ing-bottom: 66.67%;">Nowadays, pets become so close and friendly to our human-beings that more and more people enjoy keeping them. Pets can bring them a lot of joys and happiness, because playing with pets is a good way to communicate with the nature. Besides, pets can comfort old people who live alone. With the companion of pets, they won’t feel lonely. Nevertheless, I’m not interested in keeping pets at all. For one thing, keeping pets is bad for environmental protection, since pets usually make a lot of noise and contaminate the roads. For another, the virus carried by pets may cause fatal disease. What’s more, sometimes pets may attack people when they are unhappy. Consequently, we had better not keep too many pets, so as to ensure our health and security. Besides, those pet lovers must take some effective measures to prevent their pets from hurting people and polluting our environment. 如今，寵物跟人類的關係都很親密和友好，越來越多的人也喜歡養寵物。寵物可以給他們帶來很多快樂和幸福，因爲和寵物玩耍是一種與大自然交流的好方法。此外，寵物可以安慰獨居老人。有寵物的陪伴，他們不會感到孤獨。然而，我對養寵物一點也不感興趣。一方面，養寵物不利於環境保護，因爲寵物通常會製造很多噪音，污染道路。另一方面，寵物攜帶的病毒可能會導致致命的疾病。更重要的是，有時寵物心情不好的時候可能會攻擊人類。因此，我們最好不要養太多的寵物，確保我們的健康和安全。此外，那些寵物愛好者必須採取一些有效的措施來防止他們的寵物傷害人類和污染我們的環境。
