What will our world be like in 2050？We asked a group of experts to make their predictions about our future．

    By 2050 we will have"clever"{#blank#}1{#/blank#}．We won't have so many accidents，{#blank#}2{#/blank#} they will be able to communicate with each other．Cars will slow down by themselves or stop in{#blank#}3{#/blank#} situations．Also，our cars will {#blank#}4{#/blank#} on electricity or water．

    By 2050 our homes will be more eco﹣friendly （环保）．We will use solar （太阳的） energy，and we will clean and {#blank#}5{#/blank#} our water．There will be many more people in the world {#blank#}6{#/blank#}our houses will be smaller．Many houses will be underground and we will have {#blank#}7{#/blank#} to help clean，cook and do {#blank#}8{#/blank#}home shopping．

    We won't die!We will put our brains onto computers and live {#blank#}9{#/blank#}．The computers of the future won't look like machines．They'll look like humans．

    By 2050 there will be too many people on the earth and {#blank#}10{#/blank#}100 million people will be living on the moon and other planets．We will be able to travel to Mars and back in just three days．

A: Andy, how did you spend your holiday?

B: Well, I travelled to Beijing and spent a happy holiday.

A: Great! I look forward to going to Beijing. Tell me something interesting about it.

B: OK. There are a lot of {#blank#}1{#/blank#} and modern {#blank#}2{#/blank#} in Beijing. I visited many {#blank#}3{#/blank#} such as the Great Wall, the Palace Museum and the Summer Palace.

A: I {#blank#}4{#/blank#} about them. They are very famous. How long did you stay there?

B: I spent a week staying there.

A: Did you enjoy yourself?

B: Yes, of course. I enjoyed not only its beautiful {#blank#}5{#/blank#} scene, but also the delicious food.