影响画面内物体运动状态的几个因素有().
A.光学镜头的选择
B.景别的选择
C.拍摄方向的变化
D.摄像机的移动与变焦头的使用
参考答案:A, B, C, D
按要求改写句子。
1. They can play tennis at 4:00 pm. (对画线部分提问)
_____ _____ _____ they play tennis?
2. Why don't you go fishing with me? (改为同义句)
_____ _____ ______ fishing with me?
3. He is studying for a math test. (对画线部分提问)
_____ _____ he _____ _____?
4. It takes me half an hour to get there. (同上)
_____ _____ does it ____ _____ you to get there?
5. She can come to my party this evening. (改为否定句)
She _____ _____ to my party this evening.
下列变化中一定有化学变化发生的是( )
A.用花生榨油
B.磨制石器
C.用麻织布
D.烧制陶器