Authorware中的导航图标的目标位置一定要附属于一个下面哪一个图标？（）
A、组图标
B、分支图标
C、交互图标
D、框架图标
参考答案：D
In a __________ state, the children had a meeting and decided to choose one person to ask for more food.
A．pleased
B．desperate
C．astonished
D．easy
预防子宫内膜异位症的措施包括______、______、______。
