In some science fiction movies, evil robots refuse to die, no matter how hard people fight back.

    Now science fiction has become science fact. For the first time, scientists have made a robot that can take a beating (挨打) and keep on going. Scientists from Cornell University made the robot, which looks like a spider with four legs.

    Until now, even the most advanced (先进的) robot was almost certain to break down when it was damaged. That is because its computer inside simply doesn't know how to make the machine work after its shape has changed.

    To deal with this problem, the scientists put eight motors (发动机) and two sensors (传感器) that read how the machine is working. They all give signals to the machine's software. Using this information, the computer can then figure out the machine's shape at any moment.

    The new technology is a big advance in robot-making, scientists say, and it's far from scary. It may someday help scientists create better artificial (假的) arms and legs and give new freedom to people who lose them. It might also help scientists understand how people and animals figure out their own sense of place in space.

    “It has been difficult to design robots that can work well when the environment changes or when it's damaged,” says Olaf Sporns of Indiana University in US. “With this work, we are nearer to solving this problem.”

Hello, everyone!

……

This is a nice room. I like my room very much.

Most American families like to have a vacation in summer. Summer is a good season for vacation. It is often hot in July and August.

Children do not go to school in those two months. Some people like to stay at home read books，do housework，or watch TV. Many families take their lunch to eat at a place with many trees or a nice lake. Some people have enough time and money to travel（旅 行）to other countries like France, Japan and Australia. They usually fly to these countries. Many families travel by car or train to see interesting plac‐ es in their own countries. Their favorite cities are New York, Chicago and Los Angeles. Not everyone likes to go to busy cities. Some families travel to mountains.

内容包括：（1）第一次见面时应该和不应该做的事情；（2）去朋友家做客时应该和不应该做的事情；（3）就餐时应该和不应该做的事情。

作文要求：（1）可适当使用本学期所学的be supposed/expected to do sth. 和it is adj. to do sth. 结构；参考词汇：shake hands，bring/take a gift，have dinner，on time. （2）不能照抄原文；不得在作文中出现真实校名、地点和考生的真实姓名；（3）语句连贯，词数80左右。作文的开头和结尾已经给出，不计入总词数。

Dear Nancy，

How is everything going？I'm glad to hear that you are coming to China. Let me tell you some customs in China.

 I hope that the advice is helpful. Please feel free to ask me if you want to know more. 

Yours，

Li Hua

The World Environment Day is an important event setting on June 5th every year. The earth{#blank#}1{#/blank#} all kinds of pollution and people from all over the world face great challenges. For {#blank#}2{#/blank#} people, we need to solve a lot of problems, such as growing population and air pollution. In order to make our living environment better, different {#blank#}3{#/blank#} need to be developed. For example, we can improve public transportation and search for new energy. We can control the birth rate and use resources(资源) {#blank#}4{#/blank#} . Remember: Work together, we can win a brighter future for {#blank#}5{#/blank#} .