【文章內(nèi)容簡(jiǎn)介】 l have been developed， permitting long journeys throughout the solar system(太陽系 ). When that time es， people will be taking holidays in space and visiting other plas. Great progress will have been made in medicine， too. Perhaps a cure will have been discovered for the most terrible of all diseases— cancer. Pollution is a problem we must solve. In hundred’s years’ time it will have been controlled . All the world will have been developed — even Antarctica. There will be large cities in Antarctica. We already have supersonic(超音速的 ) flight， but in a hundred years’ time we will have supersonic land travel as well. We will have used up most of earth’s land to build our cities ， so floating cities will have been built. The Japanese already have plans for cities of this kind. And there will be cities under the sea. The first of these will have been pleted. 40. We will have developed ______ in a hundred years’ time， permitting long journeys all over the solar system. A. cheap rockets for space travel B. a plane C. a spaceship D. a satellite 41. Man will also have supersonic land travel ______ . A. in a year B. about half a century later C. in the year 2050 D. about a century later 42. The last paragraph mainly talks about ______ . A. we’ll make good use of space on the earth B. cities under the sea C. Japan will first build floating cities D. earth’s land is in danger 43. The best title for the passage is ______ . A. Travel in the Future B. Future Life C. Where to Live in the Future D. Space Travel C Some people are pessimistic(悲觀的 ) when they think about the future. They say that， a hundred years from now， we will have used most of the earth’s resources . We will have polluted our seas badly， and be unable to eat fish from them. We will have made the air so dirty that we will need to wear masks. The world’s population will have doubled， and we will have used all the countryside for housing。 there will be no farmland left. Other people believe that Man adapts very easily. They have a different idea of the future. How， in their views， will people be living in a hundred years’ time？ One architect believes that Man will move off the land. He suggests that the city of the future will be a huge， pyramidshaped building， which will be floating on the surface of the sea. About 5， 000 families will be living there， and the building will contain shops and schools as well as homes. By living on the sea，we will give the farmers more land to grow crops. As for oil， people will no longer need it: we will be heating our homes with power from the sun. And we will not be short of minerals， because there are plenty under our oceans. At the moment， we do not have the technology to get them out. But， in a hundred years’ time ， the optimists say， the new sea cities will be using these resources. What will be in the shops in the year 3000？ What will people be wearing？ How will people be traveling？ Scientists who make predictions about the future suggest that， by the year 3000， shops will no longer exist. Computers will have replaced them。 and people will order goods from home. People will be wearing very light, thin clothes. By this time, scientists will have invented a fabric that keeps us cool in hot weather and warm in cold weather. As for travel， the experts say that most people will be using public transport. Electric cars will be traveling through the streets day and night. Anybody will be able to stop one and use it. An interesting picture. Unfortunately, we will not be there to see if these predictions e true. 44. Pessimists believe that in the future ______ . A. the seas and oceans will be full of houses B. we’ll have used up all the resources C. we will not have enough fish to eat from the seas D. we will have polluted the air so badly that it will be impossible for us to breath 45. Optimists suggest that ______ . A. all the land will be too polluted to be cropped on B. pyramids will be the most monlyused houses C. people will be using the power from the sun instead of oil D. we will be short of materials even though we get them from under the oceans 46. Scientists have made the predictions EXCEPT ______ . A. electric cars will be going along the streets continuously B. the resources under the oceans will never be used up C. people will order from home D. people won’t suffer from co ld any longer D The new model is the highly interactive（互動(dòng)的） learning m