1 . We don’t know how different our future will be in the future. We can only try to imagine it.
At first we think about human relationship. In the year 2050, we will use computers almost every day. We will be making new friends through the Internet—even our husbands or wives will be met in this way. It will be much faster and easier for us. On the other hand, our relationships with people won’t be as important as they are today—we will feel a little lonely.
Computers will also help us in many other activities in 2050. For example, they will be used by the children at school to make their learning easier. In addition, there will be much more other machines which will play the same role as computers, like robots which will do the housework for us.
Spending holidays will also be completely different. Traveling to other planets or to the moon will be possible for everyone. Means of transport will, of course, change, too. We will be using solar-powered cars, which will be much more environmentally friendly(环保).
Some of us may think that the faster technological progress would lead to a more polluted environment. But it isn’t true. We will pay more attention to protecting the environment. And, scientists will probably find cures for many dangerous diseases, like cancer or AIDS. Then, our surroundings as well as health will be in better condition.
Although we can’t predict（预测）the exact changes which will be made in the world, we often think about them. We worry about our and our children’s future; we have hopes as well as fears. But I think we should be rather sanguine about our future. We should be happy and believe good things will happen.
1. Why will people probably feel a little lonely in 2050?| A．Because the number of people will become much smaller. |
| B．Because there will be less face-to-face communication. |
| C．Because people won’t like making friends with each other. |
| D．Because people won’t communicate with each other much often. |
| A．that computers will do all the things for human beings |
| B．how people will use computers to communicate with each other |
| C．that machines like computers and robots will help people a lot |
| D．how people will use robots to do the housework |
| A．The relationship between people will be more important than today. |
| B．The way of spending holidays will be the same as that of today. |
| C．It won’t be difficult for people to travel to other planets. |
| D．Our environment will be much more polluted with a growing number of cars. |
| A．disappointed | B．surprised |
| C．sad | D．optimistic |
2 . What if we had the power to control time, instead of moving from the past to the present to the future? What if we could jump, loop and travel through time in a machine? What if we could go wherever and whenever we pleased?
This ability would allow us to witness historic wonders, change decisions and see people from the past. We could right wrongs and stop wars from starting.
The mysterious puzzle of time has kept people debating its nature for hundreds of years. Science fiction writers have turned it into imaginative stories. Some scientists have even attempted to explain it using math. This math tries to make the dream of time travel come true.
The scientist Albert Einstein said that time and space are one thing. He called it “spacetime.” Einstein said that there are three dimensions in space: height, width and depth. A scientist named Hermann Minkowski added time as a fourth dimension.
Einstein introduced two ideas that have led to theories about the possibility of time travel. The first is relativity. The idea of relativity is that the force of gravity causes space to bend, which causes time to twist. The second idea focuses on special relativity. The idea is that a traveler moving super-fast through flat spacetime will enter the future. Einstein considered time “relative” because it is measured based on where we are on Earth or in space.
Stephen Hawking is a famous scientist. He believes that a time machine will never be built. If it were possible, he thinks we would already know. If a time machine could be built, how come no one from the future has invaded us?
The first science fiction story with this theme is The Clock That Went Backward by Edward P. Mitchell, which was published in 1881. Since then, thousands of books, films and television shows have explored the idea of time travel, in which some tools such as phones, watches, photographs and old books take travelers backward and forward.
Will time travel ever happen? Who knows? Most important is to keep your eyes open and have a sense of wonder.
1. What is the author’s purpose of writing the first paragraph?| A．To show time and space are connected. |
| B．To show people’s interest in time travel. |
| C．To draw readers’ attention to time travel. |
| D．To make people believe time travel is possible. |
| A．Time travel is possible in the future. |
| B．People can’t move faster than light. |
| C．Time travel is against scientific rules. |
| D．Spacetime is not a real thing in theory. |
| A．The first science fiction story. |
| B．Some tools used in time travel. |
| C．Edward P. Mitchell, the pioneer. |
| D．Different works about time travel. |
| A．cautious. | B．pessimistic |
| C．sceptical | D．optimistic. |
