What people Dont Know about Air

Most of them travel 40,000 miles to a satellite and then back to earth. Ten years ago, a satellite was capable of receiving and transmitting more than 33,000 telephone conversations simultaneously1.  Now a single satellite is able to transmit over l00,000 conversations as well as several television channels -- all at the same time.        Telecommunication2 can make information from around the world available to use quickly and easily, but some people worry that this may be a risk to our privacy3. If personal information is stored in computers, then it may be easily transmitted via satellite to anyone who can pay for the service.        Another worry is that telecommunication systems may isolate4 people from each other. When people are able to shop from their homes, do their banking5 without leaving the house, watch any movie they want on their television, as well as get any information they need, then there will not be as much contact between people.   It is important to realize that the same technology that helps us may also harm us. We can prevent this from happening by carefully controlling the new technology. As one telecommunication expert says, We must remember that technology alone is not the answer...It is (the intelligent application of technology) that will lead us to success.   It+be+强调部分+that(who)分句   It is my brother who is listening to the jazz.   It was in Beijing that they met each other for the first time.           LESSoN EIGHT (B)      TEXT  B          What people Dont Know about Air       The air around us is important to everyone. Without air, we could not exist.(subjunctive) Everyone understands that. But air is necessary in many other ways -- ways that are not always so obvious or widely known.   For example, if we did not have air, there would be no sound. Sound travels through air. Where there is no air,(状从) there is no sound.(主句)           The letter can be written with pen and\or ballpen.   Gasoline=gas station   Stare at=fix at   Create---creative---creation---creativity   Elementary   Depend on\upon   Rely on\upon   If we didn’t have air, we could not exit.

1 simultaneously   

adv.同时发生地，同时进行地

参考例句：

• The radar beam can track a number of targets almost simultaneously.雷达波几乎可以同时追着多个目标。
• The Windows allow a computer user to execute multiple programs simultaneously.Windows允许计算机用户同时运行多个程序。

2 telecommunication   

n.电信，远距离通信

参考例句：

• Telecommunication is an industry of service.电信业是一个服务型的行业。
• I only care about the telecommunication quality and the charge.我只关心通信质量和资费两个方面。

3 privacy   

n.私人权利，个人自由，隐私权

参考例句：

• In such matters,privacy is impossible.在这类事情中，保密是不可能的。
• She wept in the privacy of her own room.她在自己房内暗暗落泪。

4 isolate   

vt.使孤立，隔离

参考例句：

• Do not isolate yourself from others.不要把自己孤立起来。
• We should never isolate ourselves from the masses.我们永远不能脱离群众。

5 banking   

n.银行业，银行学，金融业

参考例句：

• John is launching his son on a career in banking.约翰打算让儿子在银行界谋一个新职位。
• He possesses an extensive knowledge of banking.他具有广博的银行业务知识。