1     Finally,we arrived in Loulan after several days of travelling.It was a stopping point on the famous Silk Road between the East and the West.The ruins of the Loulan Kingdom were discovered by Sven Hedin who also discovered a lot of treasures.     2     这片沙漠曾经是一片大树成荫的绿洲，but they were cut down and that resulted in the city being buried by sand.

I want to speak to you about the state of the playground.     1    People are throwing their garbage everywhere. They leave garbage on the ground instead of using the garbage cans.       2    这对孩子们来说是一件危险的事情. Yesterday, a six-year-old kid fell and cut his hand on a broken bottle. Immediately,     3    the boy was taken to hospital. Also, the garbage makes the playground dirty and     4    没有人想去那儿

I would like you to handle this problem right away. For example,     5    you should buy more garbage cans and stop people from littering.

Please take my suggestions into serious consideration. I am waiting for your answer.

Best regards!

Jerry Broker

The target audience is high-school teenagers.     1     我们的目标是劝阻年轻人不要吸烟。Our research shows that young people care about their health and future.     2     We will educate them about the bad physical effects of smoking and how smoking affects those people around them.     3    我们将解释不吸烟的所有好处, such as saving money which can then be spent on other things. Our interviews also indicate that young people are concerned about what is cool and what their friends like.     4     We will show how smoking is not cool or attractive, because it makes people smell terrible, and gives them bad teeth, skin and fingernails. If we can convince young people not to start,     5     they might then urge their parents and other people to give up smoking, too.

Man has been interested in robots and     1     robots exist for quite some time. Scientists are always inventing new and better robots, which will play an important role in our future lives.

First,     2     smart robots will help us with the housework. They will take over jobs such as preparing meals, washing dishes, and sweeping the floor, so that we will have more free time to have fun.

Second, robots will help us with our work.     3     They will help us to do all the heavy and dangerous work, and help out in hospitals, schools and offices.

Third,     4    机器人将是我们的朋友. Whenever we feel sad, lonely or upset, we can have a chat with a robot. Robots will not only be good listeners but also     5     会给我们提供建议.

In conclusion, robots will be more and more intelligent and will benefit us in many ways.