题目内容
随着网络的发展，目前很多人给亲朋好友发电子贺卡。请根据以下提示，阐述电子贺卡的优越性。
1．可播放动画和声音；
2．传递速度快，节省钱；
3．形式多样，可从网站下载，可自行设计；
4．有利于环境保护。
注意：文章须包括以上要点，可适当发挥，不要逐条翻译；
词数：100左右。
参考词汇：电子贺卡：electronic card；网站：web site
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With the development of the Internet, more and more people tend to send electronic cards instead of paper ones at festivals’ time. Compared with the traditional ones, electronic cards are more interesting and lively, for you can get not only pictures but also sound. Besides, it’s faster to send an electronic card and it can save money. There are many web sites on line where different varieties of cards are available. If none of these cards are of any interest to you, you can design cards of special style. More importantly, with the popularity of electronic cards, less paper is used for making paper cards, which contributes to the environment protection.
