best of all，it's free．

1. Which of the following is the author most probably in favor of？ ______

　A. Cycling around a lake．

　B. Motor racing in the desert．

　C. Playing basketball in a gym

　D. Swimming in a sports center．

2.What do we know about golf from the passage？ ______

　A. It is popular in Portugal and Spain．

　B. It causes water shortages around the world．

　C. It pollutes the earth with chemicals and wastes．

　D. It needs water and electricity to keep its courses green．

3. The author uses power walking as an example mainly because ______ ．

　A. it is an outdoor sport

　B. it improves our health

　C. it uses fewer resources

　D. it is recommended by experts

4. The author writes the passage to ______ ．

　A. show us the function of major sports

　B. encourage us to go in for green sports

　C. discuss the major influence of popular sports

　D. introduce different types of environment-friendly sports

　　When was the last time someone unexpectedly did something nice for you？ Not someone you knew， but a total stranger？ It's happened to me a few times， but two instances really stand out．

A few years ago， I was dining in a restaurant with a friend who kept talking about himself， completely not aware of the fact that I was sitting there in misery． It wasn't my friend's talks that made me suffer． I was recovering from a broken heart， and just sitting down to dinner reminded me of my last relationship． I could have