导游人员引导游客观景赏美的基本方法有()。
A.统筹动态欣赏和静态欣赏
B.调节观赏的距离和角度
C.适应观赏习惯
D.扣住观赏时机
E.把握观赏节奏
参考答案:A, B, D, E
为了控制用户程序不能执行特权指令是通过设置PSW中的一个状态位来标志,这一位是 ______。
A.保护位
B.CPU状态位
C.屏蔽位
D.条件位
句型转换。
1. I watch TV every evening. (用过去时改写)
I ________ TV yesterday evening.
2. It was a fine day yesterday. (对划线部分提问)
________ the ________ yesterday?
3. He did his homework last night. (改为否定句)
He ________ his homework last night.
4. I was in the supermarket yesterday afternoon. (对划线部分提问)
________ you yesterday afternoon?
5. I saw some seals. (改为一般疑问句)
________ you ________ seals?