单选题 In a certain game, a large container is filled with red, yellow, green and blue beads worth, respectively, 7, 5, 3, and 2 points each. A number of beads are then removed from the container. If the product of the point values of the removed beads is 147,000, how many red beads were removed?
【正确答案】 D
【答案解析】[解析] 做对该题的关键在对题意的正确理解。根据题意可知，只要147,000能被红色珠子的点值7除尽，则移出的珠子中一定有红色珠子，且147,000能被7整除多少次，移出的珠子中就有多少个红色的珠子。因此考生只需把147,000分解成7，5，3和2相乘的形式就可以了：
147000=7 2 ·5 3 ·3 1 ·2 3
因此移出的珠子中红色、黄色、绿色和蓝色珠子分别为2.3，1和3个。