There are many good things about the Internet. However, chatting is not without its dangers. It is easy to fool people when they cannot see you, so one should use caution when meeting a chat friend. Also, the virtual world of the Internet can be so intoxicating that some people actually become addicted. These people spend so much time on the Internet that their virtual lives become more important to them than their real lives. Clearly, this is not very healthy. Therefore, when using the Internet, be sure to do it in moderation.
　　网络有很多好处，不过网上聊天并不是没有危险的。由于看不见对方，要骗人是很容易的。所以，网上交友必须非常谨慎。另外，网上的虚拟世界让人陶醉，以至于有些人会因此沉迷其中而无法自拔。这些人花太多时间上网了，对他们而言，虚拟世界变得比真实世界还要重要。很显然，这不很健康。所以在上网时，还是要有所节制才好。

　　Patients and medical practitioners alike have long believed in the healing power of humor. It is claimed that humor not only affects patients' moods, but can actually help them recover faster. Several studies, as well as a lot of anecdotal evidence, seem to support this. Patients in better spirits are known to have higher immune cell counts. Some have even claimed to have healed themselves of serious illnesses by reading comics and watching comedies.
　　长期以来，病人和医生都相信幽默能治病。有人宣称，幽默不仅能影响病人的情绪，还能使他们早日康复。好几项研究和很多奇闻轶事的证据似乎都能证明这一点。情绪比较好的病人，免疫细胞计数比较高。有一些人甚至宣称通过看漫画和喜剧治好了自己的重病。

　　Despite all this, many researchers are not convinced. They point to the fact that many afflictions have been known to disappear spontaneously, with or without a daily dose of laughter. They also say that while optimism in general does seem to be related to better health, it is hard to tell which comes first.
　　尽管如此，许多研究人员并没有被说服。他们指出，事实上不论病人是否接受日剂量的笑疗，很多苦恼都会自动消失。他们也表示，虽然一般看来乐观的心态确实与健康有联系，但是很难确定这两者哪个在先。