Phương pháp học tiếng Anh hiệu quả, nhanh chóng: Các chương trình học tiếng Anh của Ban Việt ngữ VOA (VOA Learning English for Vietnamese) có thể giúp các bạn cải tiến kỹ năng nghe, hiểu rõ cấu trúc và ngữ pháp, và sử dụng Anh ngữ một cách chính xác.
Học tiếng Anh: http://www.facebook.com/Words.and.Idioms hiệu quả, nhanh chóng. Các chương trình của VOA Learning English for Vietnamese (http://www.voatiengviet.com/section/hoc-tieng-anh/2693.html) có thể giúp các bạn cải tiến kỹ năng nghe, hiểu rõ cấu trúc và ngữ pháp, và sử dụng Anh ngữ một cách chính xác.
Health: Luyện nghe nói tiếng Anh qua video: Chương trình học tiếng Anh của VOA: Special English Health Report. Xin hãy vào http://www.voatiengviet.com/section/hoc-tieng-anh/2693.html để xem các bài kế tiếp.
Electronic cigarettes have been advertised as a safer choice for smokers than tobacco. E-cigarettes contain the drug nicotine, just like traditional cigarettes. But they do not use tobacco. And you do not light them. They operate on battery power. Recently, poison control centers across the United States have reported an increase in telephone calls about e-cigarette poisoning. Most of the phone calls are from people worried about children who played with the devices. The Centers for Disease Control and Prevention says it received 215 calls about e-cigarette concerns last February. More than half were about children ages five and younger. The devices apparently had made them sick. Tim McAfee is director of the CDC’s Office on Smoking and Health. He says the federal government does not control e-cigarettes. Yet he confirms they contain liquid nicotine, a well-known danger. Mr. McAfee adds that the most common way an individual gets poisoned by nicotine is when it gets onto the skin, in their eyes or is swallowed. Even a small amount, he says, can make a person sick. Nicotine poisoning can cause stomach pain and a feeling of unbalance. Headaches and seizures are also signs of nicotine poisoning. Too much nicotine can kill. E-cigarettes do not contain hundreds of harmful chemicals found in cigarettes. So, the U.S. Surgeon General has suggested that e-cigarettes may be a useful tool for adults trying to end their tobacco dependency. But Tim McAfee worries that young people may think electronic cigarettes are harmless. They could become addicted and then start smoking real cigarettes.
