法律关系是由（）三要素构成的，任何法律关系都必须具备这三要素。
A.行为
B.主体
C.客体
D.内容
E.责任
参考答案：B, C, D
用所给单词的适当形式完成短文。
Yesterday Grandma 1._____ (cook) fish Amy 2._____ (help) her mother. Grandp3._____ (walk) in
the park. Sam 4._____ (play) on the computer. Tom 5._____ (play) with his toys. Their father 6._____
(watch) TV. They 7._____ (be) very happy.
影响磁盘存储容量的因素是______。
A．磁道数目 B．扇区数C．所用的磁面个数 D．以上都是
