直角都一样大。[ ]
正确
.
.She asked Mary_________her homework.
A.if she had finished
B.that whether she had finished
C.that if she has finished
D.whether she has finished
在学生的学习活动中居支配地位,发挥主导性作用的动机是()。
A.主导性动机
B.交往性动机
C.威信性动机
D.辅助性动机