A kind of little cars may take the place of today's big ones many years later. If everyone drives such cars in the future, there will be less pollution in the air. There will also be more space for parking in cities, and the streets will be less crowded.
      The little cars of the future will cost less. Driving will be safer, too, since these little cars can go only 65 kilometers an hour. The cars of the future will be fine for going around a city, but they will not be useful for a long way. Little cars will go 450 kilometers before they need to stop for more gasoline (汽油). If big cars are still used with the small ones, two kinds of roads will be needed in the future. Some roads will be needed for the big, faster cars and other roads will be needed for the small, slower ones.

    Different weather makes people feel different. It influences health, intelligence（智力）and feelings.

    In August, it is very hot and wet in the southern part of the United States. People there have heart trouble and other kinds of health problems during this month. In the Northeast and the Middle West, it is very hot at some times and very cold at other times. People in these states（州）have more heart trouble after the weather changes in February or March.

    The weather can also influence intelligence. For example, in a 1983 report by scientists, IQ（智商） of a group of students was very high when a very strong wind came, but after the strong wind, their IQ was 10%lower.The wind can help people have more intelligence. Very hot weather, on the other hand, can make it lower. Students in many schools of the United States often get worse on exams in the hot months of the year（July and August）.

    Weather also has a strong influence on people's feelings. Winter may be a bad time for thin people. They usually feel cold during these months. They might feel unhappy during cold weather. But fat people may have a hard time in hot summer. At about 18℃, people become stronger.

    Low air pressure（气压） may make people forgetful（健忘）. People leave more bags on buses and in shops on low-pressure days. People feel best at a temperature of about 18℃.

Are you feeling sad, tired, forgetful, or unhappy today? It may be the weather's problem.

You can learn a lot in a club. After you join a club, you can know how to play basketball, how to cook or how to speak English. These new things make you better. Also, good chances like a basketball match, a music festival or an English show, are easy to get when you are in a club. 

In a club, you can meet new people and make friends with them. Then, you can play games and have a great time with them. They can be your teachers too, and you can get new things from them. 

At last, joining a club makes you busy. You always have things to do, so your life will be quite interesting. 

Do you have unhappy feelings in your life? Do you feel upset after you argue with a friend? How do you solve these problems? The following ways may help you.

Write down your feelings. You can use a diary and write down your feelings when you are sad. Some people often hide their feelings and ideas after terrible events. As time goes by, they may have strong pressure. Keeping a diary is a good way to help you because the diary is like your good friend. It will listen to you and help you get better.

____ When you feel sad, you can try doing some relaxing things. For example, it's a good idea to watch a funny movie or read an interesting book. It is also helpful to go for a walk or ride a bike with your friends in the park. These activities can help you get out of your unhappy feelings. 

Have a cry (哭). You may feel like crying when you are really sad. In fact, sometimes crying is a useful way to help you get out of your sadness (悲伤). After crying, you may feel better to move on.

Many people like to take a trip by plane，but I don't like it because an airport （机场） is usually far from the city. You have to get there early and wait for hours for the plane to take off （起飞） and it's often late. You can't open the windows. You can't choose the food. Planes are fast，but it still takes you hours to go out of the airport and into the city. 

I like traveling by train. I think trains are safe. The stations are usually in cities. When you are late for a train，you can catch another one. You can walk around in the train and open the windows. You can see many interesting things on your way. I know it takes a little more time. 

I also like cars. You can start your trip when you want to，and you don't need to get to a railway station or a bus stop. Also you can carry many things with you in a car. But sometimes there are too many cars on the road. 

Do you get in trouble for feeding your dog on food from dinner under the table? A new study suggests that by sharing "people food"，you might actually be helping to keep your pet healthy. 

Many dogs are fed dry processed food. Science has shown that a diet(饮食)of processed food is not healthy for humans. Scientists from the University of Helsinki, in Fin-land, say this diet is not good for our pet dogs, either. 

The scientists discovered that the food a dog might find in an owner's home such as eggs, fish, meat and vegetables may be better than a diet of just dog food. This is be-cause having different kinds of food leads to more variety （多样性）in microbes, which are little living things, too small to be seen with our eyes. There are millions of them in human and animal bodies. Some are bad for us, but many are good for us, and they play important roles in helping us digest（消化) food. 

A total of 8, 500 young pet dogs took part in the study. 4, 500 of them were under 6monthsold, and the rest were between 6 and 18 months old. The owners were asked about what food they had fed their pets and how often When the dogs reached adult-hood, their owners reported that about 20%of the dogs showed CE symptoms（慢性肠胃不适症状）such as weight loss. However, if dogs had been fed a mixed diet while young, . it was 22%less possible for them to experience CE symptoms later in life. 

Dr. Anna Helm-Bjorkman told The Times of London, "Dog food on sale are described as providing a complete diet. . But what we show is that variety is important. No-body would give 12 years of the same food to a child-why should a dog be different?"