阅读下列短文，从每题所给的四个选项（A、B、C和D）中选出最佳选项。

    Jogging is good for us and helps us live longer and healthier. It's easy to do and free. You do not have to spend money jogging. You can do it in a park or even in your home. But many people find it boring after jogging for a while. Then how can we keep jogging fun? Here are some ideas to make your jogging more interesting.

    First, you should choose to wear your favourite sports clothes and shoes when you jog. They make you more comfortable and more likely to run.

    Always jog outdoors. By changing your route, you can choose another street, and you will always have something interesting to enjoy when you jog.

Take along with your MP3 player and listen to your favourite songs when you jog. The music can make you excited and run farther without feeling bored.

    It's always more enjoyable with a friend. Make friends while jogging. Join a running club, find a new running partner, or invite an old friend to go jogging. It's better to find a friend who runs a little faster than you. Then you can try to catch up with him or her.

A

    What is a Chinatown? Is it a town in China? Of course not! It is in a foreign(外国的) country. It is a place where many overseas(海外的) Chinese live together.

    There are lots of Chinatowns in America. The biggest one is in New York. There are about 150,000 people in it. It is the home of Chinese New Yorkers. And it is also a good place to go.

    Shopping in Chinatown

    Shopping in Chinatown is fun. You can find lots of things there. Most of them are made in China. Mott Street is the best place to shop because the things there are very cheap.

    Eating in Chinatown

    Chinatown has more than 200 restaurants. You can enjoy traditional (传统的) Chinese food there. New Silver Palace Restaurant is one of the best restaurants. Why don't you have breakfast with a cup of green tea in it? You can eat some Shanghai food in Evergreen Restaurant.

    Living in Chinatown

    Living in Chinatown is comfortable. You can find hospitals, schools, banks, libraries and supermarkets in it. In some schools, students must study Chinese. Many overseas Chinese send their children to these schools. They want their children to learn more about China and its culture(文化).

    After years of research and testing, the hybrid car was developed and put on the market. It's an interesting and exciting new improvement in today's world as we look for better ways to protect the quality of the air we breathe and save our natural resources.

    The quality of our air is affected by many different things. But one of the largest sources of air pollution is the burning of fossil fuels such as coal and gasoline which is used to power a car's engine. The EPA has set national standards to help control the level of harmful pollutants sent off into the air, and the automobile industry has acted by producing a hybrid car that uses less gas and therefore causes less pollution.

    A hybrid car is a combination of a regular car that runs on gasoline and an electric car that is battery powered. Some people tend to think that since the hybrid car is partially electric, you have to plug it in to charge it. But that's not how it works. The 144 volt battery pack is actually recharged through the energy that is produced when the car's brakes are used. This is referred to as "regenerative braking", because it produces electricity.

    Although the hybrid car still runs on gasoline most of the time, this helps it use less gas than a regular car. When the driver stops at a traffic light, the engine automatically shuts off to save fuel. Then, as soon as the driver puts the car in gear and touches the gas pedal, the engine starts back up.

    Have you ever ridden in a car with someone who ran out of gas? That probably wouldn't happen if you were riding in a hybrid car. It flashes a warning on its computer screen that says, "I am low on gas". When it completely runs out, the warning reads, "YOU ARE NOW OUT OF GAS!" Then the electric power supply kicks in to let the driver travel a few more miles to a gas station.

    Have you seen Avatar(《阿凡达》)? It's a popular3Dflm, and you may have to wear 3D glasses to see it. The 3D glasses make the images(图像) from the film look as if they are coming straight towards you.

    More and more 3D films are coming to theatres. Some say that 3D TV sets will come into our homes in the near future. 3D technology can make TV and films more exciting. However, people with eye problems may get headaches if they spend too much time watching 3D films. Why?

    When we look at an object(物体), each eye sees it at a different angle. Our eyes send the two images to our brain(大脑), and the brain puts them together. 3D technology uses two film projectors(投影机). One projects a left—eye image and the other projects a right—eye image. 3D glasses allow us to see a different image in each eye. So, when we are watching a 3D film, our brain can't put together the images. The brain needs to work harder at reading "the images. That makes it easier for people with eye problems to get dizzy(头晕的) or have headaches. A famous eye doctor said if your eyes can't focus(聚焦)on the same object at once, you will have trouble watching 3D films.

    Which animal do you think is "the king of the animals", the elephant, the lion or the tiger? They are all large and strong. But I think the tiger is "the king of the animals". If you watch carefully, you can find some black lines on the tiger's forehead(前额). The lines look like the Chinese word "WANG". The word means "the king of the world" in Chinese.

    Most of the tigers come from China and India. Tigers are dangerous animals. They look scary(吓人的). They like eating meat. They have yellow fur with black lines. They usually weigh about 200 to 300kg. Tigers can run fast. They run at a speed of 20 meters per second.

    Some people think they are dangerous. But they don't know tigers are in danger now. There are only 20 to 30 wild South China Tigers in China and less than 300 in the world. Lots of people kill them for their fur. We should take action to protect them.

Canada Day

Since 1982, July 1st has been officially known as Canada Day. Canadians of all ages take part in this festival across the country.

Canada Day is the year's biggest national party. In many towns and cities, the government organizes a lot of events, often outdoors. These include parades (游行) , concerts, festivals, firework displays and ceremonies for new Canadian citizens (公民) .The celebrations often have a patriotic mood. Canada's national flag, a symbol for Canada Day, can be seen everywhere and a lot of people paint their faces red and white, which are Canada's national colors. The celebrations in Ottawa, Canada's capital city, are especially grand and exciting.

In the province of Quebec, many home rentals (租赁) start on July 1st and last for exactly one year, and many people in Quebec spend Canada Day moving from one house to another. So in Quebec, Canada Day is also known as Moving Day.

Many organizations, businesses and stores are closed this day. Only some bookstores, hospitals and gas stations may be open. Post offices are closed, too. As Canada Day falls in the Canadian summer holiday period, all schools are closed as well. In some areas, special services are provided for large events. The concerts, parades and festivals may cause some traffic jams.