During the introduction phase of product life cycle, profits tend to be small and even losses may occur, because the sales volume at this stage is usually small.
【简答题】One summer evening I was sitting by the open window, reading a good science fiction story. I was so(1)in the story that I was not (2 ) that it was getting dark. When I realized it was too (3 ) to read...
【简答题】Confessions of an Internet Addict 1 My addiction to the Internet is causing several problems in my life. 2 The first issue is my expanding waistline. 3 I used to enjoy exercising and playing tennis fo...