单项选择题 听力原文： With the development of science and technology, people have more spare time. But how do we spend the free time? I prefer to go outdoors and spend my free time in some different places and with some different people. The first reason for outdoor activities is that I have spent too much time indoors. Most of the time I sit in the classroom, listening to the teachers and doing my exercises. The indoor activities are too limited. Fresh air, sunlight and enough physical exercises are needed for a healthy body. So when I am free, I should go out. The second reason is that I want to have more experiences in my life. When you go out, far away from your daily life, you will meet a lot of people who are quite different from you. It will give you a lot of exciting experiences. However, outdoor activities will take a lot of money and energy. So if you have not prepared enough, having some amusement indoors is also a good choice, which may be much cheaper and easier to carry out. Reading books and enjoying music are also very good.What does the speaker prefer to do to spend the spare time?A．Stay at home.B．Go outdoors.C．Watch TV.

单项选择题 下列数据模型中，数据独立性最高的是(43)，当前应用最广泛的数据模型是(44)。

单项选择题 下列不属于信息管理部门工作任务的是（）。