Cars will run on solar power or electricity and will be much cleaner. 【小题1】 For example, if you are too close to another car or if you are driving dangerously, your car will slow down by itself.

Since there won’t be any spare place, new cities will have to be built in the sea. 【小题2】 People will live on the upper floor; the lower floor will be used for traffic, shops and factories.

【小题3】 Plants that are not influenced by insects (昆虫) or illnesses will be developed. The taste of fruit and vegetables will be better and food will be kept longer.

New technology will be used to make TVs that are only 5 cm thick. 【小题4】 Electrical appliances (电器) will be quieter and will be controlled by computers. They will also use 50% less power.

Many new ways to treat illnesses will be successful using products of genetic engineering (基因工程). Treatments will be found for the flu (流感) and the common cold. However, some new illnesses will appear.