【推荐1】Some people believe that humans could live on the planet Mars by the year 2100. Our own planet, the Earth, is becoming more and more c    1     and polluted because of the increase in population. It is hoped that people could start to b    2     a better world on Mars. Here is what life there could be like.

At present, our spaceship are too slow to carry large numbers of passengers to Mars-it would take months, with the development of t    3    , by the year 2100, the journey might only take about 20 minutes in spaceship that travel at the speed of light! However, the spaceship would travel so fast that the journey to Mars might be quite uncomfortable. Many people would f    4     ill.

Humans cannot survive (活下来) without water, oxygen or f    5    . So far, nobody knows whether there would be enough water or oxygen on Mars for people there. Moreover, scientists are not sure whether plants could g    6     on Mars. Food would most probably be in the form of pills (药丸) and would not be so tasty.

Gravity(重力) could be a    7     problem. The gravity on Mars is only about three-eighths of that on the Earth. People would have to wear boots that are specially designed(设计) to stop themselves from floating(飘) off into space.

C    8     with life on the Earth, life on Mars would be better in some ways. People would have more space. They might live in houses with huge comfortable rooms. What’s m    9    , robots would do most of their work so that they could have more time to relax. There would probably be no schools on Mars. Every student would have a computer at home connected to an interplanetary network, they would study at online schools with “e-teachers”.

Life on Mars would be i    10     as well as challenging(有挑战性的).

Do you like shopping? There are     1    （数个）ways of shopping. Some people think online shopping is     2    （简单的）. The shop owner is always     3    （乐意的）to help you at any time. After     4    （支付）for the products, you will     5    （收到）things a few days later     6    （用，靠）post. On November 11^th, there is usually a big sale and some people buy     7    （千）of products on the special day. Maybe something     8    （改变）in the future. For example, you can see how you look like in different clothes with 3D pictures when you shop online or even     9    （机器人）will send you the products. Anyway, I     10    （希望）online shopping will become more and more popular.

Look at the old man. He     1    （look）like the famous scientist Einstein. It is a robot which was     2    （invent）by American scientists. Although it has only a head and two shoulders, it can make different faces. Scientists also made many robots that are good at     3    （communicate）with people.

This kind of robot first     4    （appear）in America. It can not only know people’s feelings, but also guess people’s age. It even can make some simple human actions, such as     5    （shake）its hands.

Some scientists hope to make more robots with more actions just like human beings. They want to make more robots who are kind-hearted, understanding and     6    （care）about others. “It is very important to make such kinds of robots. We also hope they are as clever     7     us.” The famous scientist Hanson said.

But it is very hard to make such kinds of robots.     8     the cleverer the robots are, the more they will be refused. So the American scientists chose the head of the famous scientist Einstein. Because he was a     9    （peace）and kind-hearted old person. But this kind of robot is very expensive. It costs about 75 thousand dollars to make one Einstein robot. Hanson hopes one day     10     cost of making a robot can be only 200 dollars.