一个人承受压力的大小在很大程度上要看个体之间的差异。有些人不怕压力，这种人是承担管理性责任的上好人选。而另一些人一碰到非同寻常的问题就泄了气。我们面临任何形式的压力时，都会产生化学的和物理的反应。事实上，我们会做出“逃避还是迎战”的选择，在以前这就是生与死的选择。我们今天遇到的危机不大可能如此极端，但是无论压力多么微不足道，我们对其反应是一样的。只有当连续不断的压力，使我们长时间持续对它做出反应时，我们的健康才会受到危害。高血压、心脏病等严重疾病与压力有关已经无可辩驳。既然我们无法在生活中摆脱压力(即使可能，这样做也是不明智的)，我们就需要找出对付压力的办法来。
Speaking Effective American English

On job interviews when first conversing with an individual and when addressing small or
large groups, the first few seconds are critical in setting the tone for how you'll be perceived. If she has an annoying regional accent, uses incorrect grammar, has a limited vocabulary, and if she has an irritatingly sharp piercing voice, sounds whiny or bossy or doesn't articulate her words clearly, it' s an immediate turn-off. This isn't someone who you would hire or proudly introduce to your friends and business associates. This doesn't mean that everyone should try to sound like a professional actor or broadcaster. All of us have qualities unique to our own way of speaking, our individual voiceprint
as distinctive as our fingerprints. Our voice is very personal and an important part of our identity. Some natural characteristics of our voice may be very appealing.

The idea is to take the voice with which you've been gifted and give it the very best sound that you can. With the right type of practice, by paying attention to the quality of your voice and by knowing how to properly express yourself,you' II almost immediately improve your opportunities in job interviews, social situations, in selling, and in running a meeting or addressing groups of people.

Let' s say it again, it all begins with the instrument, your voice. If its sound and quality is flawed and needs improvement, that' s where you start. That' s what everyone hears whether in casual conversation or in making a major speech to a large audience. Pure vowel sounds, articulation, proper breathing, expressive speaking patterns, a pleasing vocal range, naturalness, all these will make you get twice the result with half the effort.
说一口地道的美国英语

求职面试时，当你与他人第一次交谈时或在与少数或许多人谈话时，开始的几秒钟是重要的，因为它决定了别人对你的印象。如果她有严重的地方口音、语法错漏百出、词汇量有限，如果她声音刺耳，听起来像与人抱怨或发号施令或者吐字不清，就会立即引起人的反感。你不会雇用这种人或把这种人自豪地介绍给你的朋友或同事。但这并不是说每个人说起话来要像专业演员或播音员那样标准。我们每个人说话都有自己独特的方式，我们各自的声音就像我们的指纹一样独特。我们的声音是个性化的，而且它是我们身份的重要特征。我们声音的一些自然特质也许非常吸引人。

现在的观点是利用你声音的天赋，尽量使其悦耳动听。只要适当练习，注意你的音质，了解合适的表达方式，你就能在求职面试、社会交往、推销、组织会议或在众人前发言时立刻获得更多的机遇。

在此要强调的是，一切从你的声音这个工具开始。如果你的声音和音质有缺陷，需要改进，这就是你的出发点。因为无论在闲谈时或在对许多听众演讲时，你的声音首先为人熟知。元音字正腔圆，发音清晰，呼吸匀称，表达方式合适，音域悦耳，说话自然，所有这些都会使你事半功倍。
The Difference between a Brain and a Computer

~he difference between a brain and a computer can be expressed in a single word: complexity.

Even the most complicated computer man has yet built can't compare in intricacy with the brain. Computer switches and comportents number in the thousands rather than in the billions.What's more, the computer switch is just an on-off device,whereas the brain cell is itself possessed of a tremendously complex inner structure.

Can a computer think? That depends on what you mean by"think". If solving a mathematical problem is"thinking',then a computer can"think'and do so much faster than a man. Of course, most mathematical problems can be solved quite mechanically by repeating certain straightforward processes over and over again. Even the simple computers of today can be geared for that.

Surely, though, if a computer can be made complex enough, it can be as creative as we are. If it could be made as complex as a human brain, it could be the equivalent of a human brain and do whatever a human brain can do.

But how long will it take to build a computer complex enough to duplicate the human brain? Perhaps not as long as some think. Long before we approach a computer as complex as our brain, we will perhaps build a computer that is at least complex enough to design another computer more complex than itself. This more complex computer could design one still more complex and so on and so on and so on.hxw.red