层次模型不能直接表示多对多联系，为什么可采用哪些方法进行多对多联系的表示。
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What does the man prefer to do on weekend nights
A. Lawyer and client.
B. Teacher and student.
C. Mechanic and customer.
D. Salesman and customer,
What does the man prefer to do on weekend nights
A. Stay at home.
B. Listen to music at a bar.
C. See movies with friends.
D. Go to restaurants.
What does the man like
A. The woman complains about the program.
B. The woman doesn’t want to change the channel.
C. The woman gives a piece of advice to the man.
D. The woman expresses agreement with the man.
在考生文件夹下存在一个数据库文件samp3.mdb，里面已经设计好窗体对象fStaff。试在此基础上按照以下要求补充窗体设计。 将窗体标题设置为“员工信息输出”。
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