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Unit 6:
While it is impossible to know exactly __ the future will be like, it is possible to use __ and __ to make __about future developments.
Future __ is going to be cleaner, faster and safer. New __ is being used to develop __ friendly and __ means of transportation, __ the maglev train. __ are also working on new fuels and engines. The way we do business will change too. Shopping is no longer just a __. __ is becoming an important part of shopping and people will __ shopping with fun.
__ in medical science will allow us to live longer and be __. People are paying more __to health eating and regular __. With a better understanding of the human body, some diseases will be eventually defeated. Education will become even more important than it __ today. __ education will make “school on the air” more popular. The way people __ learning is also changing. We will need to become __ learners.
The best way to prepare for the future is to learn to accept and __ changes.
Unit 7
AIDS is a disease that ______the body’s ____ and leaves a person ______ against infections and illnesses. Once a person ____ AIDS, he or she usually dies from the disease within a few years. There are medicines and treatment ____, but they are expensive and don’t ____ the disease absolutely. People get AIDS after having ____ HIV, the virus that causes the disease. HIV is ____ through blood and other body liquids and ____ through unprotected sex, infected blood transfusions and through birth.
Xiaohua was infected through birth. Though she knows her life will be short, she has decided to use her ____ time to do something meaningful. She spends much of her time trying to help other AIDS patients. Together with doctors and hospitals, Xiaohua is trying to change the way people ____ and treat AIDS patients. The disease does not discourage her. On the contrary, it makes her realize how ____ life is and how important it is to live life ____.
Unit 8
People who have ____ accidents often wish that they could do something to help. Seconds ____ in an emergency, and knowing what to do can save lives. The letters&nb
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