【答案解析】The characteristic of bridge game is to have close cooperation with his associate and to compete with the alliance made by another two players intellectually and bravely in order to win. However, mahjong is a game that needs one player alone to fight against the other players, guarding against they should win. And if he cannot win the game, his best option is to frustrate the winning chance of the others. Such behavior is apparently not good for scientific research, especially if he can not make achievement, others will be prevented from doing, either. More seriously, it influences the development of scientific career. Team spirit is necessary to any collective endeavor.