下列实验事实不能用平衡移动原理解释的是
A.
将NO2球浸泡在冷水和热水中
B.
C.
D.
Encourage your children to try new things, but try not to ___ them too hard.
The computer was used in teaching. As a result, not only__________, but students became more interested in the lessons.
The children all turned ____ the famous actress as she entered the classroom.
Edward, you play so well. But I ______ you played the piano.
She brought with her three friends, none of ______ I had ever met before.