阅读理解。 How to wash clothes in a flash LAUNDRY is never an easy part of

题文

阅读理解。  How to wash clothes in a flash LAUNDRY is never an easy part of houwork. But if piles of sweaty (汗水浸湿的) T-shirts and smelly socks drive you crazy, then two Chine scientists might have the answer.Long Mingce and Wu Deyong of Shanghai Jiao Tong University have invented a kind of cotton that cleans itlf. No need for soap or water, the scientists say. All you have to do is put the clothes out in the sun.According to the Guardian, this magical lf-cleaning ability comes from a special chemical mixture. The material is covered with this mixture. It can break down dirt and remove bad smells after only a few hours in the sun.One of the chemicals is called titanium dioxide (二氧化钛). Scientists have known for some time that titanium dioxide can clean fabrics (织物). However , it only works under ultraviolet (紫外的) light and so is not yet widely ud - ultraviolet light cannot be en.   "We knew that lf-cleaning cotton fabrics with titanium dioxide coating had already been developed, but they cannot work, or they work weakly, under sunlight," Long said. "If we want to u the fabrics in daily life, we must develop cotton that cleans itlf under daylight."   The scientists worked hard for years to find a better chemical. Finally , they added silver iodide (碘化银) into the mixture. This made the chemical reactions in sunlight faster. The new mixture is also nearly ven times better than the former one with pure titanium dioxide at removing dirt and killing bacteria.   The experiment was only carried out on cotton clothing. However, according to Long, the technology can be "applied to all kinds of fabrics and their related products." It is also cheap and environmentally friendly , he said.    The lf-cleaning material is not yet ready for the market. Scientists still need to know whether it could harm people. Although titanium dioxide is ud in some foods, it can cau health problems if it gets into the lungs (肺). Scientists need to make sure it is safe before we can start to enjoy the benefits of this technology .1. Thanks to this new discovery, we will be able to clean fabrics ___ .A. using soap and water   B. using silver iodide  C. using sunlightD. using moonlight2. In what way is the new material better than previous materials ?A. It works using any kind of light.   B. It works more quickly and effectively. C. It is widely found in nature.   D. It can be ud for all kinds of fabrics .3. What might be a problem with the lf-cleaning material ?A. It will cau pollution.   B. It costs too much to produce.C. It breaks down easily in the sun.   D. It might cau health problems4. Which of the following statements is TRUE?  A. There may be many other kinds of lf-cleaning fabric in the future .B. We can already buy lf-cleaning clothes on the market.C. This was the first time that scientists discovered titanium dioxide.D. Titanium dioxide is widely ud in the food industry. 题型：未知难度：其他题型

答案

1-4: CBDA

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考点

据考高分专家说，试题“阅读理解。 How .....”主要考查你对 [日常生活类阅读 ]考点的理解。 日常生活类阅读

日常生活类阅读的概念：

日常生活这一话题主要涉及人们衣食住行等方面的活动。这一话题的选材主要针对人们日常的工作，生活以及学习情况。做这一类题时，最主要的是要把握好人物的活动内容，时间和地点。

日常生活类阅读题答题技巧：

【题型说明】该类文章内容涉及到人们的言谈举止、生活习惯、饮食起居、服饰仪表、恋爱婚姻、消遣娱乐、节日起源、家庭生活等。文章篇幅短小，追根溯源，探索各项风俗的历史渊源，内容有趣。命题也以送分题为主，如事实细节题、语义转换题、词义猜测题和简单推理判断题等。虽然这类文章读起来感觉轻松，试题做起来比较顺手，但绝不能掉以轻心。因为稍不留神，就会丢分。 【备考提醒】为了保证较高准确率，建议同学们做好以下几点： 1、保持正常的考试心态。笔者在教学中发现，越是容易的试题，同学们越是容易失分。为什么呢？因为在这种情况下，同学们极易产生麻痹思想，认为题目好做，就不引起高度重视，于是思维不发散、不周密。而命题人就是利用同学们的这一弱点，设计陷阱题。所以，无论试题难易与否，我们都要保持正常的考试心态。试题容易，不欣喜；试题难，不悲观。 2、根据前面讲到的方法，认认真真、细细心心做好事实细节题。 3、做好语义转换题。这类题是根据英语中一词多义和某些词语在文中能表达一定的修辞意义的原则而设计的。要求同学们解释某生词的含义，确定多义词或短语在文中的意思，确认文中的某个代词所指代的对象，或者对英语中特有的表达、格言、谚语进行解释。这种题要求同学们一定要根据上下文猜测词义或理解句子，切不可望文生义。 4、做好简单推理判断题。简单推理判断题要以表面文字为前提，以具体事实为依据进行推理，做出判断。这种推理方式比较直接，只要弄清事实，即可结合常识推断出合理的结论。