单项选择题 与长期债券相比，人们更偏好短期债券，这是因为（）

未知题型 Self-motivation is basically the ability to get yourself to take action whether you feel like it or not. Many people have a【B1】______when it comes to motivation in general. It can【B2】______being lazy or unproductive, but in actuality, no one is really lazy. If you are not capable of getting yourself to do certain things that you know you should be doing, its because you dont have a strong enough reason to do it. What can you do to help【B3】______your self-motivation? One thing you can do is start giving yourself stronger reasons to be performing certain things such as【B4】______your goals. Once you have a goal and strong enough reasons to take action, your self-motivation will automatically start to increase. Your reasons can be both positive and【B5】______. You can either do something because you want to get【B6】______out of completing a task or you want to avoid the【B7】______of not completing the task. Either way, the reasons need to be strong enough to move you into action. The bottom line is that if you want to increase your self-motivation, you will need to start designing a more compelling future for yourself.【B8】______powerful reasons why you should take action. When you have a strong purpose and【B9】______feed your mind with self-improvement motivation material, you will start to become more and more【B10】______and will begin to take more action.【B1】

未知题型 听力原文： When I was six, Dad brought home a dog one day, who was called 'Brownie'. My brothers and I all loved Brownie and did different things with her. One of us would walk her, another would feed her, then there were baths, playing catch and many other games. Brownie, in return, loved each and every one of us. One thing that most touched my heart was that she would go to whoever was sick and just be with them. We always felt better when she was around. One day, as I was getting her food, she chewed up one of Dads shoes, which had to be thrown away in the end. I knew Dad would be mad and I had to let her know what she did was wrong. When I looked at her and said 'Bad girl', she looked down at the ground and then went and hid. I saw a tear in her eyes. Brownie turned out to be more than just our family pet. She went everywhere with us. People would stop and ask if they could pet her. Of course shed let anyone pet her. She was just the most lovable dog. There were many times when wed be out walking and a small child would come over and pull on her hair. She never barked or tried to get away. The funny thing is she would smile. This frightened people because they thought she was showing her teeth. Far from the truth, she loved everyone. Now many years have passed since Brownie died of old age. I still miss the days when she was with us. Questions 16 to 18 are based on the passage you have just heard. 16. What would Brownie do when someone was ill in the family? 17. What do we learn about Brownie from the passage? 18. Why does the speaker say that Brownie was more than just a family pet?17．A．She disliked the speaker's dad.B．She felt scary for her mistake.C．She loved playing hide-and-seek.D．She would eat anything when hungry.