It was our family day today, and my grandparents came to our home as usual. In my family, the second Sunday of every month is our union day. Dad would go to Florida to pick up grandparents to our home, and my grandparents would stay with us for nearly a week. My parents want them to move here...

  I should sit in front of the computer for seven hours at least, with a whole day work; I am tired of doing anything else, besides, my eyes can not bear the radiation of computer for a long time. To protect my eyes, I decide to buy a pair of safety glasses against radiation. My colleagues...

  Modern clock is the crystallization of precision mechanics industry and microelectronic industry. Today, only watch bands in the world have 1000 kinds at least. According to their quality and prices, watches can be divided into three categories: high, medium and low, which are really famous...