5.阅读

Title: ambiguity effect

Definition: ambiguity effect is a tendency that people prefer the well-known choice even if its chances of winning are small. Because the choice that has little information about its risks prevents people from choosing it.

听力

The professor gives an example of his own. When he was young, he had a chance to take part in a tennis competition. But he didn’t know which one to sign up for. One was in the town he lived in while the other is unknown to him. As he knew there are many excellent players in his town, it may not be so easy for him to stand out in the game. But he had few ideas of what level the players in the other town was like. Finally, he chose to compete in his own town but didn’t win any awards and he felt a little bit regretful.

6.阅读

Title： Life Stage of Animal Migration

定义 : In different life stages, some amma1 need to migrate to various places to live because of the deity and safety when they are young. they may be safe and have enough food in the original place。 However if they grow older the original place may have threads from the predators and the food may be insufficient