Abstract: We have heard so many touching love stories, such as Liang Shanbo and Zhu Yingtai, Bai Suzhen and Xu Xian, Romio and ...
Abstract: This vedio holds an investigation of HIV effects towards common people and their families from the aspects of differe...
Abstract: Some say that love's a little boy. And some say it's a bird. Some say it makes the world go round. Some say that's a...
Abstract: During the course of evolution, the human immune system has developed into a powerful, defensive mechanism against ba...
Abstract: In history, epidemic disease has always been playing the role of a merciless killer. Large numbers of people die of e...
Abstract: Human bodies have different sizes and shapes. We are all unique. Our attitudes towards ourselves are largely determin...
Abstract: There are heaps of different styles of vegetarian eating. The most common is Lacto-ovo. That's when you don't eat any...
Abstract: To “see and be seen” plays an important role in our lives. When we develop problems with our eyes, our li...
Abstract: Food is crucial to human's life. It provides energy to our brain, makes us grow and helps us be adapted to the nature...
Abstract: Our bodies need a variety of nutrients in order to function properly. Our most basic requirement is water, which make...
Abstract: Scientists were always trying producing safe contraceptives. The German chemist Adolf Butenandt became one of the fir...