areas of countryside，but also tons of water.Besides，all sorts of chemicals and huge amounts of energy are used to keep its courses(球场)in good condition.This causes major environmental effects.For example，in the dry regions of Portugal and Spain，golf is often held responsible for serious water shortage in some local areas.

　　There are many environment­friendly sports.Power walking is one of them that you could take up today.You don't need any special equipment except a good pair of shoes; and you don't have to worry about resources and your purse.Simple and free，power walking can also keep you fit.If you walk regularly，it will be good for your heart and bones.Experts say that 20 minutes of power walking daily can make you feel less anxious，sleep well and have better weight control.

　　Whatever sport you take up，you can make it greener by using environment­friendly equipment and buying products made from recycled materials.But the final goal should be "green gyms"．They are better replacements for traditional health clubs and modern sports centers.Members of green gyms play sports outdoors，in the countryside or other open spaces.There is no special requirement for you to start your membership.And best of all，it's free.

　　【语篇解读】　本文属于说明文。文章介绍了不同的运动对于环境的影响不一样，并且呼吁人们从事绿色运动。

　　4．Which of the following does the author most probably support?

　　A．Cycling around a lake.

　　B．Motor racing in the desert.

　　C．Playing basketball in a gym.

　　D．Swimming in a sports center.

　　A　[推理判断题。根据最后一段中的"Members of green gyms play sports outdoors，in the countryside or other open spaces.There is no special requirement for you to start your membership.And best of all，it's free."可以得出沿湖骑车是最绿色的，因为免费，不需要耗费太多的资源，故选A。]

　　5．What do we know about golf from the passage?

A．It is popular in Portugal and Spain.