迅速熟悉各个主题在每个题型中的分布情况,并辅以行之有效的应对步骤与技巧;*后,在**时间为考生提供精心编选的模拟试题,进行强化演练,并附有阐述清晰的精当解析。让考生置身于“常考主题”的情境之中,充分了解并熟悉六级考试的特点,适应其难度与节奏,**备考,成功应试。