What will our cities be like in 2050? How much will artificial intelligence advance? Some scientists     1     (make) different predictions recently.

Joel E.Cohen from the The Rockfeller University says    2     is likely that by 2050 the majority of the people in the world will live in urban areas, and will have a    3     (significant) higher average age than people today. Cities will be     4     only realistic solution to housing a population that will expand     5     9.7 billion by 2050.

And the technology is expected    6     (advance) rapidly. According to Bill Michell, the late director of MIT Media Lab’s Smart Cities research group, cities of the future won’t look like “some sort of science-fiction fantasy’’ or “Star Trek’’, but virtual (实质上) reality will change    7     we live. Self-driving cars will make the roads more secure, driving more efficient, and provide     8     (fast) transport.

Charles Ebinger at the Brookings Institution thinks that by 2050 we will also have a so-called “smart grid” where all of our    9     (appliance) are linked directly to energy distribution (分布) systems,     10     (allow) for real-time pricing based on supply and demand. Such a technology would greatly benefit most people and reduced the consumption (消耗) of fossil fuel energy.

Get ready and you will enjoy a space travel. The sky outside your spacecraft is     1    (most)black. The planet you’re looking for is 4.65 billion miles away. Almost no light     2     (reach) it. Suddenly you see a glow (暗光) in the     3     (distant). As you approach, it becomes bigger and stranger. The light     4       (shine) ahead of you is bright pink. Getting closer, you realize     5     is giving off this glow. It’s a magenta (紫红色的) planet!

    6     (name) GJ 504b, the planet is made of pink gas. It’s similar to Jupiter, a giant gas planet in our own solar system. But GJ 504b is four times more massive. At 460°F, it’s the temperature of a hot oven, and it’s the planet’s intense heat that causes it     7     (glow).

You stop your spacecraft to take     8     close look. The sky turns pink as you enter GJ 504b’s atmosphere. Since GJ 504b is made of gas, it has no solid surface. So you can fly right inside the planet, in which the gas envelops you like a thick fog. As you go     9     (deep), the gas begins to get darker. If you keep going down, your spacecraft could melt from the heat. You get away from this pink world and back     10    the darkness of outer space.

Have you ever forgotten     1     (lock) the door of your house? Or, have you ever forgotten to switch off the TV or computer? These kinds of things happen to us all the time, waste resources, and can sometimes lead     2     problems.

However, in the not-too-distant future, we will     3     (live) in smart homes that will lock the door for us when we are away and remember to switch off the TV when we forget.

You will no longer have to think about turning     4     (switch) on and off yourself. Your home will also learn your     5    (day) routine and preferences, so everything will be ready for you when you get home each evening. Your lights will come on     6     instant you enter the door along with your favourite music or TV programmes, and you will find your dinner already     7     (prepare) for you.

In addition, your smart home will be monitoring your health for you every day. If you start to have sleep or weight problems, it will send a warning to your phone. It will also give you suggestions on a     8     (health) diet and     9     to sleep better. Smart toilets will be keeping constant track of your health as well. They can warn you early on if there is something     10     (normal) or if you have a critical illness, such as cancer, and potentially save your life.

Smart homes will be able to prevent serious damage from accidents. Nevertheless, it will take some years before most new homes begin to use this new technology.

The Future Life on Mars

Compared with the life we    1     (live) on the earth now, the future life on Mars will be     2    (total) different.

Firstly, without pollution on Mars, people will be able to drink cleaner water    3     breathe fresher air, so they will be    4     (health).The food on Mars will be     5    (differ) from our food now. People will just take    6     (pill) and drink man-made juice instead of eating bread and meat. Secondly, people will travel back to the earth or to other planets for sightseeing     7     spaceship. Additionally, there will be no     8     (fix) school and classrooms. Children will just fly to     9     classroom in the school spaceships. And people won’t work in factories or companies. They can stay at home,     10     (work) with computers.

Robots have been widely used in our daily life. They can be     1     (see) in many factories today and have gone to such far places as     2     moon. Some robots can” see"     3    ( clear). For they use TV cameras as their     4     (eye), Many robots have computer brains, Now they have even come into       5       (we) homes and work as       6     (help) at home , Not only can they do simple jobs for us ,such as     7       (put) things into boxes , but also they can look    8     babies Unlike human beings       9     needy sleep, robots can work 24 hours a day. In the future, with the aid of robots, our life will become much     10     (easy) than before.

Last year I won a prize in a competition． I    1    （award） a journey to AD 3008． Worried about the journey， I was nervous and    2    （certain） at first． Luckily， my friend and guide， Wang Ping， was very understanding and gave me some green tablets     3    helped a lot． Well-known for their expertise， his parents' company，    4    （call） "Future Tours"， transported me safely into the future in a time capsule．

I can still remember    5    moment when I lay relaxed in the comfortable seats after a calming drink as the capsule swung     6    （gentle） sideways． During the journey， the air seemed thin as if    7    （it） combination of gasses had little oxygen left． The new surroundings were difficult for me to tolerate， so Wang Ping suggested me putting on a mask which made me feel much better． In no time， I was back on my feet again．

When    8    （arrive） at a strange-looking house， I was shown by Wang Ping into a large， bright clean room， whose wall was made    9    trees． Later I found that their    10    （leaf） provided the room with much-needed oxygen． After a while Wang Ping left． I had a brief meal and a hot bath． Exhausted， I slid into bed and fell fast asleep．