Biological studies have found that most of the ants in the swarm are very hardworking, looking for and carrying food scrambled, while a few ants look away. When the food source is cut off or the ant nest is destroyed, those industrious ants are helpless. The ant "comes forward" and leads its partners to the new food source it has already detected. This is the so-called lazy ant effect. According to the above definitions, Which of the following are the lazy ant effects:. ['Communications engineers are well paid, working hours are free, and they are good at solving technical problems.', 'In the financial crisis, a foreign trade company has overcome difficulties by means of diversified operations.', 'An automobile company encourages employee innovation and allows employees to delve into technology during work hours.', 'A manager employs eclecticism and values tenacity and integrity, not academic background.']