外向型总的特点是（）过程经常指向（）。
A.心理活动
B.外在事物
参考答案：A, B
They are living with their parents for the moment because their own house ____.
A．is being rebuilt
B．has been rebuilt
C．is rebuilt
D．has rebuilt
在Excel2003中，可以预先设置某一个单元格允许输入的数据类型
