[10-20 18:10:12] 来源：http://www.67xuexi.com 高二英语 阅读：85586次
Unit 19
1. It was predicted as early as the 1700s that English would one day be the global language.
2. In today’s world, being able to speak more than one language, including English, is how you stand out and get ahead.
3. Learning English as a foreign language is very difficult in the absence of a native language environment.
4. Quality input ensures quality output, whether it is speaking or writing.
5. Experts say that just 15 minutes of extra-curricular study a day can really accelerate foreign language learning.
6. Knowing the main stories before reading will guarantee greater comprehension when reading in English.
7. To stay dedicated, you need to keep in mind why you are learning English. 8. Quite simply, in today’s world, English holds the key to a brighter future and a world of possibilities.
9. You would know what was going on because you understood the message conveyed by the father’s body language.
10. Body language is a language without words that consists of gestures, facial expressions and body movements that greatly add to---and sometimes even replace—spoken language.
11. Somebody jumping for joy is easy to see while a raised eyebrow conveying doubt is easier to miss.
12. Learning to be aware of your body language can be a very useful tool.
13. In foreign countries, it is very easy to purchase something simple by smiling
and pointing at what you want.
14. Although every culture around the world uses the same gestures and expressions,
they use them in different ways.
15. Regardless of these differences, experts agree that across the globe there is one form of body language that receives universal approval—the smile.
Unit 20
1. The seminar starts on Friday and the experts will be discussing the endless possibilities of the future.
2. The future is now big business and many people will attend the seminar with dreams of starting new enterprises based on the predictions they will hear this weekend.
3. By the middle of the century, computers that are millions of times smarter than us have been developed.
4. By the year 2015, the clothing industry will have produced new types of material that will remain stainless no matter what you spill on them.
5. By the year 2025, no one will die of starvation because there will be food for everyone.
6. By the year 2030, development in biochemistry and medical science will have made it theoretically possible for us to live for at least 150 years.
7. At nine o’clock on Saturday morning, I will be sitting in the front row and listening to the great Professor Willard talking about the future of my brain.
8. Although it is impossible to choose the most important discovery, it is possible to single out a few pioneers of the 20th century.
9．He double-checked and saw a blue mould in the dish around which the bacteria had been destroyed.
10. The navy turned to Eckert, an engineer, and Mauchly, a physicist, to wrestle with the problem.
11. It used so much energy that when it was turned on, the lights in the local town went out!
12. These pioneers of the 20th century were all dedicated to improving the quality of human life on earth.
13. Sometimes breakthrough discoveries that have affected our lives today happened by mistake!
14. There is no doubt about it.
15. Without the breakthroughs of these pioneers in science and technology, whether lucky or planned, the world as we know it today would have been a completely different place.
Unit 21
1. Many contemporary amateur athletes would have broken world records if they had taken part in the first Olympic Games.
2. If records fall, it is usually due to better equipment, training and diet, but recently, improvements have begun to slow down.
3. Ben Johnson would still be the 100 meters world record holder if he had not been caught taking drugs in the 1988 Olympics.
4. New drugs are developed all the time and drug tests for sporting events are often one step behind.
5. These drugs are originally developed to help people with illnesses, but in the wrong hands, they create supreme athletes making them faster and stronger than is normal for human beings.
6. Doping is not only a problem in athletics, it is part of every sport where athletes seek to achieve beyond their natural limits and are prepared to cheat to do so.
7. The Olympic spirit—the spirit of competition which emphasizes taking part rather than winning – has been violated by the desire to success at all costs.
8. Since SARS ended, scientists have been doing trials on treatment to prohibit any future outbreaks.
9. Countries will need to work together to do this as the SARS epidemic proved how teamwork among nations can save lives.
10. With all the international effort being made, we have to have faith that there will be solutions in time to stop a Bird Flu epidemic in its tracks.