Directions: Read the following passage. Answer the questions according to the information given in the passage and the required words limit.（6 points）
Write your answers on your answer sheet.
As we rush through our busy days accomplishing our tasks-work，kids，shopping，cleaning, eating and so on，we often complain that we don’t feel good．There is a simple，quick，and effective way that you can feel better throughout the day and also be more attractive.
All you have to do is smile more．
Smiling changes your attitude，whether you realize it or not．If you have any doubts，next time you feel down，start smiling and thinking positive thoughts and see what happens．You can’t help but have a better attitude when you smile．
Smiling also raises your confidence．
Smiling affects your emotions because of a brain-body connection．It triggers scientifically measurable activity in the left，frontal cortex-the area of the brain where happiness is registered．
Your face has 44 muscles between the skin，cartilage（软骨），blood and bone that you contort（扭曲）, flex, and move．This lets you make over 5000 different types of expressions．That’s a lot of expressions! And each will have a different effect on your feelings and those looking at you.
Now that you know how good smiling is for you，make a conscious effort to use this smile exercise a minimum of six times throughout your day．When you smile，remember to breathe in through your nose and think positive thoughts．This I guarantee will have a positive influence on your day and in your life．So smile!
76．How can you feel good and be more attractive according to this passage?（within 2 words．）
_______________________________________________________________________________77．Why can we make more than 5，000 different types of expressions?（within 19 words．）
_______________________________________________________________________________78．What are the benefits of smiling?（within 12 words．）
，它的街道和运河都十分宽阔，还有许多广场或集市，……这些广场的位置十分利于交易，每个市场在一星期的三天中，都有四、五万人来赶集。所有你能想到的商品，在市场上都有销售。……每一方形市场的对面有两个大公署，署内驻有大汗任命的官吏，负责解决外商与本地居民间所发生的各种争执，并且监视附近各桥梁的守卫是否尽忠职守，如有失职，则严惩不怠。