Recently ,some new public-sharing bicycles are used in many big cities. They are called Mo bikes. The Mo bikes is light with use of solar energy(能源). Also , its users do not need to go to a special parking lot to pick up a bike or return it. The Mo bike was used in Shanghai...
Since the 1970s many new applications of the computer 40 (find) in communication, finance, trade and many other areas. The computer has become a devoted friend and helper of the human race. 查看习题详情和答案>> __46 People use money to buy food, furniture,books,bicycles and hundreds of ...
Find new & used sports & recreation equipment and items for sale. Shop the best selection of sports equipment, gear, accessories and more including hockey, hunting, bicycles, skating, snowboarding, fishing, hunting and more.
Salt may seem rather a strange 【B1】 to use as money, 【B2】 in countries where the food of the people is mainly vegetable, it is often an 【B3】 necessity. Cakes of salt, stamped to show their 【B4】 , were used as money in some countries until recent 【B5】 and cakes of salt...