小题1:B
小题2:C
小题3:A
小题4:D
文章介绍了网络交友方面的问题，并提出了安全方面的建议。
小题1:B 细节题。根据第二段3,4行Many singles say the regular dating scene has just led them from one bad experience to another and are ready to try something else.说明他们在正常的约会中经历了很多糟糕的情况，带来了很多烦恼，故B正确。
小题2:C 猜测词义题。根据Singles are flocking（涌向）to the Internet mainly because their busy lifestyles leave them little time to look for a significant other.说明他们是在寻找他们的另一半，即结婚对象。故C正确。
小题3:A 推理题。根据文章倒数2,3行Meet in a safe place. When meeting someone in person, choose a public location with other people around.说明要在公开的地方见这样在网上遇见的人，A很明显不是公开的场所，故A符合题目要求。
小题4:D 推断题。根据文章第四段Online dating experts recommend following a few safety tips和文章最后一行Following these tips and you might be able to find the person of your dreams.说明遵守这些安全方面的建议会让你有安全的体验。