单词拼写。

1. It was dark and he has completely lost his s______ of direction.

2. She gets c______ when her husband goes out drinking.

3. "Every dog has his day." is a s______, meaning that everyone gets his chances of doing well.

4. Breakfast is s______ until 9 am in our restaurant.

5. Let's give three c______ for our team--- they've won!

在教学中不断变换同类事物的非本质属性，以便突出本质属性的方法称为（）。

A.变化

B.改变

C.变式

D.突出