Fresh flowers actually continue to grow while in a va．So in order to keep flo

题文

Fresh flowers actually continue to grow while in a va．So in order to keep flowers fresh, you need to consider what the flowers need to grow and stay healthy．Flowers need water, light, and food．Besides, you need to be aware of a few precautions to take． Distilled water（蒸馏水） is the best kind of water to u for fresh flowers, becau there are no chemicals in it．Change the water for your fresh flowers every day or no less than every 2 days to prevent bacteria（细菌） building up．Cut the stems under water again before putting them back in the va, so that they will be able to draw water up easily． Keep your fresh flowers out of direct sunlight．At night, put them in the fridge．This will prolong their life．Adding commercial flower food to good water is probably the best method of keeping flowers fresh．Some people put sugar in the water for food．That is OK, but commercial flower food has bacteria-killing ingredients, which can make the water more acidic（酸性的）．If you want a more natural food for your fresh flowers, try water that has been specially treated．That solution will also give the water acidity, sugar, and bacteria-killing ability． Keep your fresh flowers away from fruit．Fruit gas, or ethylene, will reduce the life of your fresh flowers, making them get older faster．Ethylene is what makes fruit ripen．It is given off by dead flowers, too, so be sure to remove them． If you follow the tips, your fresh flowers will last a long time and beautify any room in which you put them．1．What does the underlined word precautions in Paragraph 1 mean? A．problems that happen to flowers． B．advantages of having flowers． C．measures taken to prevent problems．   D．preparations to grow flowers outside．2．The fact that distilled water is most beneficial for fresh flowers indicates that ______． A．distilled water is perfect for people to drink B．running water shouldn’t be ud to water flowers C．it takes great efforts to keep flowers fresh D．fresh flowers aren’t ud to certain chemicals3．In order to prolong the life of fresh flowers, you should ______． A．protect them from direct sunlight during the daytime B．put them in a damp place at night C．put them in a fridge all the time D．put them near water during the daytime4．Which of the following is the best method of keeping flowers fresh? A．Cutting the stems under water before putting them back． B．Using distilled water and commercial flower food． C．Keeping them away from fruit gas． D．Watering them with water which contains sugar． 题型：未知难度：其他题型

答案

小题1:C小题2:D小题3:A小题4:B

解析

略

考点

据考高分专家说，试题“ Fresh flowers actua.....”主要考查你对 [健康环保类阅读 ]考点的理解。 健康环保类阅读

健康环保累阅读概念：

健康环保类文章常是介绍科学知识、生活常识和环境保护方面的短文。体裁有记叙文、 说明文、议论文和各种应用文。

健康环保类文章阅读技巧：

   健康环保类文章常是介绍科学知识、生活常识和环境保护方面的短文。阅读此类短文要以现象或事物为中心进行思考，理解现象产生的原因、条件和客观规律等。同时要抓住事物的特征、用途和相互关系等。科普环保类文章一般为说明文，从结构上看大致可分为三个部分：   第一部分一般是文章的首段，主要用来提出文章的主题，即文章想要阐述、说明的主要内容；   第二部分是文章的主体，可由若干个段落组成，对文章的主题进行展开说明；   第三部分是结尾段，对文章的主题进行归纳总结。这类文章多用一般现在时，而且一般多使用客观性词语表述。有时为了强调客观性，也常使用被动语态。   从近几年的考试题来看，科普环保类的文章越来越与人们的实际生活相接近。由于此类文章缺乏故事情节，很多同学对此类文章感到费解。但一般的科普类文章都是就事论事，需要逻辑推理和想象的时候较少，因此此类阅读题也没有同学们想象中的那么难，只要多加训练，就能较好地答题。【阅读策略】 1、概要(Summarizing)：  阅完材料后，将所阅材料浓缩，摘要，做出所阅材料的书面或口头梗概。 2、组织(Organization)：  阅读后根据阅读内容，识别观点、人物、事件之间的关系以及文章的结构关系。如：时间关系、比较或对比关系、相关关系及因果关系等。