假如你是李华，来自苏州市第一中学,你将参加 以‘绿色出行’ 为主题的英语演讲比赛,请撰写一份演讲稿。

   要点如下：

   1.介绍目前本市汽车增长带来的空气污染和交通堵塞等现象。

   2.号召大家‘绿色出行’。
     内容包括：  
     (1)如非必要，少坐私家车；

     (2)鼓励选用公共交通,如乘公交车或坐轻轨、地铁；

     (3)短途尽量步行，或骑自行车。

   3．阐述‘绿色出行’的好处：节能环保，改善城市交通状况，锻炼身体，有利健康。
   注意：1．词数90左右。短文的开头已为你写好，不计入总词数；
       　  2．参考词汇：绿色出行：Green Travel；交通堵塞：traffic jams; 提倡:promote
        　     3．短文须包括所有的要点，不要逐词翻译，可适当发挥,使短文连贯、通顺，文中不得出现真实的人名、校名等相关的信息。

The increase of private cars has brought  more and more serious air pollution and traffic jams in our city, especially in the rush hour.

So I think it’s time to promote the green travel at present. In my opinion, first, we’d better not travel by car unless it’s necessary. Second, people should be encouraged to choose the public transport. They can take a bus or the light rail. They can even go by underground. These ways of travel can save energy and reduce air pollution .They can also improve the traffic conditi. Third, we should choose to walk or ride a bicycle if we don’t go far away. Travelling on foot or by bike provide us with a chance to make us stronger and healthier.

      In a word , I believe that we can improve the environment as well as our traffic conditi if we all choose the green travel.