1). 作为高科技产品；这款手机在国内外被广泛地使用。

2). 主要功能：通话、发短信、上网、照相、玩游戏等。

3). 体积小,重量轻易携带,适用于各年龄段人群。

注意：词数100词左右（开头已给出,不计入总词数）。

Being a product of high technology,……

假设你叫李华，你校高二同学正在开展一场讨论，主题是: 高中学生要不要参加体育锻炼。请根据下面所提供的信息，给英文报社写一封信，介绍讨论情况。

55%的同学认为：

应该每天进行体育锻炼；

做早操，打乒乓球、打篮球，但不要时间过长；

锻炼能增强体质，减少疾病；

锻炼能使大脑休息，使学习效果更好。

45% 的同学认为：

锻炼浪费时间;

锻炼容易使人疲劳；

锻炼以后很兴奋，较长时间不能投入学习；

锻炼中途可能会受伤。

写作要求：1. 可适当增加细节，使行文连贯。2.表达清晰。3.词数100左右。4.开头结尾已写出，不计入总词数。

参考词汇：build their body and reduce lot of diseases. 增强体质，减少疾病;

a waste of time and tiring          浪费时间, 使人疲劳

be hurt  受伤

Dear Editor,

    I'm writing to tell you about a discussion we've had about whether students should take physical exercise.

    ……

Yours sincerely，

Li  Hua

1）看起来像真人一样；

2）可以帮助做许多事情：做家务、做饭、帮儿子做作业，陪主人外出购物等；

3）你的担心：出了毛病不听指令，伤害儿子；

4）对未来的展望。

注意：⑴用第一人称。  ⑵字数120词左右。

The Possible Health Dangers of Air-conditioners

Although many of us may feel air-conditioners bring relief from hot, humid or polluted outside air, they pose many potential health hazards. Much research has looked at how the movement of air inside a closed environment—such as an office building—can spread disease or expose people in the building to harmful chemicals.

    One of the more widely publicized dangers is that of Legionnaire's disease, which was first recognized in the 1970s. This was found to have affected people in buildings with air-conditioning systems in which warm air pumped out of the system' cooling towers was somehow sucked back into the air intake, in most cases due to poor design. The warm air, filled with bacteria, was combined with cooled, conditioned air and was then circulated around various parts of the building. Studies showed that even people outside such buildings were at risk if they walked past air exhaust pipes.

    Large air-conditioning systems add water to the air they circulate by means of humidifiers. In older systems, the water used for this process is kept in special reservoirs, the bottoms of which provide breeding grounds for bacteria which can find their way into the ventilation system. The risk to human health from this situation has been highlighted by the fact that the immune systems of approximately half of workers in air-conditioned office buildings have developed the ability to fight off the organisms found at the bottom of system reservoirs. But chemicals called “biocides” are added to reservoirs to make them germ-free, and they are dangerous in their own right in sufficient quantities, as they often contain compounds strongly linked to cancers.

    Finally, it should be pointed out that the artificial climatic environment created by air-conditioners can also affect us. In a natural environment, whether indoor or outdoor, there are small variations in temperature and humidity. Indeed, the human body has long been accustomed to these normal changes. In an air-conditioned living or working environment, however, body temperatures remain well under 37℃, our normal temperature. This leads to a weakened immune system and thus greater exposure to diseases such as colds and flu.

How to Deal with Pressures at School

    As a high school student, if you are feeling stressed out or frustrated (沮丧的) by teachers, classmates, or schoolwork, it is important to know that you aren't the only one. Believe it or not, everyone has these feelings at some point and everyone should learn how to deal with them properly.

    First of all, you need to keep a positive attitude and not take things to heart. That someone got a better grade than you doesn't mean that they are smarter-perhaps they studied longer or knew the material more. It's easy to become frustrated if you are not doing as well as your friends, but being optimistic will help you deal with future similar situations.

    Secondly, if students at school are bullying (欺侮) you, don't let them make you feel that you are not good enough. They are simply insecure and do not know how to deal with the pressures of school. They are just trying to make others feel bad, so they can feel better about themselves. So it's of importance to know when to stand up for yourself.

    Lastly, it is necessary to keep things in perspective. For any situation that is stressful, take a second look from a different point of view. When I look back to the frustrations of my high school days, I notice that many of them seem very unimportant to me now.

    It's not easy to be confident when there are so many students who seem like they "have it all", but try to realize that you, too, are good enough. It's not a competition about who is smarter, more popular. or more beautiful- everyone is different- so embrace your individuality (个性).

Robotic Exoskeletons

Thanks to robotic exoskeletons, victims of spinal cord (脊髓) injury have a new reason to hope. Robotic exoskeletons, consisting of metal legs, motors, batteries, wiring, a controller and a set of strips work together like the user's bones, muscles and nerves-outside the body. Fastened into an exoskeleton and supported by sticks, users can direct the machinery to take them where they want to go.

In addition to partly restoring mobility, robotic exoskeletons offer the significant mental and physical health benefits of standing up and moving. Just being able to get up from a wheelchair gives patients a more natural, positive view of the world. It also helps relieve pressure on patients' skin and reduces the danger of pressure sores. Standing upright strengthens a disabled person's muscles and bones, improves heart health，and reduces certain other health complications (并发症). And it may actually result in partial nerve repair, something that can only happen when a patient is able to move.

As promising as this technology is, however, it is no simple cure-all for paralysis(瘫痪) or its complications. The motion is not accurate compared with natural walking, and exoskeletons are not easy to use, especially on surfaces that are not smooth. They are very expensive, costing about US$100000. Health insurance plans and government programs may not cover the cost of buying one.

Nevertheless, robotic exoskeletons, and access to them, will continue to improve. As with much modem technology, robotic exoskeletons will likely become more capable and easy to use, even as their cost goes down. Governments and insurers may increasingly see that the health benefits of these walking machines outweigh the costs, making it easier to fund them. Perhaps the day will come when nearly everyone paralyzed by spinal cord injury will be able to "walk" again.